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Version 337.1 by Mengting Qiu on 2025/02/10 15:35
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1 (% style="text-align:center" %)
2 [[image:image-20230717152014-10.png||_mstalt="451230" height="575" width="339"]]
3
4
5
6 **Table of Contents:**
7
8 {{toc/}}
9
10
11
12
13
14 = 1. Introduction =
15
16 == 1.1 What is LHT65N LoRaWAN Temperature & Humidity Sensor ==
17
18
19 (((
20 The Dragino (% style="color:blue" %)**LHT65N Temperature & Humidity sensor**(%%) is a Long Range LoRaWAN Sensor. It includes a (% style="color:blue" %)**built-in Temperature & Humidity sensor**(%%) and has an external sensor connector to connect to an external (% style="color:blue" %)**Temperature Sensor.**
21 )))
22
23 (((
24 The LHT65N allows users to send data and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, building automation, and so on.
25 )))
26
27 (((
28 LHT65N has a (% style="color:blue" %)**built-in 2400mAh non-chargeable battery**(%%) which can be used for up to 10 years*.
29 )))
30
31 (((
32 LHT65N is full compatible with LoRaWAN v1.0.3 Class A protocol, it can work with a standard LoRaWAN gateway.
33 )))
34
35 (((
36 LHT65N supports (% style="color:blue" %)**Datalog Feature**(%%). It will record the data when there is no network coverage and users can retrieve the sensor value later to ensure no miss for every sensor reading.
37 )))
38
39 (((
40 *The actual battery life depends on how often to send data, please see the battery analyzer chapter.
41 )))
42
43
44 == 1.2 Features ==
45
46
47 * LoRaWAN v1.0.3 Class A protocol
48 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915
49 * AT Commands to change parameters
50 * Remote configure parameters via LoRaWAN Downlink
51 * Firmware upgradeable via program port
52 * Built-in 2400mAh battery for up to 10 years of use.
53 * Built-in Temperature & Humidity sensor
54 * Optional External Sensors
55 * Tri-color LED to indicate working status
56 * Datalog feature (Max 3328 records)
57
58 == 1.3 Specification ==
59
60
61 (% style="color:#037691" %)**Built-in Temperature Sensor:**
62
63 * Resolution: 0.01 °C
64 * Accuracy Tolerance : Typ ±0.3 °C
65 * Long Term Drift: < 0.02 °C/yr
66 * Operating Range: -40 ~~ 85 °C
67
68 (% style="color:#037691" %)**Built-in Humidity Sensor:**
69
70 * Resolution: 0.04 %RH
71 * Accuracy Tolerance : Typ ±3 %RH
72 * Long Term Drift: < 0.25 RH/yr
73 * Operating Range: 0 ~~ 96 %RH
74
75 (% style="color:#037691" %)**External Temperature Sensor:**
76
77 * Resolution: 0.0625 °C
78 * ±0.5°C accuracy from -10°C to +85°C
79 * ±2°C accuracy from -55°C to +125°C
80 * Operating Range: -55 °C ~~ 125 °C
81
82 = 2. Connect LHT65N to IoT Server =
83
84 == 2.1 How does LHT65N work? ==
85
86
87 (((
88 LHT65N is configured as LoRaWAN OTAA Class A mode by default. Each LHT65N is shipped with a worldwide unique set of OTAA keys. To use LHT65N in a LoRaWAN network, first, we need to put the OTAA keys in LoRaWAN Network Server and then activate LHT65N.
89 )))
90
91 (((
92 If LHT65N is under the coverage of this LoRaWAN network. LHT65N can join the LoRaWAN network automatically. After successfully joining, LHT65N will start to measure environment temperature and humidity, and start to transmit sensor data to the LoRaWAN server. The default period for each uplink is 20 minutes.
93 )))
94
95
96 == 2.2 How to Activate LHT65N? ==
97
98
99 (((
100 The LHT65N has two working modes:
101 )))
102
103 * (((
104 (% style="color:blue" %)**Deep Sleep Mode**(%%): LHT65N doesn't have any LoRaWAN activation. This mode is used for storage and shipping to save battery life.
105 )))
106 * (((
107 (% style="color:blue" %)**Working Mode**(%%):  In this mode, LHT65N works as LoRaWAN Sensor mode to Join LoRaWAN network and send out the sensor data to the server. Between each sampling/tx/rx periodically, LHT65N will be in STOP mode (IDLE mode), in STOP mode, LHT65N has the same power consumption as Deep Sleep mode. 
108 )))
109
110 (((
111 The LHT65N is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
112 )))
113
114 [[image:image-20230717144740-2.png||_mstalt="430794" height="391" width="267"]]
115
116 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
117 |=(% style="width: 167px;background-color:#4F81BD;color:white" %)**Behavior on ACT**|=(% style="width: 117px;background-color:#4F81BD;color:white" %)**Function**|=(% style="width: 226px;background-color:#4F81BD;color:white" %)**Action**
118 |(% style="background-color:#f2f2f2; width:167px" %)Pressing ACT between 1s < time < 3s|(% style="background-color:#f2f2f2; width:117px" %)Test uplink status|(% style="background-color:#f2f2f2; width:225px" %)(((
119 If LHT65N is already Joined to rhe LoRaWAN network, LHT65N will send an uplink packet, if LHT65N has external sensor connected,(% style="color:blue" %)**Blue led** (%%)will blink once. If LHT65N has not external sensor, (% style="color:red" %)**Red led**(%%) will blink once.
120 )))
121 |(% style="background-color:#f2f2f2; width:167px" %)Pressing ACT for more than 3s|(% style="background-color:#f2f2f2; width:117px" %)Active Device|(% style="background-color:#f2f2f2; width:225px" %)(((
122 (% style="background-color:#f2f2f2; color:green" %)**Green led**(%%) will fast blink 5 times, LHT65N will enter working mode and start to JOIN LoRaWAN network.
123 (% style="background-color:#f2f2f2; color:green" %)**Green led**(%%) will solidly turn on for 5 seconds after join in network.
124 )))
125 |(% style="background-color:#f2f2f2; width:167px" %)Fast press ACT 5 times.|(% style="background-color:#f2f2f2; width:117px" %)Deactivate Device|(% style="background-color:#f2f2f2; width:225px" %)(% style="color:red" %)**Red led**(%%) will solid on for 5 seconds. Means LHT65N is in Deep Sleep Mode.
126
127 == 2.3 Example to join LoRaWAN network ==
128
129
130 (% class="wikigeneratedid" %)
131 This section shows an example of how to join the TTN V3 LoRaWAN IoT server. Use with other LoRaWAN IoT servers is of a similar procedure.
132
133 (% class="wikigeneratedid" %)
134 [[image:image-20220522232442-1.png||_mstalt="427830" height="387" width="648"]]
135
136
137 (((
138 Assume the LPS8N is already set to connect to [[TTN V3 network>>url:https://eu1.cloud.thethings.network]], So it provides network coverage for LHT65N. Next we need to add the LHT65N device in TTN V3:
139 )))
140
141
142 === 2.3.1 Step 1: Create Device on TTN ===
143
144
145 (((
146 Create a device in TTN V3 with the OTAA keys from LHT65N.
147 )))
148
149 (((
150 Each LHT65N is shipped with a sticker with its device EUI, APP Key and APP EUI as below:
151 )))
152
153 [[image:image-20230426083319-1.png||_mstalt="431106" height="258" width="556"]]
154
155 User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:
156
157 Add APP EUI in the application.
158
159 (% style="color:blue" %)**1. Create application**
160
161 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LTC2-LB--LoRaWAN_Temperature_Transmitter_User_Manual/WebHome/image-20240907111048-1.png?width=1001&height=183&rev=1.1||alt="image-20240907111048-1.png"]]
162
163 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LTC2-LB--LoRaWAN_Temperature_Transmitter_User_Manual/WebHome/image-20240907111305-2.png?width=1000&height=572&rev=1.1||alt="image-20240907111305-2.png"]]
164
165
166 (% style="color:blue" %)**2. Add devices to the created Application.**
167
168
169 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LTC2-LB--LoRaWAN_Temperature_Transmitter_User_Manual/WebHome/image-20240907111659-3.png?width=977&height=185&rev=1.1||alt="image-20240907111659-3.png"]]
170
171 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LTC2-LB--LoRaWAN_Temperature_Transmitter_User_Manual/WebHome/image-20240907111820-5.png?width=975&height=377&rev=1.1||alt="image-20240907111820-5.png"]]
172
173 (% style="color:blue" %)**3. Enter end device specifics manually.**
174
175 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LTC2-LB--LoRaWAN_Temperature_Transmitter_User_Manual/WebHome/image-20240907112136-6.png?width=697&height=687&rev=1.1||alt="image-20240907112136-6.png"]]
176
177
178 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LTC2-LB--LoRaWAN_Temperature_Transmitter_User_Manual/WebHome/image-20240907112427-7.png?rev=1.1||alt="image-20240907112427-7.png"]]
179
180
181 === 2.3.2 Step 2: Add decoder ===
182
183 In TTN, user can add a custom payload so it shows friendly reading.
184
185 Click this link to get the decoder: [[LHT65N decoder>>https://github.com/dragino/dragino-end-node-decoder/tree/main/LHT65N]].
186
187 Below is TTN screen shot
188
189 [[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LWL04--LoRaWAN_Water_Leak_Sensor_User_Manual/WebHome/image-20240909162501-5.png?width=1084&height=516&rev=1.1||alt="image-20240909162501-5.png"]]
190
191 [[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LWL04--LoRaWAN_Water_Leak_Sensor_User_Manual/WebHome/image-20240909162647-6.png?width=1086&height=494&rev=1.1||alt="image-20240909162647-6.png"]]
192
193 === 2.3.3 Step 3: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
194
195
196 (((
197 Use ACT button to activate LHT65N and it will auto-join to the TTN V3 network. After join success, it will start to upload sensor data to TTN V3 and user can see in the panel.
198 )))
199
200 [[image:image-20220522233300-8.png||_mstalt="428389" height="219" width="722"]]
201
202
203 == 2.4 Uplink Payload (Fport~=2) ==
204
205
206 (((
207 The uplink payload includes totally 11 bytes. Uplink packets use FPORT=2 and (% style="color:#4f81bd" %)**every 20 minutes**(%%) send one uplink by default.
208 )))
209
210 (((
211 After each uplink, the (% style="color:blue" %)**BLUE LED**(%%) will blink once.
212 )))
213
214 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:390px" %)
215 |=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
216 **Size(bytes)**
217 )))|=(% style="width: 30px;background-color:#4F81BD;color:white" %)(((
218 **2**
219 )))|=(% style="width: 100px;background-color:#4F81BD;color:white" %)(((
220 **2**
221 )))|=(% style="width: 100px;background-color:#4F81BD;color:white" %)(((
222 **2**
223 )))|=(% style="width: 50px;background-color:#4F81BD;color:white" %)(((
224 **1**
225 )))|=(% style="width: 50px;background-color:#4F81BD;color:white" %)(((
226 **4**
227 )))
228 |(% style="width:97px" %)(((
229 Value
230 )))|(% style="width:39px" %)(((
231 [[BAT>>||anchor="H2.4.2BAT-BatteryInfo"]]
232 )))|(% style="width:100px" %)(((
233 (((
234 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
235 )))
236 )))|(% style="width:77px" %)(((
237 (((
238 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
239 )))
240 )))|(% style="width:47px" %)(((
241 [[Ext>>||anchor="H2.4.5Ext23"]] #
242 )))|(% style="width:51px" %)(((
243 [[Ext value>>||anchor="H2.4.6Extvalue"]]
244 )))
245
246 * The First 6 bytes: has fix meanings for every LHT65N.
247
248 * The 7th byte (EXT #): defines the external sensor model.
249
250 * The 8^^th^^ ~~ 11^^th^^ byte: the value for external sensor value. The definition is based on external sensor type. (If EXT=0, there won't be these four bytes.)
251
252 === 2.4.1 Decoder in TTN V3 ===
253
254
255 When the uplink payload arrives TTNv3, it shows HEX format and not friendly to read. We can add LHT65N decoder in TTNv3 for friendly reading.
