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

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