Skip to Content
Version 338.2 by Xiaoling on 2025/04/10 11:27
Show last authors
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
1366 = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1367
1368
1369 (((
1370 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
1371 )))
1372
1373 * (((
1374 AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
1375 )))
1376
1377 * (((
1378 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
1379 )))
1380
1381 (((
1382 There are two kinds of commands to configure LHT65N, they are:
1383 )))
1384
1385 * (((
1386 (% style="color:#4f81bd" %)**General Commands**.
1387 )))
1388
1389 (((
1390 These commands are to configure:
1391 )))
1392
1393 1. (((
1394 General system settings like: uplink interval.
1395 )))
1396 1. (((
1397 LoRaWAN protocol & radio-related commands.
1398 )))
1399
1400 (((
1401 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]]
1402 )))
1403
1404 * (((
1405 (% style="color:#4f81bd" %)**Commands special design for LHT65N**
1406 )))
1407
1408 (((
1409 These commands are only valid for LHT65N, as below:
1410 )))
1411
1412
1413 == 4.1 Set Transmit Interval Time ==
1414
1415
1416 Feature: Change LoRaWAN End Node Transmit Interval.
1417
1418
1419 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
1420
1421 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:501px" %)
1422 |(% 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**
1423 |(% style="width:155px" %)AT+TDC=?|(% style="width:162px" %)Show current transmit Interval|(% style="width:177px" %)30000 OK the interval is 30000ms = 30s
1424 |(% style="width:155px" %)AT+TDC=60000|(% style="width:162px" %)Set Transmit Interval|(% style="width:177px" %)OK Set transmit interval to 60000ms = 60 seconds
1425
1426 (% style="color:#4f81bd" %)**Downlink Command: 0x01**
1427
1428 Format: Command Code (0x01) followed by 3 bytes time value.
1429
1430 If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.
1431
1432 * **Example 1**: Downlink Payload: 0100001E  ~/~/ Set Transmit Interval (TDC) = 30 seconds
1433
1434 * **Example 2**: Downlink Payload: 0100003C  ~/~/ Set Transmit Interval (TDC) = 60 seconds
1435
1436 == 4.2 Set External Sensor Mode ==
1437
1438
1439 Feature: Change External Sensor Mode.
1440
1441 (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1442
1443 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:500.222px" %)
1444 |(% 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**
1445 |(% style="width:155px" %)AT+EXT=?|(% style="width:151px" %)Get current external sensor mode|(% style="width:158px" %)1 OK External Sensor mode =1
1446 |(% style="width:155px" %)AT+EXT=1|(% colspan="2" rowspan="1" style="width:309px" %)Set external sensor mode to 1|(% style="width:126px" %)A201
1447 |(% style="width:155px" %)AT+EXT=9|(% colspan="2" rowspan="1" style="width:309px" %)Set to external DS18B20 with timestamp|(% style="width:126px" %)A209
1448 |(% 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
1449 |(% 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
1450 |(% 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
1451 |(% 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
1452 |(% 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
1453 |(% 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
1454
1455 **Response**
1456
1457 (% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1458
1459 Total bytes: 2 ~~ 5 bytes
1460
1461 **Example:**
1462
1463 * 0xA201: Set external sensor type to E1
1464
1465 * 0xA209: Same as AT+EXT=9
1466
1467 * 0xA20702003c: Same as AT+SETCNT=60
1468
1469 == 4.3 Enable/Disable uplink DS18B20 Temperature probe ID ==
1470
1471
1472 **Feature**: If PID is enabled, LHT65N will send the DS18B20 temperature probe ID on:
1473
1474 * First Packet after OTAA Join
1475 * Every 24 hours since the first packet.