256
257 Below is the position to put the decoder and LHT65N decoder can be download from here: [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
258
259
260 [[image:image-20220522234118-10.png||_mstalt="451464" height="353" width="729"]]
261
262
263 === 2.4.2 BAT-Battery Info ===
264
265
266 These two bytes of BAT include the battery state and the actually voltage.
267
268 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:477px" %)
269 |=(% style="width: 69px; background-color:#4F81BD;color:white" %)(((
270 **Bit(bit)**
271 )))|=(% style="width: 253px;background-color:#4F81BD;color:white" %)[15:14]|=(% style="width: 155px;background-color:#4F81BD;color:white" %)[13:0]
272 |(% style="width:66px" %)(((
273 Value
274 )))|(% style="width:250px" %)(((
275 BAT Status
276 00(b): Ultra Low ( BAT <= 2.50v)
277 01(b): Low (2.50v <=BAT <= 2.55v)
278 10(b): OK (2.55v <= BAT <=2.65v)
279 11(b): Good (BAT >= 2.65v)
280 )))|(% style="width:152px" %)Actually BAT voltage
281
282 **(b)stands for binary**
283
284
285 [[image:image-20220522235639-1.png||_mstalt="431392" height="139" width="727"]]
286
287
288 Check the battery voltage for LHT65N.
289
290 * BAT status=(0Xcba4>>14)&0xFF=11 (BIN) ，very good
291
292 * Battery Voltage =0xCBA4&0x3FFF=0x0BA4=2980mV
293
294 === 2.4.3 Built-in Temperature ===
295
296
297 [[image:image-20220522235639-2.png||_mstalt="431756" height="138" width="722"]]
298
299 * Temperature:  0x0ABB/100=27.47℃
300
301 [[image:image-20220522235639-3.png||_mstalt="432120"]]
302
303 * Temperature:  (0xF5C6-65536)/100=-26.18℃
304
305 === 2.4.4 Built-in Humidity ===
306
307
308 [[image:image-20220522235639-4.png||_mstalt="432484" height="138" width="722"]]
309
310 * Humidity:    0x025C/10=60.4%
311
312 === 2.4.5 Ext # ===
313
314
315 Bytes for External Sensor:
316
317 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:425px" %)
318 |=(% style="width: 102px; background-color:#4F81BD;color:white" %)**EXT # **Value|=(% style="width: 323px;background-color:#4F81BD;color:white" %)External Sensor Type
319 |(% style="width:102px" %)0x01|(% style="width:319px" %)Sensor E3, Temperature Sensor
320 |(% style="width:102px" %)0x09|(% style="width:319px" %)Sensor E3, Temperature Sensor, Datalog Mod
321 |(% style="width:102px" %)0x06|(% style="width:319px" %)ADC Sensor(use with E2 Cable)
322 |(% style="width:102px" %)0x02|(% style="width:319px" %)TMP117 Sensor
323 |(% style="width:102px" %)0x11|(% style="width:319px" %)SHT31 Sensor
324 |(% style="width:102px" %)0x04|(% style="width:319px" %)Interrupt Mode
325 |(% style="width:102px" %)0x08|(% style="width:319px" %)Counting Mode
326 |(% style="width:102px" %)0x10|(% style="width:319px" %)E2 sensor (TMP117)with Unix Timestamp
327
328 === 2.4.6 Ext value ===
329
330 ==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
331
332
333 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:500px" %)
334 |=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
335 **Size(bytes)**
336 )))|=(% style="width: 80px;background-color:#4F81BD;color:white" %)(((
337 **2**
338 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
339 2
340 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
341 **2**
342 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
343 1
344 )))|=(% style="width: 80px;background-color:#4F81BD;color:white" %)(((
345 2
346 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
347 2
348 )))
349 |(% style="width:110px" %)(((
350 Value
351 )))|(% style="width:71px" %)(((
352 BAT & BAT Status
353 )))|(% style="width:99px" %)TempC_SHT|(% style="width:132px" %)Hum_SHT|(% style="width:54px" %)(((
354 Status & Ext
355 )))|(% style="width:64px" %)TempC_DS|(% style="width:64px" %)senseless
356
357 [[image:image-20220522235639-5.png||_mstalt="432848"]]
358
359
360 * DS18B20 temp=0x0ADD/100=27.81℃
361
362 The last 2 bytes of data are meaningless
363
364 [[image:image-20220522235639-6.png||_mstalt="433212"]]
365
366
367 * External temperature= (0xF54F-65536)/100=-27.37℃
368
369 F54F :  (F54F & 8000 == 1) , temp = (F54F - 65536)/100 = 27.37℃
370
371 （0105 & 8000：Judge whether the highest bit is 1, when the highest bit is 1, it is negative）
372
373 The last 2 bytes of data are meaningless
374
375 If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
376
377
378 ==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
379
380
381 (((
382 Timestamp mode is designed for LHT65N with E3 probe, it will send the uplink payload with Unix timestamp. With the limitation of 11 bytes (max distance of AU915/US915/AS923 band), the time stamp mode will be lack of BAT voltage field, instead, it shows the battery status. The payload is as below:
383 )))
384
385 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:480px" %)
386 |=(% style="width: 50px;background-color:#4F81BD;color:white" %)(((
387 **Size(bytes)**
388 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
389 **2**
390 )))|=(% style="width: 120px;background-color:#4F81BD;color:white" %)(((
391 **2**
392 )))|=(% style="width: 120px;background-color:#4F81BD;color:white" %)(((
393 **2**
394 )))|=(% style="width: 50px;background-color:#4F81BD;color:white" %)(((
395 **1**
396 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
397 **4**
398 )))
399 |(% style="width:110px" %)(((
400 Value
401 )))|(% style="width:71px" %)(((
402 External temperature
403 )))|(% style="width:99px" %)(((
404 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
405 )))|(% style="width:132px" %)(((
406 BAT Status & [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
407 )))|(% style="width:54px" %)(((
408 Status & Ext
409 )))|(% style="width:64px" %)(((
410 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp"]]
411 )))
412
413 * **Battery status & Built-in Humidity**
414
415 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:461px" %)
416 |=(% style="width: 69px;background-color:#4F81BD;color:white" %)Bit(bit)|=(% style="width: 258px;background-color:#4F81BD;color:white" %)[15:14]|=(% style="width: 134px;background-color:#4F81BD;color:white" %)[11:0]
417 |(% style="width:67px" %)Value|(% style="width:256px" %)(((
418 BAT Status
419 00(b): Ultra Low ( BAT <= 2.50v)
420 01(b): Low  (2.50v <=BAT <= 2.55v)
421 10(b): OK   (2.55v <= BAT <=2.65v)
422 11(b): Good   (BAT >= 2.65v)
423 )))|(% style="width:132px" %)(((
424 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
425 )))
426
427 * **Status & Ext Byte**
428
429 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:500px" %)
430 |(% style="background-color:#4f81bd; color:white; width:60px" %)**Bits**|(% style="background-color:#4f81bd; color:white; width:90px" %)**7**|(% style="background-color:#4f81bd; color:white; width:100px" %)**6**|(% style="background-color:#4f81bd; color:white; width:90px" %)**5**|(% style="background-color:#4f81bd; color:white; width:100px" %)**4**|(% style="background-color:#4f81bd; color:white; width:60px" %)**[3:0]**
431 |(% style="width:96px" %)Status&Ext|(% style="width:124px" %)None-ACK Flag|(% style="width:146px" %)Poll Message FLAG|(% style="width:109px" %)Sync time OK|(% style="width:143px" %)Unix Time Request|(% style="width:106px" %)Ext: 0b(1001)
432
433 * (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
434 * (% style="color:blue" %)**Sync time OK**: (%%) 1: Set time ok，0: N/A. After time SYNC request is sent, LHT65N will set this bit to 0 until got the time stamp from the application server.
435 * (% style="color:blue" %)**Unix Time Request**:(%%)  1: Request server downlink Unix time, 0 : N/A. In this mode, LHT65N will set this bit to 1 every 10 days to request a time SYNC. (AT+SYNCMOD to set this)
436
437 ==== 2.4.6.3 Ext~=6, ADC Sensor(use with E2 Cable) ====
438
439
440 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:500px" %)
441 |=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
442 **Size(bytes)**
443 )))|=(% style="width: 80px;background-color:#4F81BD;color:white" %)(((
444 **2**
445 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
446 2
447 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
448 **2**
449 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
450 1
451 )))|=(% style="width: 80px;background-color:#4F81BD;color:white" %)(((
452 2
453 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
454 2
455 )))
456 |(% style="width:110px" %)(((
457 Value
458 )))|(% style="width:71px" %)(((
459 BAT & BAT Status
460 )))|(% style="width:99px" %)TempC_SHT|(% style="width:132px" %)Hum_SHT|(% style="width:54px" %)(((
461 Status & Ext
462 )))|(% style="width:64px" %)ADC_Value|(% style="width:64px" %)senseless
463
464 In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
465
466 be used to power the external ADC sensor; user can control the power on time for this
467
468 (% style="color:blue" %)**sensor by setting:**
469
470 **AT+EXT=6,timeout**  (% style="color:red" %)**Time to power this sensor, from 0 ~~ 65535ms**
471
472 **For example:**
473
474 AT+EXT=6,1000 will power this sensor for 1000ms before sampling the ADC value.
475
476
477 Or use **downlink command A2** to set the same.
478
479 The measuring range of the node is only about 0.1V to 1.1V The voltage resolution is about 0.24mv.
480
481 When the measured output voltage of the sensor is not within the range of 0.1V and 1.1V, the output voltage terminal of the sensor shall be divided The example in the following figure is to reduce the output voltage of the sensor by three times If it is necessary to reduce more times, calculate according to the formula in the figure and connect the corresponding resistance in series.
482
483 [[image:image-20220628150112-1.png||_mstalt="427414" height="241" width="285"]]
484
485
486 When ADC_IN1 pin is connected to GND or suspended, ADC value is 0
487
488 [[image:image-20220628150714-4.png||_mstalt="431054"]]
489
490
491 When the voltage collected by ADC_IN1 is less than the minimum range, the minimum range will be used as the output; Similarly, when the collected voltage is greater than the maximum range, the maximum range will be used as the output.
492
493
494 1) The minimum range is about 0.1V. Each chip has internal calibration, so this value is close to 0.1V
495
496 [[image:image-20220628151005-5.png||_mstalt="429546"]]
497
498
499 2) The maximum range is about 1.1V. Each chip has internal calibration, so this value is close to 1.1v
500
501 [[image:image-20220628151056-6.png||_mstalt="431873"]]
502
503
504 3) Within range
505
506 [[image:image-20220628151143-7.png||_mstalt="431210"]]
507
508
509 ==== 2.4.6.4 Ext~=2 TMP117 Sensor(Since Firmware v1.3) ====
510
511
512 [[image:image-20230717151328-8.png||_mstalt="433173" height="463" width="384"]]
513
514
515 (% style="color:blue" %)**Ext=2,Temperature Sensor(TMP117):**
516
517
518 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:500px" %)
519 |=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
520 **Size(bytes)**
521 )))|=(% style="width: 80px;background-color:#4F81BD;color:white" %)(((
522 **2**
523 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
524 2
525 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
526 **2**
527 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
528 1
529 )))|=(% style="width: 80px;background-color:#4F81BD;color:white" %)(((
530 2
531 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
532 2
533 )))
534 |(% style="width:110px" %)(((
535 Value
536 )))|(% style="width:71px" %)(((
537 BAT & BAT Status
538 )))|(% style="width:99px" %)TempC_SHT|(% style="width:132px" %)Hum_SHT|(% style="width:54px" %)(((
539 Status & Ext
540 )))|(% style="width:64px" %)TempC_Temp117|(% style="width:64px" %)senseless
541
542 [[image:image-20220906102307-7.png||_mstalt="430443"]]
543
544 (% style="color:blue" %)**Interrupt Mode and Counting Mode:**
545
546 The external cable NE2 can be use for MOD4 and MOD8
547
548
549 ==== 2.4.6.5 Ext~=11 SHT31 Sensor (Since Firmware v1.4.1) ====
550
551
552 [[image:image-20230717151245-7.png||_mstalt="432133" height="467" width="466"]]
553
554 (% style="color:blue" %)**Ext=11,Temperature & Humidity Sensor(SHT31):**
555
556 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:500px" %)
557 |=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
558 **Size(bytes)**
559 )))|=(% style="width: 80px;background-color:#4F81BD;color:white" %)(((
560 **2**
561 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
562 2
563 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
564 **2**
565 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
566 1
567 )))|=(% style="width: 80px;background-color:#4F81BD;color:white" %)(((
568 2
569 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
570 2
571 )))
572 |(% style="width:110px" %)(((
573 Value
574 )))|(% style="width:71px" %)(((
575 BAT & BAT Status
576 )))|(% style="width:99px" %)TempC_SHT|(% style="width:132px" %)Hum_SHT|(% style="width:54px" %)(((
577 Status & Ext
578 )))|(% style="width:64px" %)Ext_TempC_SHT|(% style="width:64px" %)Ext_Hum_SHT
579
580 [[image:SHT31.png||_mstalt="104715"]]
581
582
583 ==== 2.4.6.6 Ext~=4 Interrupt Mode(Since Firmware v1.3) ====
584
585
586 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will send an uplink when there is a trigger.**
587
588
589 (% style="color:blue" %)**Interrupt Mode can be used to connect to external interrupt sensors such as:**
590
591 (% style="color:#037691" %)**Case 1: Door Sensor.** (%%)3.3v Out for such sensor is just to detect Open/Close.
592
593 In Open State, the power consumption is the same as if there is no probe
594
595 In Close state, the power consumption will be 3uA higher than normal.
596
597 [[image:image-20220906100852-1.png||_mstalt="429156" height="205" width="377"]]
598
599
600 Ext=4,Interrupt Sensor：
601
602 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:504px" %)
603 |(% style="width:101px" %)(((
604 **AT+EXT=4,1**
605 )))|(% style="width:395px" %)(((
606 **Sent uplink packet in both rising and falling interrupt**
607 )))
608 |(% style="width:101px" %)(((
609 **AT+EXT=4,2**
610 )))|(% style="width:395px" %)(((
611 **Sent uplink packet only in falling interrupt**
612 )))
613 |(% style="width:101px" %)(((
614 **AT+EXT=4,3**
615 )))|(% style="width:395px" %)(((
616 **Sent uplink packet only in rising interrupt**
617 )))
618
619 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
620 |=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
621 **Size(bytes)**
622 )))|=(% style="width: 90px;background-color:#4F81BD;color:white" %)(((
623 **2**
624 )))|=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
625 2
626 )))|=(% style="width: 50px;background-color:#4F81BD;color:white" %)(((
627 **2**
628 )))|=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
629 1
630 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)1|=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
631 1
632 )))|=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
633 2
634 )))
635 |(% style="width:110px" %)(((
636 Value
637 )))|(% style="width:71px" %)(((
638 BAT & BAT Status
639 )))|(% style="width:99px" %)TempC_SHT|(% style="width:132px" %)Hum_SHT|(% style="width:54px" %)(((
640 Status & Ext
641 )))|(% style="width:64px" %)Exti_pin_level|(% style="width:64px" %)Exti_status|(% style="width:64px" %)senseless
642
643 Trigger by falling edge:
644
645 [[image:image-20220906101145-2.png||_mstalt="428324"]]
646
647
648 Trigger by raising edge:
649
650 [[image:image-20220906101145-3.png||_mstalt="428688"]]
651
652
653 (% style="color:blue" %)**BAT & BAT Status :**
654
655 Check the battery voltage.
656
657 Ex1: 0x0B45 = 2885mV
658
659 Ex2: 0x0B49 = 2889mV
660
661
662 (% style="color:blue" %)**TempC_SHT :**
663
664 The temperature detected by the built-in temperature and humidity sensor SHT31.
665
666 If payload is: 0105H:  (0105 & 8000 == 0), temp = 0105H /10 = 26.1 degree
667
668 If payload is: FF3FH :  (FF3F & 8000 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
669
670 (FF3F & 8000: Judge whether the highest bit is 1, when the highest bit is 1, it is negative)
671
672
673 (% style="color:blue" %)**Hum_SHT :**
674
675 The humidity detected by the built-in temperature and humidity sensor SHT31.
676
677 Read:0295(H)=661(D)    Value:  661 / 10=66.1, So 66.1%
678
679
680 (% style="color:blue" %)**Status & Ext :**
681
682 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:500px" %)
683 |(% style="background-color:#4f81bd; color:white; width:60px" %)**Bits**|(% style="background-color:#4f81bd; color:white; width:90px" %)**7**|(% style="background-color:#4f81bd; color:white; width:100px" %)**6**|(% style="background-color:#4f81bd; color:white; width:90px" %)**5**|(% style="background-color:#4f81bd; color:white; width:100px" %)**4**|(% style="background-color:#4f81bd; color:white; width:60px" %)**[3:0]**
684 |(% style="width:96px" %)Status&Ext|(% style="width:124px" %)None-ACK Flag|(% style="width:146px" %)Poll Message FLAG|(% style="width:109px" %)Sync time OK|(% style="width:143px" %)Unix Time Request|(% style="width:106px" %)Ext: 0b(1001)
685
686 * (% style="color:#037691" %)**Poll Message Flag:**(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
687 * (% style="color:#037691" %)**Sync time OK:**(%%)  1: Set time ok，0: N/A. After time SYNC request is sent, LHT65N will set this bit to 0 until got the time stamp from the application server.
688 * (% style="color:#037691" %)**Unix Time Request:**(%%) 1: Request server downlink Unix time, 0 : N/A. In this mode, LHT65N will set this bit to 1 every 10 days to request a time SYNC. (AT+SYNCMOD to set this)
689
690 (% style="color:blue" %)**Exti_pin_level : **
691
692 * (% style="color:#037691" %)**Wet contacts:**(%%) high and low levels . 1: high level; 0: low level.
693 * (% style="color:#037691" %)**Dry contacts:**(%%)  1: closed; 0: open
694
695 (% style="color:blue" %)**Exti_status :**
696
697 Determines whether the uplink packet is generated by an interrupt.
698
699 1: Interrupt packet
700
701 0: Normal TDC uplink packet
702
703
704 (% style="color:blue" %)**senseless :**
705
706 Reserved position, meaningless. The value is fixed to 0x7FFF.
707
708
709 ==== 2.4.6.7 Ext~=8 Counting Mode(Since Firmware v1.3) ====
710
711
712 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will count for every interrupt and uplink periodically.**
713
714
715 (% style="color:blue" %)**Case 1**(%%):  Low power consumption Flow Sensor, such flow sensor has pulse output and the power consumption in uA level and can be powered by LHT65N.
716
717 [[image:image-20220906101320-4.png||_mstalt="427336" height="366" width="698"]]
718
719
720 (% style="color:blue" %)**Case 2**(%%):  Normal Flow Sensor: Such flow sensor has higher power consumption and is not suitable to be powered by LHT65N. It is powered by external power and output <3.3v pulse
721
722 [[image:image-20220906101320-5.png||_mstalt="427700" height="353" width="696"]]
723
724
725 Ext=8, Counting Sensor ( 4 bytes)：
726
727 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:330px" %)
728 |(% style="width:131px" %)(((
729 **AT+EXT=8,0**
730 )))|(% style="width:195px" %)(((
731 **Count at falling interrupt**
732 )))
733 |(% style="width:131px" %)(((
734 **AT+EXT=8,1**
735 )))|(% style="width:195px" %)(((
736 **Count at rising interrupt**
737 )))
738 |(% style="width:131px" %)(((
739 **AT+SETCNT=60**
740 )))|(% style="width:195px" %)(((
741 **Sent current count to 60**
742 )))
743
744 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:420px" %)
745 |=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
746 **Size(bytes)**
747 )))|=(% style="width: 80px;background-color:#4F81BD;color:white" %)(((
748 **2**
749 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
750 2
751 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
752 **2**
753 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
754 1
755 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
756 4
757 )))
758 |(% style="width:110px" %)(((
759 Value
760 )))|(% style="width:71px" %)(((
761 BAT & BAT Status
762 )))|(% style="width:99px" %)TempC_SHT|(% style="width:132px" %)Hum_SHT|(% style="width:54px" %)(((
763 Status & Ext
764 )))|(% style="width:64px" %)Exit_count
765
766 [[image:image-20220906101320-6.png||_mstalt="428064"]]
767
768
769 (% style="color:blue" %)**A2 downlink Command：**
770
771 A2 02:  Same as AT+EXT=2 (AT+EXT= second byte)
772
773 A2 06 01 F4:  Same as AT+EXT=6,500 (AT+EXT= second byte, third and fourth bytes)
774
775 A2 04 02:  Same as AT+EXT=4,2 (AT+EXT= second byte, third byte)
776
777 A2 08 01 00:  Same as AT+EXT=8,0 (AT+EXT= second byte, fourth byte)
778
779 A2 08 02 00 00 00 3C:  Same as AT+ SETCNT=60  (AT+ SETCNT = 4th byte and 5th byte and 6th byte and 7th byte)
780
781
782 ==== 2.4.6.8 Ext~=10, E2 sensor (TMP117)with Unix Timestamp(Since firmware V1.3.2) ====
783
784
785 (((
786 Timestamp mode is designed for LHT65N with E2 probe, it will send the uplink payload with Unix timestamp. With the limitation of 11 bytes (max distance of AU915/US915/AS923 band), the time stamp mode will be lack of BAT voltage field, instead, it shows the battery status. The payload is as below:
787 )))
788
789 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:480px" %)
790 |=(% style="width: 50px;background-color:#4F81BD;color:white" %)(((
791 **Size(bytes)**
792 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
793 **2**
794 )))|=(% style="width: 120px;background-color:#4F81BD;color:white" %)(((
795 **2**
796 )))|=(% style="width: 120px;background-color:#4F81BD;color:white" %)(((
797 **2**
798 )))|=(% style="width: 50px;background-color:#4F81BD;color:white" %)(((
799 **1**
800 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
801 **4**
802 )))
803 |(% style="width:110px" %)(((
804 Value
805 )))|(% style="width:71px" %)(((
806 External temperature
807 )))|(% style="width:99px" %)(((
808 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
809 )))|(% style="width:132px" %)(((
810 BAT Status & [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
811 )))|(% style="width:54px" %)(((
812 Status & Ext
813 )))|(% style="width:64px" %)(((
814 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp"]]
815 )))
816
817 * **Battery status & Built-in Humidity**
818
819 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:461px" %)
820 |=(% style="width: 69px;background-color:#4F81BD;color:white" %)Bit(bit)|=(% style="width: 258px;background-color:#4F81BD;color:white" %)[15:14]|=(% style="width: 134px;background-color:#4F81BD;color:white" %)[11:0]
821 |(% style="width:67px" %)Value|(% style="width:256px" %)(((
822 BAT Status
823 00(b): Ultra Low ( BAT <= 2.50v)
824 01(b): Low  (2.50v <=BAT <= 2.55v)
825 10(b): OK   (2.55v <= BAT <=2.65v)
826 11(b): Good   (BAT >= 2.65v)
827 )))|(% style="width:132px" %)(((
828 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
829 )))
830
831 * **Status & Ext Byte**
832
833 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:500px" %)
834 |(% style="background-color:#4f81bd; color:white; width:60px" %)**Bits**|(% style="background-color:#4f81bd; color:white; width:90px" %)**7**|(% style="background-color:#4f81bd; color:white; width:100px" %)**6**|(% style="background-color:#4f81bd; color:white; width:90px" %)**5**|(% style="background-color:#4f81bd; color:white; width:100px" %)**4**|(% style="background-color:#4f81bd; color:white; width:60px" %)**[3:0]**
835 |(% style="width:96px" %)Status&Ext|(% style="width:124px" %)None-ACK Flag|(% style="width:146px" %)Poll Message FLAG|(% style="width:109px" %)Sync time OK|(% style="width:143px" %)Unix Time Request|(% style="width:106px" %)Ext: 0b(1001)
836
837 * (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
838 * (% style="color:blue" %)**Sync time OK**: (%%) 1: Set time ok, 0: N/A. After time SYNC request is sent, LHT65N will set this bit to 0 until got the time stamp from the application server.
839 * (% style="color:blue" %)**Unix Time Request**:(%%)  1: Request server downlink Unix time, 0 : N/A. In this mode, LHT65N will set this bit to 1 every 10 days to request a time SYNC. (AT+SYNCMOD to set this)
840
841 == 2.5 Show data on Datacake ==
842
843
844 (((
845 Datacake IoT platform provides a human-friendly interface to show the sensor data, once we have sensor data in TTN V3, we can use Datacake to connect to TTN V3 and see the data in Datacake. Below are the steps:
846 )))
847
848
849 (((
850 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the LoRaWAN network.
851 )))
852
853 (((
854 (% style="color:blue" %)**Step 2**(%%): Configure your Application to forward data to Datacake you will need to add integration. Go to TTN V3 Console ~-~-> Applications ~-~-> Integrations ~-~-> Add Integrations.