1476
1477 PID is default set to disable (0)
1478
1479 (% style="color:red" %)**Notice: This feature only valid when EXT=1 or EXt=9**
1480
1481 (% style="color:#4f81bd" %)**AT Command:**
1482
1483 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:381px" %)
1484 |(% 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**
1485 |(% style="width:155px" %)AT+PID=1|(% style="width:136px" %)Enable PID uplink|(% style="width:86px" %)OK
1486
1487 (% style="color:#4f81bd" %)**Downlink Command:**
1488
1489 * **0xA800**  **~-~->** AT+PID=0
1490 * **0xA801**     **~-~->** AT+PID=1
1491
1492 == 4.4 Set Password ==
1493
1494
1495 Feature: Set device password, max 9 digits
1496
1497 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1498
1499 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:372px" %)
1500 |(% 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**
1501 |(% style="width:155px" %)AT+PWORD=?|(% style="width:124px" %)Show password|(% style="width:86px" %)(((
1502 123456
1503
1504 OK
1505 )))
1506 |(% style="width:155px" %)AT+PWORD=999999|(% style="width:124px" %)Set password|(% style="width:86px" %)OK
1507
1508 (% style="color:#4f81bd" %)**Downlink Command:**
1509
1510 No downlink command for this feature.
1511
1512
1513 == 4.5 Quit AT Command ==
1514
1515
1516 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1517
1518 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1519
1520 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:433px" %)
1521 |(% 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**
1522 |(% style="width:155px" %)AT+DISAT|(% style="width:191px" %)Quit AT Commands mode|(% style="width:86px" %)OK
1523
1524 (% style="color:#4f81bd" %)**Downlink Command:**
1525
1526 No downlink command for this feature.
1527
1528
1529 == 4.6 Set to sleep mode ==
1530
1531
1532 Feature: Set device to sleep mode
1533
1534 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1535 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1536
1537 (% style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1538
1539 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:513px" %)
1540 |(% 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**
1541 |(% style="width:155px" %)AT+SLEEP|(% style="width:139px" %)Set to sleep mode|(% style="width:213px" %)(((
1542 Clear all stored sensor data…
1543
1544 OK
1545 )))
1546
1547 (% style="color:#4f81bd" %)**Downlink Command:**
1548
1549 * There is no downlink command to set to Sleep mode.
1550
1551 == 4.7 Set system time ==
1552
1553
1554 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1555
1556 (% style="color:#4f81bd" %)**AT Command:**
1557
1558 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:506px" %)
1559 |(% style="background-color:#4f81bd; color:white; width:188px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:318px" %)**Function**
1560 |(% style="width:154px" %)AT+TIMESTAMP=1611104352|(% style="width:285px" %)(((
1561 OK
1562
1563 Set System time to 2021-01-20 00:59:12
1564 )))
1565
1566 (% style="color:#4f81bd" %)**Downlink Command:**
1567
1568 0x306007806000  ~/~/  Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1569
1570
1571 == 4.8 Set Time Sync Mode ==
1572
1573
1574 (((
1575 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1576 )))
1577
1578 (((
1579 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.
1580 )))
1581
1582 (% style="color:#4f81bd" %)**AT Command:**
1583
1584 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:475px" %)
1585 |(% style="background-color:#4f81bd; color:white; width:158px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:317px" %)**Function**
1586 |(% style="width:156px" %)AT+SYNCMOD=1|(% style="width:315px" %)Enable Sync system time via LoRaWAN MAC Command (DeviceTimeReq)
1587
1588 (% style="color:#4f81bd" %)**Downlink Command:**
1589
1590 0x28 01  ~/~/  Same As AT+SYNCMOD=1
1591 0x28 00  ~/~/  Same As AT+SYNCMOD=0
1592
1593
1594 == 4.9 Set Time Sync Interval ==
1595
1596
1597 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1598
1599 (% style="color:#4f81bd" %)**AT Command:**
1600
1601 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:472px" %)
1602 |(% style="background-color:#4f81bd; color:white; width:158px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:314px" %)**Function**
1603 |(% style="width:156px" %)AT+SYNCTDC=0x0A |(% style="width:311px" %)Set SYNCTDC to 10 (0x0A), so the sync time is 10 days.
1604
1605 (% style="color:#4f81bd" %)**Downlink Command:**
1606
1607 **0x29 0A**  ~/~/ Same as AT+SYNCTDC=0x0A
1608
1609
1610 == 4.10 Get data ==
1611
1612
1613 Feature: Get the current sensor data.
1614
1615 (% style="color:#4f81bd" %)**AT Command:**
1616
1617 * **AT+GETSENSORVALUE=0**      ~/~/ The serial port gets the reading of the current sensor
1618 * **AT+GETSENSORVALUE=1**      ~/~/ The serial port gets the current sensor reading and uploads it.
1619
1620 == 4.11 Print data entries base on page ==
1621
1622
1623 Feature: Print the sector data from start page to stop page (max is 416 pages).
1624
1625 (% style="color:#4f81bd" %)**AT Command: AT+PDTA**
1626
1627 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
1628 |(% style="background-color:#4f81bd; color:white; width:158px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:352px" %)**Function**
1629 |(% style="width:156px" %)(((
1630 AT+PDTA=1,3
1631 Print page 1 to 3
1632 )))|(% style="width:311px" %)(((
1633 8019500 19/6/26 16:48 1 2992 sht temp=28.21 sht hum=71.5 ds temp=27.31
1634 8019510 19/6/26 16:53 1 2994 sht temp=27.64 sht hum=69.3 ds temp=26.93
1635 8019520 19/6/26 16:58 1 2996 sht temp=28.39 sht hum=72.0 ds temp=27.06
1636 8019530 19/6/26 17:03 1 2996 sht temp=27.97 sht hum=70.4 ds temp=27.12
1637 8019540 19/6/26 17:08 1 2996 sht temp=27.80 sht hum=72.9 ds temp=27.06
1638 8019550 19/6/26 17:13 1 2998 sht temp=27.30 sht hum=72.4 ds temp=26.68
1639 8019560 19/6/26 17:22 1 2992 sht temp=26.27 sht hum=62.3 ds temp=26.56
1640 8019570
1641 8019580
1642 8019590
1643 80195A0
1644 80195B0
1645 80195C0
1646 80195D0
1647 80195E0
1648 80195F0
1649
1650 OK
1651 )))
1652
1653 (% style="color:#4f81bd" %)**Downlink Command:**
1654
1655 No downlink commands for feature
1656
1657
1658 == 4.12 Print last few data entries ==
1659
1660
1661 Feature: Print the last few data entries
1662
1663 (% style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1664
1665 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
1666 |(% style="background-color:#4f81bd; color:white; width:158px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:352px" %)**Function**
1667 |(% style="width:156px" %)(((
1668 AT+PLDTA=5
1669 Print last 5 entries
1670 )))|(% style="width:311px" %)(((
1671 Stop Tx and RTP events when read sensor data
1672 1 19/6/26 13:59 1 3005 sht temp=27.09 sht hum=79.5 ds temp=26.75
1673 2 19/6/26 14:04 1 3007 sht temp=26.65 sht hum=74.8 ds temp=26.43
1674 3 19/6/26 14:09 1 3007 sht temp=26.91 sht hum=77.9 ds temp=26.56
1675 4 19/6/26 14:15 1 3007 sht temp=26.93 sht hum=76.7 ds temp=26.75
1676 5 19/6/26 14:20 1 3007 sht temp=26.78 sht hum=76.6 ds temp=26.43
1677 Start Tx and RTP events
1678 OK
1679 )))
1680
1681 (% style="color:#4f81bd" %)**Downlink Command:**
1682
1683 No downlink commands for feature
1684
1685
1686 == 4.13 Clear Flash Record ==
1687
1688
1689 Feature: Clear flash storage for data log feature.
1690
1691 (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1692
1693 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:503px" %)
1694 |(% 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**
1695 |(% style="width:155px" %)AT+CLRDTA |(% style="width:134px" %)Clear date record|(% style="width:209px" %)(((
1696 Clear all stored sensor data…
1697
1698 OK
1699 )))
1700
1701 (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1702
1703 * Example: 0xA301  ~/~/  Same as AT+CLRDTA
1704
1705 == 4.14 Auto Send None-ACK messages ==
1706
1707
1708 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.
1709
1710 (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1711
1712 The default factory setting is 0
1713
1714 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:367px" %)
1715 |=(% 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**
1716 |(% style="width:158px" %)AT+PNACKMD=1|(% style="width:118px" %)Poll None-ACK message|(% style="width:87px" %)OK
1717
1718 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1719
1720 * Example: 0x3401  ~/~/  Same as AT+PNACKMD=1
1721
1722 == 4.15 Modified WMOD command for external sensor TMP117 or DS18B20 temperature alarm(Since firmware 1.3.0) ==