855 )))
856
857
858 (((
859 Add Datacake:
860 )))
861
862 [[image:image-20220523000825-7.png||_mstalt="429884" height="262" width="583"]]
863
864
865 Select default key as Access Key:
866
867
868 [[image:image-20220523000825-8.png||_mstalt="430248" height="453" width="406"]]
869
870
871 In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/]]) , add LHT65 device.
872
873 [[image:image-20220523000825-9.png||_mstalt="430612" height="366" width="392"]]
874
875
876 [[image:image-20220523000825-10.png||_mstalt="450619" height="413" width="728"]]
877
878
879 == 2.6 Datalog Feature ==
880
881
882 (((
883 Datalog Feature is to ensure IoT Server can get all sampling data from Sensor even if the LoRaWAN network is down. For each sampling, LHT65N will store the reading for future retrieving purposes. There are two ways for IoT servers to get datalog from LHT65N.
884 )))
885
886
887 === 2.6.1 Ways to get datalog via LoRaWAN ===
888
889
890 There are two methods:
891
892 (% style="color:blue" %)**Method 1:** (%%)IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specified time range.
893
894
895 (% style="color:blue" %)**Method 2: **(%%)Set [[PNACKMD=1>>||anchor="H4.13AutoSendNone-ACKmessages"]], LHT65N will wait for ACK for every uplink, when there is no LoRaWAN network, LHT65N will mark these records with non-ack messages and store the sensor data, and it will send all messages (10s interval) after the network recovery.
896
897
898 (% style="color:red" %)**Note for method 2:**
899
900 * a) LHT65N will do an ACK check for data records sending to make sure every data arrive server.
901 * b) LHT65N will send data in **CONFIRMED Mode** when PNACKMD=1, but LHT65N won't re-transmit the packet if it doesn't get ACK, it will just mark it as a NONE-ACK message. In a future uplink if LHT65N gets a ACK, LHT65N will consider there is a network connection and resend all NONE-ACK Message.
902
903 Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
904
905 [[image:image-20220703111700-2.png||_mstalt="426244" height="381" width="1119"]]
906
907
908 === 2.6.2 Unix TimeStamp ===
909
910
911 LHT65N uses Unix TimeStamp format based on
912
913
914 [[image:image-20220523001219-11.png||_mstalt="450450" height="97" width="627"]]
915
916
917 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :
918
919 Below is the converter example
920
921 [[image:image-20220523001219-12.png||_mstalt="450827" height="298" width="720"]]
922
923
924 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
925
926
927 === 2.6.3 Set Device Time ===
928
929
930 (((
931 (% style="color:blue" %)**There are two ways to set device's time:**
932 )))
933
934 (((
935 **1.  Through LoRaWAN MAC Command (Default settings)**
936 )))
937
938 (((
939 User need to set SYNCMOD=1 to enable sync time via MAC command.
940 )))
941
942 (((
943 Once LHT65N Joined LoRaWAN network, it will send the MAC command (DeviceTimeReq) and the server will reply with (DeviceTimeAns) to send the current time to LHT65N. If LHT65N fails to get the time from the server, LHT65N will use the internal time and wait for next time request (AT+SYNCTDC to set the time request period, default is 10 days).
944 )))
945
946 (((
947 (% style="color:red" %)**Note: LoRaWAN Server need to support LoRaWAN v1.0.3(MAC v1.0.3) or higher to support this MAC command feature, Chirpstack,TTN V3 v3 and loriot support but TTN V3 v2 doesn't support. If server doesn't support this command, it will through away uplink packet with this command, so user will lose the packet with time request for TTN V3 v2 if SYNCMOD=1.**
948 )))
949
950
951 (((
952 **2. Manually Set Time**
953 )))
954
955 (((
956 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
957 )))
958
959
960 === 2.6.4 Poll sensor value ===
961
962
963 User can poll sensor value based on timestamps from the server. Below is the downlink command.
964
965 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:428px" %)
966 |(% style="background-color:#4f81bd; color:white; width:59px" %)**1byte**|(% style="background-color:#4f81bd; color:white; width:128px" %)**4bytes**|(% style="background-color:#4f81bd; color:white; width:124px" %)**4bytes**|(% style="background-color:#4f81bd; color:white; width:117px" %)**1byte**
967 |(% style="width:58px" %)31|(% style="width:128px" %)Timestamp start|(% style="width:123px" %)Timestamp end|(% style="width:116px" %)Uplink Interval
968
969 Timestamp start and Timestamp end use Unix TimeStamp format as mentioned above. Devices will reply with all data log during this time period, use the uplink interval.
970
971 For example, downlink command (% _mstmutation="1" %)**31 5FC5F350 5FC6 0160 05**(%%)
972
973 Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00's data
974
975 Uplink Internal =5s, means LHT65N will send one packet every 5s. range 5~~255s.
976
977
978 === 2.6.5 Datalog Uplink payload ===
979
980
981 The Datalog poll reply uplink will use below payload format.
982
983 **Retrieval data payload:**
984
985 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:480px" %)
986 |=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
987 **Size(bytes)**
988 )))|=(% style="width: 90px;background-color:#4F81BD;color:white" %)**2**|=(% style="width: 90px;background-color:#4F81BD;color:white" %)**2**|=(% style="width: 70px;background-color:#4F81BD;color:white" %)**2**|=(% style="width: 100px;background-color:#4F81BD;color:white" %)**1**|=(% style="width: 70px;background-color:#4F81BD;color:white" %)**4**
989 |(% style="width:97px" %)Value|(% style="width:123px" %)[[External sensor data>>||anchor="H2.4.6Extvalue"]]|(% style="width:108px" %)[[Built In Temperature>>||anchor="H2.4.3Built-inTemperature"]]|(% style="width:133px" %)[[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]|(% style="width:159px" %)Poll message flag & Ext|(% style="width:80px" %)[[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp"]]
990
991 **Poll message flag & Ext:**
992
993 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:500px" %)
994 |(% style="background-color:#4f81bd; color:white; width:60px" %)**Bits**|(% style="background-color:#4f81bd; color:white; width:90px" %)**7**|(% style="background-color:#4f81bd; color:white; width:100px" %)**6**|(% style="background-color:#4f81bd; color:white; width:90px" %)**5**|(% style="background-color:#4f81bd; color:white; width:100px" %)**4**|(% style="background-color:#4f81bd; color:white; width:60px" %)**[3:0]**
995 |(% style="width:96px" %)Status&Ext|(% style="width:124px" %)No ACK Message|(% style="width:146px" %)Poll Message Flag|(% style="width:109px" %)Sync time OK|(% style="width:143px" %)Unix Time Request|(% style="width:106px" %)Ext: 0b(1001)
996
997 (% style="color:blue" %)**No ACK Message**(%%):  1: This message means this payload is fromn Uplink Message which doesn't get ACK from the server before ( for [[PNACKMD=1>>||anchor="H4.13AutoSendNone-ACKmessages"]] feature)
998
999 (% style="color:blue" %)**Poll Message Flag**(%%): 1: This message is a poll message reply.
1000
1001 * Poll Message Flag is set to 1.
1002
1003 * Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
1004
1005 For example, in US915 band, the max payload for different DR is:
1006
1007 (% style="color:blue" %)**a) DR0:** (%%)max is 11 bytes so one entry of data
1008
1009 (% style="color:blue" %)**b) DR1:**(%%) max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
1010
1011 (% style="color:blue" %)**c) DR2:**(%%) total payload includes 11 entries of data
1012
1013 (% style="color:blue" %)**d) DR3: **(%%)total payload includes 22 entries of data.
1014
1015 If devise doesn't have any data in the polling time. Device will uplink 11 bytes of 0   
1016
1017
1018 **Example:**
1019
1020 If LHT65N has below data inside Flash:
1021
1022 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
1023 |=(% style="width: 88px; background-color:#4F81BD;color:white" %)Flash Add|=(% style="width: 132px; background-color:#4F81BD;color:white" %)**Unix Time**|=(% style="width: 40px; background-color:#4F81BD;color:white" %)**Ext**|=(% style="width: 105px; background-color:#4F81BD;color:white" %)**BAT voltage**|=(% style="width: 145px; background-color:#4F81BD;color:white" %)**Value**
1024 |(% style="width:89px" %)80196E0|(% style="width:133px" %)21/1/19 04:27:03|(% style="width:42px" %)1|(% style="width:103px" %)3145|(% style="width:131px" %)sht temp=22.00 sht hum=32.6 ds temp=327.67
1025 |(% style="width:89px" %)80196F0|(% style="width:133px" %)21/1/19 04:28:57|(% style="width:42px" %)1|(% style="width:103px" %)3145|(% style="width:131px" %)sht temp=21.90 sht hum=33.1 ds temp=327.67
1026 |(% style="width:89px" %)8019600|(% style="width:133px" %)21/1/19 04:30:30|(% style="width:42px" %)1|(% style="width:103px" %)3145|(% style="width:131px" %)sht temp=21.81 sht hum=33.4 ds temp=327.67
1027 |(% style="width:89px" %)8019610|(% style="width:133px" %)21/1/19 04:40:30|(% style="width:42px" %)1|(% style="width:103px" %)3145|(% style="width:131px" %)sht temp=21.65 sht hum=33.7 ds temp=327.67
1028 |(% style="width:89px" %)8019620|(% style="width:133px" %)21/1/19 04:50:30|(% style="width:42px" %)1|(% style="width:103px" %)3147|(% style="width:131px" %)sht temp=21.55 sht hum=34.1 ds temp=327.67
1029 |(% style="width:89px" %)8019630|(% style="width:133px" %)21/1/19 04:00:30|(% style="width:42px" %)1|(% style="width:103px" %)3149|(% style="width:131px" %)sht temp=21.50 sht hum=34.1 ds temp=327.67
1030 |(% style="width:89px" %)8019640|(% style="width:133px" %)21/1/19 04:10:30|(% style="width:42px" %)1|(% style="width:103px" %)3149|(% style="width:131px" %)sht temp=21.43 sht hum=34.6 ds temp=327.67
1031 |(% style="width:89px" %)8019650|(% style="width:133px" %)21/1/19 04:20:30|(% style="width:42px" %)1|(% style="width:103px" %)3151|(% style="width:131px" %)sht temp=21.35 sht hum=34.9 ds temp=327.67
1032
1033 If user sends below downlink command: (% style="background-color:yellow" %)3160065F9760066DA705
1034
1035 Where : Start time: 60065F97 = time 21/1/19 04:27:03
1036
1037 Stop time: 60066DA7= time 21/1/19 05:27:03
1038
1039
1040 **LHT65N will uplink this payload.**
1041
1042 [[image:image-20220523001219-13.png||_mstalt="451204" height="421" style="text-align:left" width="727"]]
1043
1044
1045 __**7FFF089801464160065F97**__ **__7FFF__ __088E__ __014B__ __41__ __60066009__** 7FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
1046
1047 Where the first 11 bytes is for the first entry:
1048
1049 7FFF089801464160065F97
1050
1051 Ext sensor data=0x7FFF/100=327.67
1052
1053 Temp=0x088E/100=22.00
1054
1055 Hum=0x014B/10=32.6
1056
1057 poll message flag & Ext=0x41,means reply data,Ext=1
1058
1059 Unix time is 0x60066009=1611030423s=21/1/19 04:27:03
1060
1061
1062 == 2.7 Alarm Mode & Feature "Multi sampling, one uplink" ==
1063
1064
1065 (((
1066 when the device is in alarm mode, it checks the built-in sensor temperature for a short time. if the temperature exceeds the preconfigured range, it sends an uplink immediately.
1067 )))
1068
1069 (((
1070 (% style="color:red" %)**Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.**
1071
1072
1073 === 2.7.1 ALARM MODE ( Since v1.3.1 firmware) ===
1074
1075 (((
1076 (% class="box infomessage" %)
1077 (((
1078 **AT+LEDALARM=1** :       Enable LED visual Alarm.  (% style="color:#4f81bd" %)**Downlink Command: 3601**
1079 )))
1080 )))
1081
1082 **DS18B20 and TMP117 Threshold Alarm(The mod1 use for external sensors （DS18B20 and TMP117 )**
1083
1084 **~ AT+WMOD=1,60,-10,20**
1085
1086
1087 Explain:
1088
1089 * (% style="color:#037691" %)**parameter1: **(%%)Set Working Mode to **Mode 1，Threshold Alarm（Out of range alarm）**
1090 * (% style="color:#037691" %)**parameter2:**(%%) Sampling Interval is **60**s.