1723
1724
1725 Feature: Set internal and external temperature sensor alarms.
1726
1727 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:500px" %)
1728 |=(% 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**
1729 |(% style="width:268px" %)AT+WMOD=parameter1,parameter2,parameter3,parameter4|(% style="width:255px" %)Set internal and external temperature sensor alarms|(% style="width:181px" %)OK
1730
1731 (% style="color:#037691" %)**AT+WMOD=parameter1,parameter2,parameter3,parameter4**
1732
1733 (% style="color:#037691" %)**Parameter 1**(%%):  Alarm mode:
1734
1735 0): Cancel
1736
1737 1): Threshold alarm
1738
1739 2): Fluctuation alarm
1740
1741 3): Sampling multiple times and uplink together
1742
1743
1744 (% style="color:#037691" %)** Parameter 2**(%%):  Sampling time. Unit: seconds, up to 255 seconds.
1745
1746 (% 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.**
1747
1748
1749 (% style="color:#037691" %) **Parameter 3 and parameter 4:**
1750
1751 **1):  If Alarm Mode is set to 1:** Parameter 3 and parameter 4 are valid, as before, they represent low temperature and high temperature.
1752
1753 Such as AT+WMOD=1,60,45,105, it means high and low temperature alarm.
1754
1755
1756 **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.
1757
1758 Such as AT+WMOD=2,10,2,it means that it is a fluctuation alarm.
1759
1760 If the difference between the current collected temperature and the last Uplin is ±2 degrees, the alarm will be issued.
1761
1762
1763 **3): If Alarm Mode is set to 3:**
1764
1765 * (% style="color:#037691" %)**parameter1: **(%%)Set Working Mode to **Mode 3**
1766 * (% style="color:#037691" %)**parameter2:**(%%) Set the temperature sampling mode to** 1**(1:DS18B20;2:TMP117;3:** **Internal GXHT30).
1767 * (% style="color:#037691" %)**parameter3: **(%%)Sampling Interval is **60**s.
1768 * (% 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)
1769 * (% style="color:#037691" %)**parameter5 & parameter6: **(%%)Temperature alarm range is **-16** to **32**°C,
1770 * (% 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.
1771
1772 (% style="color:#4f81bd" %)**Downlink Command: 0xA5**
1773
1774 0xA5 00 ~-~- AT+WMOD=0.
1775
1776 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 )
1777
1778 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))
1779
1780 0xA5 02 0A 02 ~-~- AT+WMOD=2,10,2  (AT+WMOD = second byte, third byte, fourth byte)
1781
1782 0xA5 03 01 00 3C 14 FF F0 00 20 01~-~-AT+WMOD=3,1,60,20,-16,32,1
1783
1784 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.
1785
1786
1787 == 4.16 Get Firmware Version Info(Since V1.4.0) ==
1788
1789
1790 Feature: use downlink to get firmware version.
1791
1792 (% style="color:#4f81bd" %)**Downlink Command: 0x2601**
1793
1794 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:360px" %)
1795 |=(% 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)**
1796 |(% style="width:90px" %)Get Firmware Version Info|(% style="width:90px" %)Any|(% style="width:90px" %)26|(% style="width:90px" %)2
1797
1798 Device will reply with firmware version info, device info. frequency band info. detail please check device user manual.
1799
1800 Total 7 bytes Example(**FPort=5**): [[image:image-20240605120110-2.png]]
1801
1802 (% style="color:#037691" %)**Sensor model**
1803
1804 0x0b: LHT65N
1805
1806
1807 (% style="color:#037691" %)**Firmware version**
1808
1809 firm_ver=(bytes[1]&0x0f)+'.'+(bytes[2]>>4&0x0f)+'.'+(bytes[2]&0xOf);
1810
1811 Example: 0x0140=V1.4.0
1812
1813
1814 (% style="color:#037691" %)** Frequency Band:**
1815
1816 * 0x01: EU868
1817 * 0x02: US915
1818 * 0x03: IN865
1819 * 0x04: AU915
1820 * 0x05: KZ865
1821 * 0x06: RU864
1822 * 0x07: AS923
1823 * 0x08: AS923-1
1824 * 0x09: AS923-2
1825 * 0xa0: AS923-3
1826
1827 (% style="color:#037691" %)**Subband**
1828
1829 value 0x00 ~~ 0x08
1830
1831 Example: 0xFF ~-~--> " NULL"
1832
1833
1834 (% style="color:#037691" %)**Battery**
1835
1836 Ex1:  0x0C4E(H) = 3150(D) = 3150mV =3.15V
1837
1838 Ex2:  0x0CF8(H) = 3320(D) = 3320mV =3.32V
1839
1840
1841 == 4.17 Setting LEDAlarm ==
1842
1843 Feature: Setting LEDAlarm
1844
1845 The default factory setting is 0
1846
1847 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:367px" %)
1848 |=(% 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**
1849 |(% style="width:158px" %)AT+LEDALARM=1|(% style="width:118px" %)Setting LEDAlarm|(% style="width:87px" %)OK
1850
1851 (% style="color:#4f81bd" %)**Downlink Command: 0x3601**
1852
1853 (% style="color:red" %)**Note: This alarm range is controlled by AT+ARTEMP. You need to set AT+WMOD=1 before use. **
1854
1855 = 5. Battery & How to replace =
1856
1857 == 5.1 Battery Type ==
1858
1859
1860 (((
1861 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.