1091 * (% style="color:#037691" %)**parameter3 & parameter4: **(%%)Temperature alarm range is **-10** to 20°C（Set the temperature range value with a coefficient of 100）
1092
1093 (% style="color:#4f81bd" %)**Downlink Command:**
1094
1095 **Example: **A5013CFC1807D0
1096
1097 MOD=01
1098
1099 CITEMP=3C(S) =60(S)
1100
1101 TEMPlow=FC18 = -1000/100=-10(℃)
1102
1103 TEMPhigh=07D0=2000/100=20(℃)
1104
1105
1106 **Fluctuation alarm for DS18B20 and TMP117(Acquisition time: minimum 1s)(The mod2 use for external sensors （DS18B20 and TMP117)**
1107
1108 **AT+WMOD=2,60,5** 
1109
1110 Explain:
1111
1112 * (% style="color:#037691" %)**parameter1: **(%%)Set Working Mode to **Mode 2，Fluctuation alarm**
1113 * (% style="color:#037691" %)**parameter2:**(%%) Sampling Interval is **60**s.
1114 * (% style="color:#037691" %)**parameter3: **(%%)The temperature fluctuation is +-5 °C
1115
1116 (% style="color:#4f81bd" %)**Downlink Command**
1117
1118 **Example: **A5023C05
1119
1120 MOD=02
1121
1122 CITEMP=3C(S)=60(S)
1123
1124 temperature fluctuation=05(℃)
1125
1126
1127 **Sampling multiple times and uplink together(The mod3 can be used for internal and external sensors)（Internal GXHT30 temperature alarm(Acquisition time: fixed at one minute)**
1128
1129 **AT+WMOD=3,1,60,20,-16,32,1**   
1130
1131 Explain:
1132
1133 * (% style="color:#037691" %)**parameter1: **(%%)Set Working Mode to **Mode 3，Sampling multiple times and uplink together**
1134 * (% style="color:#037691" %)**parameter2:**(%%) Set the temperature sampling mode to** 1**(1:DS18B20;2:TMP117;3:** **Internal GXHT30).
1135 * (% style="color:#037691" %)**parameter3: **(%%)Sampling Interval is **60**s.(This parameter has no effect on internal sensors)
1136 * (% style="color:#037691" %)**parameter4: **(%%)When there is **20** sampling dats, Device will send these data via one uplink. (max value is 60, means max 60 sampling in one uplink)
1137 * (% style="color:#037691" %)**parameter5 & parameter6: **(%%)Temperature alarm range is **-16** to **32**°C,
1138 * (% style="color:#037691" %)**parameter7:**(%%) 1 to enable temperature alarm, **0** to disable the temperature alarm. If alarm is enabled, a data will be sent immediately  if temperate exceeds the Alarm range.
1139
1140 (% style="color:#4f81bd" %)**Downlink Command:**
1141
1142 **Example: **A50301003C14FFF0002001
1143
1144 MOD=03
1145
1146 TEMP=DS18B20
1147
1148 CITEMP=003C(S)=60(S)
1149
1150 Total number of acquisitions=14
1151
1152 TEMPlow=FFF0=-16(℃)
1153
1154 TEMPhigh=0020=20(℃)
1155
1156 ARTEMP=01
1157
1158
1159 **Uplink payload( Fport=3)**
1160
1161 **Example: CBEA**01**0992**//0A41//**09C4**
1162
1163 BatV=CBEA
1164
1165 TEMP=DS18B20
1166
1167 Temp1=0992  ~/~/ 24.50℃
1168
1169 Temp2=0A41  ~/~/ 26.25℃
1170
1171 Temp3=09C4  ~/~/ 25.00℃
1172
1173 (% style="color:red" %)**Note: This uplink will automatically select the appropriate DR according to the data length**
1174
1175 (% style="color:red" %)** In this mode, the temperature resolution of ds18b20 is 0.25℃ to save power consumption**
1176 )))
1177
1178
1179 === 2.7.2 ALARM MODE ( Before v1.3.1 firmware) ===
1180
1181
1182 (% class="box infomessage" %)
1183 (((
1184 (((
1185 **AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)
1186 )))
1187
1188 (((
1189 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
1190 )))
1191
1192 (((
1193 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
1194 )))
1195
1196 (((
1197 (% _mstmutation="1" %)**AT+ARTEMP=? **(%%):  Gets the alarm range of the internal temperature sensor(% style="display:none" %)
1198 )))
1199
1200 (((
1201 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
1202 )))
1203 )))
1204
1205 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
1206
1207 Total bytes: 8 bytes
1208
1209 **Example:**AA0100010001003C
1210
1211 WMOD=01
1212
1213 CITEMP=0001
1214
1215 TEMPlow=0001
1216
1217 TEMPhigh=003C
1218
1219
1220 == 2.8 LED Indicator ==
1221
1222
1223 The LHT65 has a triple color LED which for easy showing different stage .
1224
1225 While user press ACT button, the LED will work as per LED status with ACT button.
1226
1227 In a normal working state:
1228
1229 * For each uplink, the BLUE LED or RED LED will blink once.
1230 BLUE LED when external sensor is connected.
1231 * RED LED when external sensor is not connected
1232 * For each success downlink, the PURPLE LED will blink once
1233
1234 == 2.9 installation ==
1235
1236
1237 [[image:image-20220516231650-1.png||_mstalt="428597" height="436" width="428"]]
1238
1239
1240 = 3. Sensors and Accessories =
1241
1242 == 3.1 E2 Extension Cable ==
1243
1244
1245 [[image:image-20220619092222-1.png||_mstalt="429533" height="182" width="188"]][[image:image-20220619092313-2.png||_mstalt="430222" height="182" width="173"]]
1246
1247
1248 **1m long breakout cable for LHT65N. Features:**
1249
1250 * (((
1251 Use for AT Command, works for both LHT52/LHT65N
1252 )))
1253 * (((
1254 Update firmware for LHT65N, works for both LHT52/LHT65N
1255 )))
1256 * (((
1257 Supports ADC mode to monitor external ADC
1258 )))
1259 * (((
1260 Supports Interrupt mode
1261 )))
1262 * (((
1263 Exposed All pins from the LHT65N Type-C connector.
1264
1265
1266
1267 )))
1268
1269 [[image:image-20220619092421-3.png||_mstalt="430547" height="371" width="529"]]
1270
1271
1272 == 3.2 E3 Temperature Probe ==
1273
1274
1275 [[image:image-20220515080154-4.png||_mstalt="434681" alt="photo-20220515080154-4.png" height="182" width="161"]] [[image:image-20220515080330-5.png||_mstalt="428792" height="201" width="195"]]
1276
1277
1278 Temperature sensor with 2 meters cable long
1279
1280 * Resolution: 0.0625 °C
1281 * ±0.5°C accuracy from -10°C to +85°C
1282 * ±2°C accuracy from -55°C to +125°C
1283 * Operating Range: -40 ~~ 125 °C
1284 * Working voltage 2.35v ~~ 5v
1285
1286 == 3.3 E31F Temperature Probe ==
1287
1288
1289 [[image:65N-E31F-1.jpg||_mstalt="172627" height="169" width="170"]] [[image:image-20230717151424-9.png||_mstalt="432497" height="221" width="204"]](% style="display:none" %)
1290
1291
1292 Temperature sensor with 1 meters cable long
1293
1294
1295 **Built-in Temperature Sensor:**
1296
1297 * Resolution: 0.01 °C
1298 * Accuracy Tolerance : Typ ±0.3 °C
1299 * Long Term Drift: < 0.02 °C/yr
1300 * Operating Range: -40 ~~ 80 °C
1301
1302 **Built-in Humidity Sensor:**
1303
1304 * Resolution: 0.04 % RH
1305 * Accuracy Tolerance : Typ ±3 % RH
1306 * Long Term Drift: < 0.25 RH/yr
1307 * Operating Range: 0 ~~ 96 % RH
1308
1309 **External Temperature Sensor :**
1310
1311 * Resolution: 0.01 °C
1312 * Accuracy Tolerance : Typical ±0.3 °C
1313 * Long Term Drift: < 0.02 °C/yr
1314 * Operating Range: -40 ~~ 125 °C
1315
1316 **External Humidity Sensor :**
1317
1318 * Resolution: 0.04 % RH
1319 * Accuracy Tolerance : Typ ±3 % RH
1320 * Long Term Drift: < 0.25 RH/yr
1321 * Operating Range: 0 ~~ 96 % RH
1322
1323 == 3.4 NE117 Temperature Probe (Model: LHT65N-NE117) ==
1324
1325
1326 External Temperature Sensor – NE117:
1327 Equip with TMP117A temperature sensor. TMP117 IC is NIST traceability Sensor by TI.
1328
1329 * Silica gel cable
1330 * ±0.1 °C (maximum) from –20 °C to 50 °C
1331 * ±0.2 °C (maximum) from –40 °C to 100 °C
1332 * ±0.3 °C (maximum) from –55 °C to 150 °C
1333
1334 [[image:image-20240422093011-1.png||height="349" width="350"]]
1335
1336
1337 == 3.5 Dry Contact Probe (Model: LHT65N-DC) ==
1338
1339
1340 * Design for Pulse Counting(Ext=8), Alarm (Ext=4),Open/Close Detect (Ext=4)
1341 * 3 wires: VCC/GND/INT
1342 * Cable Lenght: 1 meter
1343
1344 [[image:image-20240705140520-1.png||height="439" width="380"]](% style="display:none" %)
1345
1346 LHT65-DC can be used to connect various types of external sensor. below.
1347
1348 User can refer this link for the instructions: [[LHT65-DC Connection Instruction>>LHT65-DC Connection Instruction]].
1349
1350 [[image:image-20240422100149-5.png||height="163" width="510"]]
1351
1352 [[image:image-20240422100217-6.png||height="141" width="507"]]
1353
1354
1355 == 3.6 Door Sensor (Model: LHT65N-DS) ==
1356
1357
1358 * Aluminum Alloy Door Sensor
1359 * Detect Distance: ~~3cm
1360 * Cable Lenght: 1 meter
1361
1362 **Notice: When order LHT65N-DS, the device is by default set to: a) AT+EXT=4,1 ; b) Default Uplink Interval TDC is 12 hour.**
1363
1364 [[image:image-20240705144054-2.png||height="423" width="343"]]
1365
1366
1367 == 3.6 NIS Certificate Probe (Model: LHT65N-NIS) ==
1368
1369
1370 External Probe:
1371
1372 * Unique NIST Certi cate for each probe
1373 * External NIST Traceable probe with unique ID
1374
1375 **Notice: AT+PID=1 is by default enable, so LHT65N will also uplink the probe ID to platform.**
1376
1377 [[image:image-20240705145640-3.png]]
1378
1379
1380 = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1381
1382
1383 (((
1384 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
1385 )))
1386
1387 * (((
1388 AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
1389 )))
1390
1391 * (((
1392 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
1393 )))
1394
1395 (((
1396 There are two kinds of commands to configure LHT65N, they are:
1397 )))
1398
1399 * (((
1400 (% style="color:#4f81bd" %)**General Commands**.
1401 )))
1402
1403 (((
1404 These commands are to configure:
1405 )))
1406
1407 1. (((
1408 General system settings like: uplink interval.
1409 )))
1410 1. (((
1411 LoRaWAN protocol & radio-related commands.
1412 )))
1413
1414 (((
1415 They are the same for all Dragino Devices which supports DLWS-005 LoRaWAN Stack(Note~*~*). These commands can be found on the wiki: [[End Device Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
1416 )))
1417
1418 * (((
1419 (% style="color:#4f81bd" %)**Commands special design for LHT65N**
1420 )))
1421
1422 (((
1423 These commands are only valid for LHT65N, as below:
1424 )))
1425
1426
1427 == 4.1 Set Transmit Interval Time ==
1428
1429
1430 Feature: Change LoRaWAN End Node Transmit Interval.
1431
1432
1433 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
1434
1435 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:501px" %)
1436 |(% style="background-color:#4f81bd; color:white; width:155px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:166px" %)**Function**|(% style="background-color:#4f81bd; color:white; width:180px" %)**Response**
1437 |(% style="width:155px" %)AT+TDC=?|(% style="width:162px" %)Show current transmit Interval|(% style="width:177px" %)30000 OK the interval is 30000ms = 30s
1438 |(% style="width:155px" %)AT+TDC=60000|(% style="width:162px" %)Set Transmit Interval|(% style="width:177px" %)OK Set transmit interval to 60000ms = 60 seconds
1439
1440 (% style="color:#4f81bd" %)**Downlink Command: 0x01**
1441
1442 Format: Command Code (0x01) followed by 3 bytes time value.
1443
1444 If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.
1445
1446 * **Example 1**: Downlink Payload: 0100001E  ~/~/ Set Transmit Interval (TDC) = 30 seconds
1447
1448 * **Example 2**: Downlink Payload: 0100003C  ~/~/ Set Transmit Interval (TDC) = 60 seconds
1449
1450 == 4.2 Set External Sensor Mode ==
1451
1452
1453 Feature: Change External Sensor Mode.
1454
1455 (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1456
1457 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:500.222px" %)
1458 |(% style="background-color:#4f81bd; color:white; width:155px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:153px" %)**Function**|(% style="background-color:#4f81bd; color:white; width:160px" %)**Response**|(% style="background-color:#4f81bd; color:white; width:126px" %)**Dowlink Command**
1459 |(% style="width:155px" %)AT+EXT=?|(% style="width:151px" %)Get current external sensor mode|(% style="width:158px" %)1 OK External Sensor mode =1
1460 |(% style="width:155px" %)AT+EXT=1|(% colspan="2" rowspan="1" style="width:309px" %)Set external sensor mode to 1|(% style="width:126px" %)A201
1461 |(% style="width:155px" %)AT+EXT=9|(% colspan="2" rowspan="1" style="width:309px" %)Set to external DS18B20 with timestamp|(% style="width:126px" %)A209
1462 |(% style="width:155px" %)AT+EXT=6|(% colspan="2" rowspan="1" style="width:309px" %)Set to external ADC Sensor(use with E2 Cable)|(% style="width:126px" %)A206
1463 |(% style="width:155px" %)AT+EXT=2|(% colspan="2" rowspan="1" style="width:309px" %)Set to external TMP117 Sensor(Since Firmware v1.3)|(% style="width:126px" %)A202
1464 |(% style="width:155px" %)AT+EXT=11|(% colspan="2" rowspan="1" style="width:309px" %)Set to external SHT31 Sensor (Since Firmware v1.4.1)|(% style="width:126px" %)A20B
1465 |(% style="width:155px" %)AT+EXT=4|(% colspan="2" rowspan="1" style="width:309px" %)Set to external Interrupt Mode(Since Firmware v1.3)|(% style="width:126px" %)A204
1466 |(% style="width:155px" %)AT+EXT=8|(% colspan="2" rowspan="1" style="width:309px" %)Set to external Counting Mode(Since Firmware v1.3)|(% style="width:126px" %)A208
1467 |(% style="width:155px" %)AT+EXT=10|(% colspan="2" rowspan="1" style="width:309px" %)Set to external E2 sensor (TMP117)with Unix Timestamp(Since firmware V1.3.2)|(% style="width:126px" %)A20A
1468
1469 **Response**
1470
1471 (% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1472
1473 Total bytes: 2 ~~ 5 bytes
1474
1475 **Example:**
1476
1477 * 0xA201: Set external sensor type to E1
1478
1479 * 0xA209: Same as AT+EXT=9
1480
1481 * 0xA20702003c: Same as AT+SETCNT=60
1482
1483 == 4.3 Enable/Disable uplink DS18B20 Temperature probe ID ==
1484
1485
1486 **Feature**: If PID is enabled, LHT65N will send the DS18B20 temperature probe ID on:
1487
1488 * First Packet after OTAA Join
1489 * Every 24 hours since the first packet.
1490
1491 PID is default set to disable (0)
1492
1493 (% style="color:red" %)**Notice: This feature only valid when EXT=1 or EXt=9**
1494
1495 (% style="color:#4f81bd" %)**AT Command:**
1496
1497 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:381px" %)
1498 |(% style="background-color:#4f81bd; color:white; width:155px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:138px" %)**Function**|(% style="background-color:#4f81bd; color:white; width:88px" %)**Response**
1499 |(% style="width:155px" %)AT+PID=1|(% style="width:136px" %)Enable PID uplink|(% style="width:86px" %)OK
1500
1501 (% style="color:#4f81bd" %)**Downlink Command:**
1502
1503 * **0xA800**  **~-~->** AT+PID=0
1504 * **0xA801**     **~-~->** AT+PID=1
1505
1506 == 4.4 Set Password ==
1507
1508
1509 Feature: Set device password, max 9 digits
1510
1511 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1512
1513 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:372px" %)
1514 |(% style="background-color:#4f81bd; color:white; width:155px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:128px" %)**Function**|(% style="background-color:#4f81bd; color:white; width:89px" %)**Response**
1515 |(% style="width:155px" %)AT+PWORD=?|(% style="width:124px" %)Show password|(% style="width:86px" %)(((
1516 123456
1517
1518 OK
1519 )))
1520 |(% style="width:155px" %)AT+PWORD=999999|(% style="width:124px" %)Set password|(% style="width:86px" %)OK
1521
1522 (% style="color:#4f81bd" %)**Downlink Command:**
1523
1524 No downlink command for this feature.
1525
1526
1527 == 4.5 Quit AT Command ==
1528
1529
1530 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1531
1532 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1533
1534 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:433px" %)
1535 |(% style="background-color:#4f81bd; color:white; width:155px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:191px" %)**Function**|(% style="background-color:#4f81bd; color:white; width:87px" %)**Response**
1536 |(% style="width:155px" %)AT+DISAT|(% style="width:191px" %)Quit AT Commands mode|(% style="width:86px" %)OK
1537
1538 (% style="color:#4f81bd" %)**Downlink Command:**
1539
1540 No downlink command for this feature.
1541
1542
1543 == 4.6 Set to sleep mode ==
1544
1545
1546 Feature: Set device to sleep mode
1547
1548 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1549 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1550
1551 (% style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1552
1553 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:513px" %)
1554 |(% style="background-color:#4f81bd; color:white; width:155px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:140px" %)**Function**|(% style="background-color:#4f81bd; color:white; width:218px" %)**Response**
1555 |(% style="width:155px" %)AT+SLEEP|(% style="width:139px" %)Set to sleep mode|(% style="width:213px" %)(((
1556 Clear all stored sensor data…
1557
1558 OK
1559 )))
1560
1561 (% style="color:#4f81bd" %)**Downlink Command:**
1562
1563 * There is no downlink command to set to Sleep mode.
1564
1565 == 4.7 Set system time ==
1566
1567
1568 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1569
1570 (% style="color:#4f81bd" %)**AT Command:**
1571
1572 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:506px" %)
1573 |(% style="background-color:#4f81bd; color:white; width:188px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:318px" %)**Function**
1574 |(% style="width:154px" %)AT+TIMESTAMP=1611104352|(% style="width:285px" %)(((
1575 OK
1576
1577 Set System time to 2021-01-20 00:59:12
1578 )))
1579
1580 (% style="color:#4f81bd" %)**Downlink Command:**
1581
1582 0x306007806000  ~/~/  Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1583
1584
1585 == 4.8 Set Time Sync Mode ==
1586
1587
1588 (((
1589 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1590 )))
1591
1592 (((
1593 SYNCMOD is set to 1 by default. If user want to set a different time from LoRaWAN server, user need to set this to 0.
1594 )))
1595
1596 (% style="color:#4f81bd" %)**AT Command:**
1597
1598 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:475px" %)
1599 |(% style="background-color:#4f81bd; color:white; width:158px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:317px" %)**Function**
1600 |(% style="width:156px" %)AT+SYNCMOD=1|(% style="width:315px" %)Enable Sync system time via LoRaWAN MAC Command (DeviceTimeReq)
1601
1602 (% style="color:#4f81bd" %)**Downlink Command:**
1603
1604 0x28 01  ~/~/  Same As AT+SYNCMOD=1
1605 0x28 00  ~/~/  Same As AT+SYNCMOD=0
1606
1607
1608 == 4.9 Set Time Sync Interval ==
1609
1610
1611 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1612
1613 (% style="color:#4f81bd" %)**AT Command:**
1614
1615 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:472px" %)
1616 |(% style="background-color:#4f81bd; color:white; width:158px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:314px" %)**Function**
1617 |(% style="width:156px" %)AT+SYNCTDC=0x0A |(% style="width:311px" %)Set SYNCTDC to 10 (0x0A), so the sync time is 10 days.
1618
1619 (% style="color:#4f81bd" %)**Downlink Command:**
1620
1621 **0x29 0A**  ~/~/ Same as AT+SYNCTDC=0x0A
1622
1623
1624 == 4.10 Get data ==
1625
1626
1627 Feature: Get the current sensor data.
1628
1629 (% style="color:#4f81bd" %)**AT Command:**
1630
1631 * **AT+GETSENSORVALUE=0**      ~/~/ The serial port gets the reading of the current sensor
1632 * **AT+GETSENSORVALUE=1**      ~/~/ The serial port gets the current sensor reading and uploads it.
1633
1634 == 4.11 Print data entries base on page ==
1635
1636
1637 Feature: Print the sector data from start page to stop page (max is 416 pages).
1638
1639 (% style="color:#4f81bd" %)**AT Command: AT+PDTA**
1640
1641 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
1642 |(% style="background-color:#4f81bd; color:white; width:158px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:352px" %)**Function**
1643 |(% style="width:156px" %)(((
1644 AT+PDTA=1,3
1645 Print page 1 to 3
1646 )))|(% style="width:311px" %)(((
1647 8019500 19/6/26 16:48 1 2992 sht temp=28.21 sht hum=71.5 ds temp=27.31
1648 8019510 19/6/26 16:53 1 2994 sht temp=27.64 sht hum=69.3 ds temp=26.93
1649 8019520 19/6/26 16:58 1 2996 sht temp=28.39 sht hum=72.0 ds temp=27.06
1650 8019530 19/6/26 17:03 1 2996 sht temp=27.97 sht hum=70.4 ds temp=27.12
1651 8019540 19/6/26 17:08 1 2996 sht temp=27.80 sht hum=72.9 ds temp=27.06
1652 8019550 19/6/26 17:13 1 2998 sht temp=27.30 sht hum=72.4 ds temp=26.68
1653 8019560 19/6/26 17:22 1 2992 sht temp=26.27 sht hum=62.3 ds temp=26.56
1654 8019570
1655 8019580
1656 8019590
1657 80195A0
1658 80195B0
1659 80195C0
1660 80195D0
1661 80195E0
1662 80195F0
1663
1664 OK
1665 )))
1666
1667 (% style="color:#4f81bd" %)**Downlink Command:**
1668
1669 No downlink commands for feature
1670
1671
1672 == 4.12 Print last few data entries ==
1673
1674
1675 Feature: Print the last few data entries
1676
1677 (% style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1678
1679 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
1680 |(% style="background-color:#4f81bd; color:white; width:158px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:352px" %)**Function**
1681 |(% style="width:156px" %)(((
1682 AT+PLDTA=5
1683 Print last 5 entries
1684 )))|(% style="width:311px" %)(((
1685 Stop Tx and RTP events when read sensor data
1686 1 19/6/26 13:59 1 3005 sht temp=27.09 sht hum=79.5 ds temp=26.75
1687 2 19/6/26 14:04 1 3007 sht temp=26.65 sht hum=74.8 ds temp=26.43
1688 3 19/6/26 14:09 1 3007 sht temp=26.91 sht hum=77.9 ds temp=26.56
1689 4 19/6/26 14:15 1 3007 sht temp=26.93 sht hum=76.7 ds temp=26.75
1690 5 19/6/26 14:20 1 3007 sht temp=26.78 sht hum=76.6 ds temp=26.43
1691 Start Tx and RTP events
1692 OK
1693 )))
1694
1695 (% style="color:#4f81bd" %)**Downlink Command:**
1696
1697 No downlink commands for feature
1698
1699
1700 == 4.13 Clear Flash Record ==
1701
1702
1703 Feature: Clear flash storage for data log feature.
1704
1705 (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1706
1707 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:503px" %)
1708 |(% style="background-color:#4f81bd; color:white; width:157px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:137px" %)**Function**|(% style="background-color:#4f81bd; color:white; width:209px" %)**Response**
1709 |(% style="width:155px" %)AT+CLRDTA |(% style="width:134px" %)Clear date record|(% style="width:209px" %)(((
1710 Clear all stored sensor data…
1711
1712 OK
1713 )))
1714
1715 (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1716
1717 * Example: 0xA301  ~/~/  Same as AT+CLRDTA
1718
1719 == 4.14 Auto Send None-ACK messages ==
1720
1721
1722 Feature: LHT65N will wait for ACK for each uplink, If LHT65N doesn't get ACK from the IoT server, it will consider the message doesn't arrive server and store it. LHT65N keeps sending messages in normal periodically. Once LHT65N gets ACK from a server, it will consider the network is ok and start to send the not-arrive message.