1862 )))
1863
1864 (((
1865 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1866
1867 [[image:image-20220515075034-1.png||_mstalt="428961" height="208" width="644"]]
1868 )))
1869
1870 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1871
1872
1873 == 5.2 Replace Battery ==
1874
1875
1876 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.
1877
1878 [[image:image-20220515075440-2.png||_mstalt="429546" height="338" width="272"]][[image:image-20220515075625-3.png||_mstalt="431574" height="193" width="257"]]
1879
1880
1881 == 5.3 Battery Life Analyze ==
1882
1883
1884 (((
1885 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:
1886 [[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]]
1887 )))
1888
1889
1890 (((
1891 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]]
1892 )))
1893
1894
1895 = 6. FAQ =
1896
1897 == 6.1 How to connect to LHT65N UART interface? ==
1898
1899
1900 The LHT65N has the UART interface in its Type-C. The UART Interface can be used for
1901
1902 * Send AT Commands, and get output from LHT65N
1903 * Upgrade firmwre of LHT65N.
1904
1905 The hardware connection is: **PC <~-~-> USB to TTL Adapter <~-~-> Jump wires <~-~-> Type-C Adapter <~-~-> LHT65N**
1906
1907
1908 **Option of USB TTL adapter:**
1909
1910 * CP2101 USB TTL Adapter
1911 * CH340 USB TTL Adapter
1912 * FT232 USB TTL Adapter
1913
1914 **Option of Type-C Adapter:**
1915
1916 [[image:image-20240122103221-3.png||_mstalt="425594" height="694" width="1039"]]
1917
1918
1919 **Connection:**
1920
1921 * (% style="background-color:yellow" %)**USB to TTL GND <~-~-> LHT65N GND**
1922 * (% style="background-color:yellow" %)**USB to TTL RXD <~-~-> LHT65N TXD**
1923 * (% style="background-color:yellow" %)**USB to TTL TXD <~-~-> LHT65N RXD**
1924
1925 (((
1926
1927
1928 Connection Example:
1929
1930 [[image:1655802313617-381.png||_mstalt="293917"]]
1931
1932
1933 [[image:image-20240122092100-1.jpeg||_mstalt="467389" height="466" width="643"]]
1934
1935
1936 == 6.2 How to use AT Commands? ==
1937
1938
1939 First, Connect PC and LHT65N via USB TTL adapter as **FAQ 6.1**
1940
1941 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.