1723
1724 (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1725
1726 The default factory setting is 0
1727
1728 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:367px" %)
1729 |=(% style="width: 158px;background-color:#4F81BD;color:white" %)**Command Example**|=(% style="width: 121px;background-color:#4F81BD;color:white" %)**Function**|=(% style="width: 88px;background-color:#4F81BD;color:white" %)**Response**
1730 |(% style="width:158px" %)AT+PNACKMD=1|(% style="width:118px" %)Poll None-ACK message|(% style="width:87px" %)OK
1731
1732 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1733
1734 * Example: 0x3401  ~/~/  Same as AT+PNACKMD=1
1735
1736 == 4.15 Modified WMOD command for external sensor TMP117 or DS18B20 temperature alarm(Since firmware 1.3.0) ==
1737
1738
1739 Feature: Set internal and external temperature sensor alarms.
1740
1741 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:500px" %)
1742 |=(% style="width: 250px;background-color:#4F81BD;color:white" %)**Command Example**|=(% style="width: 200px;background-color:#4F81BD;color:white" %)**Function**|=(% style="width: 50px;background-color:#4F81BD;color:white" %)**Response**
1743 |(% style="width:268px" %)AT+WMOD=parameter1,parameter2,parameter3,parameter4|(% style="width:255px" %)Set internal and external temperature sensor alarms|(% style="width:181px" %)OK
1744
1745 (% style="color:#037691" %)**AT+WMOD=parameter1,parameter2,parameter3,parameter4**
1746
1747 (% style="color:#037691" %)**Parameter 1**(%%):  Alarm mode:
1748
1749 0): Cancel
1750
1751 1): Threshold alarm
1752
1753 2): Fluctuation alarm
1754
1755 3): Sampling multiple times and uplink together
1756
1757
1758 (% style="color:#037691" %)** Parameter 2**(%%):  Sampling time. Unit: seconds, up to 255 seconds.
1759
1760 (% style="color:red" %)**Note: When the collection time is less than 60 seconds and always exceeds the set alarm threshold, the sending interval will not be the collection time, but will be sent every 60 seconds.**
1761
1762
1763 (% style="color:#037691" %) **Parameter 3 and parameter 4:**
1764
1765 **1):  If Alarm Mode is set to 1:** Parameter 3 and parameter 4 are valid, as before, they represent low temperature and high temperature.
1766
1767 Such as AT+WMOD=1,60,45,105, it means high and low temperature alarm.
1768
1769
1770 **2):  If Alarm Mode is set to 2:** Parameter 3 is valid, which represents the difference between the currently collected temperature and the last uploaded temperature.
1771
1772 Such as AT+WMOD=2,10,2,it means that it is a fluctuation alarm.
1773
1774 If the difference between the current collected temperature and the last Uplin is ±2 degrees, the alarm will be issued.
1775
1776
1777 **3): If Alarm Mode is set to 3:**
1778
1779 * (% style="color:#037691" %)**parameter1: **(%%)Set Working Mode to **Mode 3**
1780 * (% style="color:#037691" %)**parameter2:**(%%) Set the temperature sampling mode to** 1**(1:DS18B20;2:TMP117;3:** **Internal GXHT30).
1781 * (% style="color:#037691" %)**parameter3: **(%%)Sampling Interval is **60**s.
1782 * (% style="color:#037691" %)**parameter4: **(%%)When there is **20** sampling dats, Device will send these data via one uplink. (max value is 60, means max 60 sampling in one uplink)
1783 * (% style="color:#037691" %)**parameter5 & parameter6: **(%%)Temperature alarm range is **-16** to **32**°C,
1784 * (% style="color:#037691" %)**parameter7:**(%%) 1 to enable temperature alarm, **0** to disable the temperature alarm. If alarm is enabled, a data will be sent immediately  if temperate exceeds the Alarm range.
1785
1786 (% style="color:#4f81bd" %)**Downlink Command: 0xA5**
1787
1788 0xA5 00 ~-~- AT+WMOD=0.
1789
1790 0xA5 01 0A 11 94 29 04 ~-~- AT+WMOD=1,10,45,105  (AT+WMOD = second byte, third byte, fourth and fifth bytes divided by 100, sixth and seventh bytes divided by 100 )
1791
1792 0XA5 01 0A F9 C0 29 04 ~-~-AT+WMOD=1,10,-16,105(Need to convert -16 to -1600 for calculation，-1600(DEC)=FFFFFFFFFFFFF9C0(HEX)  FFFFFFFFFFFFF9C0(HEX) +10000(HEX)=F9C0(HEX))
1793
1794 0xA5 02 0A 02 ~-~- AT+WMOD=2,10,2  (AT+WMOD = second byte, third byte, fourth byte)
1795
1796 0xA5 03 01 00 3C 14 FF F0 00 20 01~-~-AT+WMOD=3,1,60,20,-16,32,1
1797
1798 0xA5 FF ~-~- After the device receives it, upload the current alarm configuration (FPORT=8). Such as 01 0A 11 94 29 04 or 02 0A 02.
1799
1800
1801 == 4.16 Get Firmware Version Info(Since V1.4.0) ==
1802
1803
1804 Feature: use downlink to get firmware version.
1805
1806 (% style="color:#4f81bd" %)**Downlink Command: 0x2601**
1807
1808 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:360px" %)
1809 |=(% style="width: 90px; background-color: rgb(79, 129, 189); color: white;" %)**Downlink Control Type**|=(% style="width: 90px; background-color: rgb(79, 129, 189); color: white;" %)**FPort**|=(% style="width: 90px; background-color: rgb(79, 129, 189); color: white;" %)**Type Code**|=(% style="width: 90px; background-color: rgb(79, 129, 189); color: white;" %)**Downlink payload size(bytes)**
1810 |(% style="width:90px" %)Get Firmware Version Info|(% style="width:90px" %)Any|(% style="width:90px" %)26|(% style="width:90px" %)2
1811
1812 Device will reply with firmware version info, device info. frequency band info. detail please check device user manual.
1813
1814 Total 7 bytes Example(**FPort=5**): [[image:image-20240605120110-2.png]]
1815
1816 (% style="color:#037691" %)**Sensor model**
1817
1818 0x0b: LHT65N
1819
1820
1821 (% style="color:#037691" %)**Firmware version**
1822
1823 firm_ver=(bytes[1]&0x0f)+'.'+(bytes[2]>>4&0x0f)+'.'+(bytes[2]&0xOf);
1824
1825 Example: 0x0140=V1.4.0
1826
1827
1828 (% style="color:#037691" %)** Frequency Band:**
1829
1830 * 0x01: EU868
1831 * 0x02: US915
1832 * 0x03: IN865
1833 * 0x04: AU915
1834 * 0x05: KZ865
1835 * 0x06: RU864
1836 * 0x07: AS923
1837 * 0x08: AS923-1
1838 * 0x09: AS923-2
1839 * 0xa0: AS923-3
1840
1841 (% style="color:#037691" %)**Subband**
1842
1843 value 0x00 ~~ 0x08
1844
1845 Example: 0xFF ~-~--> " NULL"
1846
1847
1848 (% style="color:#037691" %)**Battery**
1849
1850 Ex1:  0x0C4E(H) = 3150(D) = 3150mV =3.15V
1851
1852 Ex2:  0x0CF8(H) = 3320(D) = 3320mV =3.32V
1853
1854
1855 == 4.17 Setting LEDAlarm ==
1856
1857 Feature: Setting LEDAlarm
1858
1859 The default factory setting is 0
1860
1861 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:367px" %)
1862 |=(% style="width: 158px;background-color:#4F81BD;color:white" %)**Command Example**|=(% style="width: 121px;background-color:#4F81BD;color:white" %)**Function**|=(% style="width: 88px;background-color:#4F81BD;color:white" %)**Response**
1863 |(% style="width:158px" %)AT+LEDALARM=1|(% style="width:118px" %)Setting LEDAlarm|(% style="width:87px" %)OK
1864
1865 (% style="color:#4f81bd" %)**Downlink Command: 0x3601**
1866
1867 (% style="color:red" %)**Note: This alarm range is controlled by AT+ARTEMP. You need to set AT+WMOD=1 before use. **
1868
1869 = 5. Battery & How to replace =
1870
1871 == 5.1 Battery Type ==
1872
1873
1874 (((
1875 LHT65N is equipped with a 2400mAH Li-MnO2 (CR17505) battery . The battery is an un-rechargeable battery with low discharge rate targeting for up to 8~~10 years use. This type of battery is commonly used in IoT devices for long-term running, such as water meters.
1876 )))
1877
1878 (((
1879 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1880
1881 [[image:image-20220515075034-1.png||_mstalt="428961" height="208" width="644"]]
1882 )))
1883
1884 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1885
1886
1887 == 5.2 Replace Battery ==
1888
1889
1890 LHT65N has two screws on the back, Unscrew them, and changing the battery inside is ok. The battery is a general CR17450 battery. Any brand should be ok.
1891
1892 [[image:image-20220515075440-2.png||_mstalt="429546" height="338" width="272"]][[image:image-20220515075625-3.png||_mstalt="431574" height="193" width="257"]]
1893
1894
1895 == 5.3 Battery Life Analyze ==
1896
1897
1898 (((
1899 Dragino battery-powered products are all run in Low Power mode. User can check the guideline from this link to calculate the estimated battery life:
1900 [[https:~~/~~/www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf>>https://www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf]]
1901 )))
1902
1903
1904 (((
1905 A full detail test report for LHT65N on different frequency can be found at : [[https:~~/~~/www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0>>https://www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0]]
1906 )))
1907
1908
1909 = 6. FAQ =
1910
1911 == 6.1 How to connect to LHT65N UART interface? ==
1912
1913
1914 The LHT65N has the UART interface in its Type-C. The UART Interface can be used for
1915
1916 * Send AT Commands, and get output from LHT65N
1917 * Upgrade firmwre of LHT65N.
1918
1919 The hardware connection is: **PC <~-~-> USB to TTL Adapter <~-~-> Jump wires <~-~-> Type-C Adapter <~-~-> LHT65N**
1920
1921
1922 **Option of USB TTL adapter:**
1923
1924 * CP2101 USB TTL Adapter
1925 * CH340 USB TTL Adapter
1926 * FT232 USB TTL Adapter
1927
1928 **Option of Type-C Adapter:**
1929
1930 [[image:image-20240122103221-3.png||_mstalt="425594" height="694" width="1039"]]
1931
1932
1933 **Connection:**
1934
1935 * (% style="background-color:yellow" %)**USB to TTL GND <~-~-> LHT65N GND**
1936 * (% style="background-color:yellow" %)**USB to TTL RXD <~-~-> LHT65N TXD**
1937 * (% style="background-color:yellow" %)**USB to TTL TXD <~-~-> LHT65N RXD**
1938
1939 (((
1940
1941
1942 Connection Example:
1943
1944 [[image:1655802313617-381.png||_mstalt="293917"]]
1945
1946
1947 [[image:image-20240122092100-1.jpeg||_mstalt="467389" height="466" width="643"]]
1948
1949
1950 == 6.2 How to use AT Commands? ==
1951
1952
1953 First, Connect PC and LHT65N via USB TTL adapter as **FAQ 6.1**
1954
1955 In PC, User needs to set serial tool(such as [[**putty**>>https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to (% style="color:green" %)**9600**(%%) to access to access serial console for LHT65N. The AT commands are disable by default and need to enter password (default:(% style="color:green" %)**123456**) (%%)to active it. Timeout to input AT Command is 5 min, after 5-minute, user need to input password again. User can use AT+DISAT command to disable AT command before timeout.
1956 )))
1957
1958
1959 Input password and ATZ to activate LHT65N,As shown below:
1960
1961 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1962
1963
1964 AT Command List is as below:
1965
1966 AT+<CMD>? :  Help on <CMD>
1967
1968 AT+<CMD> :  Run <CMD>
1969
1970 AT+<CMD>=<value> :  Set the value
1971
1972 AT+<CMD>=? :  Get the value
1973
1974 AT+DEBUG:  Set more info output
1975
1976 ATZ:  Trig a reset of the MCU
1977
1978 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1979
1980 AT+DEUI:  Get or Set the Device EUI
1981
1982 AT+DADDR:  Get or Set the Device Address
1983
1984 AT+APPKEY:  Get or Set the Application Key
1985
1986 AT+NWKSKEY:  Get or Set the Network Session Key
1987
1988 AT+APPSKEY:  Get or Set the Application Session Key
1989
1990 AT+APPEUI:  Get or Set the Application EUI
1991
1992 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1993
1994 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1995
1996 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1997
1998 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1999
2000 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
2001
2002 AT+RX2FQ:  Get or Set the Rx2 window frequency
2003
2004 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
2005
2006 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
2007
2008 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
2009
2010 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
2011
2012 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
2013
2014 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
2015
2016 AT+NWKID:  Get or Set the Network ID
2017
2018 AT+FCU:  Get or Set the Frame Counter Uplink
2019
2020 AT+FCD:  Get or Set the Frame Counter Downlink
2021
2022 AT+CLASS:  Get or Set the Device Class
2023
2024 AT+JOIN:  Join network
2025
2026 AT+NJS:  Get the join status
2027
2028 AT+SENDB:  Send hexadecimal data along with the application port
2029
2030 AT+SEND:  Send text data along with the application port
2031
2032 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
2033
2034 AT+RECV:  Print last received data in raw format
2035
2036 AT+VER:  Get current image version and Frequency Band
2037
2038 AT+CFM:  Get or Set the confirmation mode (0-1)
2039
2040 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
2041
2042 AT+SNR:  Get the SNR of the last received packet
2043
2044 AT+RSSI:  Get the RSSI of the last received packet
2045
2046 AT+TDC:  Get or set the application data transmission interval in ms
2047
2048 AT+PORT:  Get or set the application port
2049
2050 AT+DISAT:  Disable AT commands
2051
2052 AT+PWORD: Set password, max 9 digits
2053
2054 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
2055
2056 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
2057
2058 AT+PDTA:  Print the sector data from start page to stop page
2059
2060 AT+PLDTA:  Print the last few sets of data
2061
2062 AT+CLRDTA:  Clear the storage, record position back to 1st
2063
2064 AT+SLEEP:  Set sleep mode
2065
2066 AT+EXT:  Get or Set external sensor model
2067
2068 AT+BAT:  Get the current battery voltage in mV
2069
2070 AT+CFG:  Print all configurations
2071
2072 AT+WMOD:  Get or Set Work Mode
2073
2074 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
2075
2076 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
2077
2078 AT+SETCNT:  Set the count at present
2079
2080 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
2081
2082 AT+RPL:  Get or set response level
2083
2084 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
2085
2086 AT+LEAPSEC:  Get or Set Leap Second
2087
2088 AT+SYNCMOD:  Get or Set time synchronization method
2089
2090 AT+SYNCTDC:  Get or set time synchronization interval in day
2091
2092 AT+PID:  Get or set the PID
2093
2094
2095 == 6.3 How to use Downlink commands? ==
2096
2097
2098 **Downlink commands:**
2099
2100
2101 (% style="color:blue" %)**TTN:**
2102
2103 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
2104
2105
2106
2107 (% style="color:blue" %)**Helium: **
2108
2109 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
2110
2111
2112
2113 (% style="color:blue" %)**Chirpstack: The downlink window will not be displayed until the network is accessed**
2114
2115
2116 [[image:image-20220615094850-6.png||_mstalt="433082"]]
2117
2118
2119 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
2120
2121
2122
2123 (% style="color:blue" %)**AWS-IOT :**
2124
2125 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
2126
2127
2128 == 6.4 How to change the uplink interval? ==
2129
2130
2131 Please see this link: [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/How%20to%20set%20the%20transmit%20time%20interval/>>url:http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20set%20the%20transmit%20time%20interval/||_mstmutation="1" style="background-color: rgb(255, 255, 255);"]]
2132
2133
2134 == 6.5 How to upgrade firmware? ==
2135
2136
2137 The firmware (% style="color:blue" %)**before V1.4**(%%) does not have wireless upgrade function, and the starting address of the firmware is **0x08000000**.
2138 (% style="color:blue" %)**Since and including V1.4**(%%), LHT65N supports wireless upgrade, and its firmware is divided into **bootloader + working firmware**. Burning bootloader selects address** 0x08000000**, and burning working firmware selects address **0x0800D000**.
2139
2140
2141 LHT65N has two types of firmware: **Firmware with bootloader** and **Firmware without bootloader**.** [[Firmware Download Link>>https://www.dropbox.com/sh/gvoto921a75q6rx/AADaaspjTtikr9X82Ma2S5w4a?dl=0]]**:
2142
2143
2144 Use UART connection to update the firmware, detailed description of UART refer to [[FAQ 6.1>>http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H6.1HowtoconnecttoLHT65NUARTinterface3F]], Connection Example:
2145
2146 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/WebHome/1655802313617-381.png?rev=1.1||alt="1655802313617-381.png"]]
2147
2148 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/WebHome/image-20240122092100-1.jpeg?width=643&height=466&rev=1.1||alt="image-20240122092100-1.jpeg"]]
2149
2150 (% style="color:red" %)**Note: To use the **(% style="color:blue" %)**TremoProgrammer **(% style="color:red" %)**the node must be put into burn mode, i.e. the USB-TTL adapter 3.3V must be connected to the BOOT_CONTROL pin of the LHT65N.**
2151
2152 * For the connection ** E2 cable <~-~-~-~-> USB-TTL adapter**:
2153
2154 (% style="background-color:yellow" %)** Port 4(Blue wire)<~-~-~-~->USB-TTL 3V3**
2155
2156 [[image:image-20240720093846-3.jpeg||height="433" width="742"]]
2157
2158 * For the connection  **USB Type-C Extender<~-~-~-~->USB-TTL adapter**:
2159
2160 (% style="background-color:yellow" %)**Pin 6<~-~-~-~->USB-TTL 3V3**
2161
2162 [[image:image-20240720093332-1.jpeg||height="378" width="644"]]
2163
2164 === 6.5.1 Burning firmware before V1.3 (including V1.3) ===
2165
2166
2167 Burning firmware prior to and including V1.3 can only be done using the [[TremoProgrammer>>https://www.dropbox.com/scl/fo/gk1rb5pnnjw4kv5m5cs0z/h?rlkey=906ouvgbvif721f9bj795vfrh&dl=0]], select the burn address: 0x08000000
2168
2169 According to the above instructions to **enter the burning mode**, re-install the battery to **reset the node**, press the ACT button LED does not light up, the node successfully entered the burning mode, **click "START".**
2170
2171 [[image:image-20240716174308-1.png||height="523" width="410"]]
2172
2173
2174 === 6.5.2 Updated firmware for V1.4 and above ===
2175
2176
2177 Updating firmware version V1.4 and above requires distinguishing whether the firmware comes with a bootloader or not.
2178
2179 * For version V1.4 and above, we ship nodes with bootloader, users can directly choose firmware without bootloader to upgrade directly. Use **TremoProgrammer** to start at address **0x0800D000**. Using **Dragino Sensor Manager Utility.exe** does not require address selection, but must use firmware without bootloader.
2180 * For nodes where the bootloader was accidentally erased, customers need to burn the bootloader and working firmware using** TremoProgrammer**.
2181
2182 The firmware of V1.4 and above updated on our official website will note whether it comes with bootloader or not, customers need to choose the appropriate update method according to the firmware type.
2183
2184
2185 ==== 6.5.2.1 Update firmware (Assume device already have bootloader) ====
2186
2187
2188 (% style="color:blue" %)**Step1 : Connect UART as per FAQ 6.1**
2189
2190 (% style="color:blue" %)**Step2 : Update follow [[Instruction for update via DraginoSensorManagerUtility.exe>>http://wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H3.2.1UpdateafirmwareviaDraginoSensorManagerUtility.exe]]. Make sure to use the firmware without bootloader.**
2191
2192
2193 (Recommanded way) OTA firmware update via wireless : **[[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/Firmware%20OTA%20Update%20for%20Sensors/>>url:http://wiki.dragino.com/xwiki/bin/view/Main/Firmware%20OTA%20Update%20for%20Sensors/]]**
2194
2195
2196 ==== 6.5.2.2 Update firmware (Assume device doesn't have bootloader) ====
2197
2198
2199 In this update method, make sure to use the firmware with bootloader , [[**Download Link**>>https://www.dropbox.com/scl/fo/9069p25416et9pp7droqx/h?rlkey=ns82ak91p7jrrjfsulhsjodg4&dl=0]]**  . **After update , device will have bootloader so can use above method( 6.5.2.1) to update.
2200
2201 (% style="color:blue" %)**Step1**(%%): Install [[TremoProgrammer>>https://www.dropbox.com/scl/fo/gk1rb5pnnjw4kv5m5cs0z/h?rlkey=906ouvgbvif721f9bj795vfrh&dl=0]]  first.
2202
2203 [[image:image-20220615170542-5.png||_mstalt="430638"]]
2204
2205
2206
2207 (% _mstmutation="1" style="color:blue" %)**Step2**(%%): Hardware Connection
2208
2209 Connect PC and LHT65N via USB TTL adapter .
2210
2211 (% style="color:red" %)**Note: Burn mode: Port4 (BOOT_CTL) of E2 cable connects 3V3 of USB-TTL.**
2212
2213 **Connection method:**
2214
2215 (% style="background-color:yellow" %)**USB-TTL GND <~-~-> Port 1 of E2 cable**
2216
2217 (% style="background-color:yellow" %)**USB-TTL 3V3 <~-~-> Port 4 of E2 cable**
2218
2219 (% style="background-color:yellow" %)**USB-TTL TXD <~-~-> Port 9 of E2 cable**
2220
2221 (% style="background-color:yellow" %)**USB-TTL RXD <~-~-> Port 5 of E2 cable**
2222
2223 [[image:image-20240122105429-4.png||_mstalt="429884" height="326" width="452"]](% style="display:none" %) [[image:image-20240122115332-5.jpeg||_mstalt="470002" height="324" width="401"]][[image:image-20240122134009-1.jpeg||_mstalt="469274" height="332" width="411"]]
2224
2225
2226 (% style="color:blue" %)**Step3: **(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
2227
2228 [[image:image-20220615171334-6.png||_mstalt="431028"]]
2229
2230
2231 **Reset node:** Short-circuit the port3(RST) of the E2 cable to GND.  /The new motherboard cancels the RST, and the **battery needs to be reinstalled** to achieve the reset effect.
2232
2233 Then click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
2234
2235
2236 When this interface appears, it indicates that the download has been completed.
2237
2238 [[image:image-20220620160723-8.png||_mstalt="430703"]]
2239
2240
2241 Finally, Disconnect Port4 of E2 cable, reset the node again (Port3 shorted GND/ /The new motherboard cancels the RST, and the **battery needs to be reinstalled** to achieve the reset effect.), and the node exits burning mode.
2242
2243
2244 == 6.6 Why can't I see the datalog information ==
2245
2246
2247 ~1. The time is not aligned, and the correct query command is not used.
2248
2249 2. Decoder error, did not parse the datalog data, the data was filtered.
2250
2251
2252 == 6.7 How can i read sensor data without LoRaWAN? For Calibration Purpose ==
2253
2254
2255 Some clients need to calibrate the sensor value in calibration Lab. In such case, Reading the data without LoRaWAN network is more convinient. To achieve this, use can use a USB Type-C Breakout board to expose the UART pins while still have the probe connected. See below. Detail Pin out please refer the FAQ of [[how to connect UART>>||anchor="H6.1HowtoconnecttoLHT65NUARTinterface3F"]]
2256
2257 [[image:image-20240122092100-1.jpeg||_mstalt="467389" height="346" width="476"]]
2258
2259
2260 After there is UART Connectio, run below commands:
2261
2262 1.** AT+NJM=0**   ~/~/ Set Device to ABP mode , so can works without join to LoRaWAN server.
2263
2264 2.** AT+GETSENSORVALUE=0**  ~/~/The serial port gets the reading of the current sensor.
2265
2266 Example output:
2267
2268 [[image:image-20240128093852-1.png||_mstalt="431912" height="235" width="552"]]
2269
2270
2271 = 7. Order Info =
2272
2273
2274 Part Number: (% style="color:#4f81bd" %)** LHT65N-XX-YY**
2275
2276 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
2277
2278 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
2279 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
2280 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
2281 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
2282 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
2283 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**US915**(%%): LoRaWAN US915 band
2284 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
2285 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
2286
2287 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
2288
2289 * (% style="color:red" %)**E3**(%%): External Temperature Probe
2290
2291 = 8. Packing Info =
2292
2293
2294 **Package Includes**:
2295
2296 * LHT65N Temperature & Humidity Sensor x 1
2297 * Optional external sensor
2298
2299 = 9. Reference material =
2300
2301
2302 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0]]
2303
2304 = 10. FCC Warning =
2305
2306
2307 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
2308
2309 (1) This device may not cause harmful interference;
2310
2311 (2) this device must accept any interference received, including interference that may cause undesired operation.