1942 )))
1943
1944
1945 Input password and ATZ to activate LHT65N,As shown below:
1946
1947 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1948
1949
1950 AT Command List is as below:
1951
1952 AT+<CMD>? :  Help on <CMD>
1953
1954 AT+<CMD> :  Run <CMD>
1955
1956 AT+<CMD>=<value> :  Set the value
1957
1958 AT+<CMD>=? :  Get the value
1959
1960 AT+DEBUG:  Set more info output
1961
1962 ATZ:  Trig a reset of the MCU
1963
1964 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1965
1966 AT+DEUI:  Get or Set the Device EUI
1967
1968 AT+DADDR:  Get or Set the Device Address
1969
1970 AT+APPKEY:  Get or Set the Application Key
1971
1972 AT+NWKSKEY:  Get or Set the Network Session Key
1973
1974 AT+APPSKEY:  Get or Set the Application Session Key
1975
1976 AT+APPEUI:  Get or Set the Application EUI
1977
1978 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1979
1980 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1981
1982 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1983
1984 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1985
1986 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1987
1988 AT+RX2FQ:  Get or Set the Rx2 window frequency
1989
1990 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1991
1992 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1993
1994 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1995
1996 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1997
1998 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1999
2000 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
2001
2002 AT+NWKID:  Get or Set the Network ID
2003
2004 AT+FCU:  Get or Set the Frame Counter Uplink
2005
2006 AT+FCD:  Get or Set the Frame Counter Downlink
2007
2008 AT+CLASS:  Get or Set the Device Class
2009
2010 AT+JOIN:  Join network
2011
2012 AT+NJS:  Get the join status
2013
2014 AT+SENDB:  Send hexadecimal data along with the application port
2015
2016 AT+SEND:  Send text data along with the application port
2017
2018 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
2019
2020 AT+RECV:  Print last received data in raw format
2021
2022 AT+VER:  Get current image version and Frequency Band
2023
2024 AT+CFM:  Get or Set the confirmation mode (0-1)
2025
2026 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
2027
2028 AT+SNR:  Get the SNR of the last received packet
2029
2030 AT+RSSI:  Get the RSSI of the last received packet
2031
2032 AT+TDC:  Get or set the application data transmission interval in ms
2033
2034 AT+PORT:  Get or set the application port
2035
2036 AT+DISAT:  Disable AT commands
2037
2038 AT+PWORD: Set password, max 9 digits
2039
2040 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
2041
2042 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
2043
2044 AT+PDTA:  Print the sector data from start page to stop page
2045
2046 AT+PLDTA:  Print the last few sets of data
2047
2048 AT+CLRDTA:  Clear the storage, record position back to 1st
2049
2050 AT+SLEEP:  Set sleep mode
2051
2052 AT+EXT:  Get or Set external sensor model
2053
2054 AT+BAT:  Get the current battery voltage in mV
2055
2056 AT+CFG:  Print all configurations
2057
2058 AT+WMOD:  Get or Set Work Mode
2059
2060 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
2061
2062 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
2063
2064 AT+SETCNT:  Set the count at present
2065
2066 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
2067
2068 AT+RPL:  Get or set response level
2069
2070 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
2071
2072 AT+LEAPSEC:  Get or Set Leap Second
2073
2074 AT+SYNCMOD:  Get or Set time synchronization method
2075
2076 AT+SYNCTDC:  Get or set time synchronization interval in day
2077
2078 AT+PID:  Get or set the PID
2079
2080
2081 == 6.3 How to use Downlink commands? ==
2082
2083
2084 **Downlink commands:**
2085
2086
2087 (% style="color:blue" %)**TTN:**
2088
2089 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
2090
2091
2092
2093 (% style="color:blue" %)**Helium: **
2094
2095 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
2096
2097
2098
2099 (% style="color:blue" %)**Chirpstack: The downlink window will not be displayed until the network is accessed**
2100
2101
2102 [[image:image-20220615094850-6.png||_mstalt="433082"]]
2103
2104
2105 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
2106
2107
2108
2109 (% style="color:blue" %)**AWS-IOT :**
2110
2111 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
2112
2113
2114 == 6.4 How to change the uplink interval? ==
2115
2116
2117 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);"]]
2118
2119
2120 == 6.5 How to upgrade firmware? ==
2121
2122
2123 The firmware (% style="color:blue" %)**before V1.4**(%%) does not have wireless upgrade function, and the starting address of the firmware is **0x08000000**.
2124 (% 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**.
2125
2126
2127 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]]**:
2128
2129
2130 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:
2131
2132 [[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"]]
2133
2134 [[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"]]
2135
2136 (% 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.**
2137
2138 * For the connection ** E2 cable <~-~-~-~-> USB-TTL adapter**:
2139
2140 (% style="background-color:yellow" %)** Port 4(Blue wire)<~-~-~-~->USB-TTL 3V3**
2141
2142 [[image:image-20240720093846-3.jpeg||height="433" width="742"]]
2143
2144 * For the connection  **USB Type-C Extender<~-~-~-~->USB-TTL adapter**:
2145
2146 (% style="background-color:yellow" %)**Pin 6<~-~-~-~->USB-TTL 3V3**
2147
2148 [[image:image-20240720093332-1.jpeg||height="378" width="644"]]
2149
2150 === 6.5.1 Burning firmware before V1.3 (including V1.3) ===
2151
2152
2153 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
2154
2155 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".**
2156
2157 [[image:image-20240716174308-1.png||height="523" width="410"]]
2158
2159
2160 === 6.5.2 Updated firmware for V1.4 and above ===
2161
2162
2163 Updating firmware version V1.4 and above requires distinguishing whether the firmware comes with a bootloader or not.
2164
2165 * 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.
2166 * For nodes where the bootloader was accidentally erased, customers need to burn the bootloader and working firmware using** TremoProgrammer**.
2167
2168 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.
2169
2170
2171 ==== 6.5.2.1 Update firmware (Assume device already have bootloader) ====
2172
2173
2174 (% style="color:blue" %)**Step1 : Connect UART as per FAQ 6.1**
2175
2176 (% 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.**
2177
2178
2179 (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/]]**
2180
2181
2182 ==== 6.5.2.2 Update firmware (Assume device doesn't have bootloader) ====
2183
2184
2185 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.
2186
2187 (% style="color:blue" %)**Step1**(%%): Install [[TremoProgrammer>>https://www.dropbox.com/scl/fo/gk1rb5pnnjw4kv5m5cs0z/h?rlkey=906ouvgbvif721f9bj795vfrh&dl=0]]  first.
2188
2189 [[image:image-20220615170542-5.png||_mstalt="430638"]]
2190
2191
2192
2193 (% _mstmutation="1" style="color:blue" %)**Step2**(%%): Hardware Connection
2194
2195 Connect PC and LHT65N via USB TTL adapter .
2196
2197 (% style="color:red" %)**Note: Burn mode: Port4 (BOOT_CTL) of E2 cable connects 3V3 of USB-TTL.**
2198
2199 **Connection method:**
2200
2201 (% style="background-color:yellow" %)**USB-TTL GND <~-~-> Port 1 of E2 cable**
2202
2203 (% style="background-color:yellow" %)**USB-TTL 3V3 <~-~-> Port 4 of E2 cable**
2204
2205 (% style="background-color:yellow" %)**USB-TTL TXD <~-~-> Port 9 of E2 cable**
2206
2207 (% style="background-color:yellow" %)**USB-TTL RXD <~-~-> Port 5 of E2 cable**
2208
2209 [[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"]]
2210
2211
2212 (% style="color:blue" %)**Step3: **(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
2213
2214 [[image:image-20220615171334-6.png||_mstalt="431028"]]
2215
2216
2217 **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.
2218
2219 Then click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
2220
2221
2222 When this interface appears, it indicates that the download has been completed.
2223
2224 [[image:image-20220620160723-8.png||_mstalt="430703"]]
2225
2226
2227 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.
2228
2229
2230 == 6.6 Why can't I see the datalog information ==
2231
2232
2233 ~1. The time is not aligned, and the correct query command is not used.
2234
2235 2. Decoder error, did not parse the datalog data, the data was filtered.
2236
2237
2238 == 6.7 How can i read sensor data without LoRaWAN? For Calibration Purpose ==
2239
2240
2241 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"]]
2242
2243 [[image:image-20240122092100-1.jpeg||_mstalt="467389" height="346" width="476"]]
2244
2245
2246 After there is UART Connectio, run below commands:
2247
2248 1.** AT+NJM=0**   ~/~/ Set Device to ABP mode , so can works without join to LoRaWAN server.
2249
2250 2.** AT+GETSENSORVALUE=0**  ~/~/The serial port gets the reading of the current sensor.
2251
2252 Example output:
2253
2254 [[image:image-20240128093852-1.png||_mstalt="431912" height="235" width="552"]]
2255
2256
2257 = 7. Order Info =
2258
2259
2260 Part Number: (% style="color:#4f81bd" %)** LHT65N-XX-YY**
2261
2262 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
2263
2264 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
2265 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
2266 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
2267 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
2268 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
2269 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**US915**(%%): LoRaWAN US915 band
2270 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
2271 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
2272
2273 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
2274
2275 * (% style="color:red" %)**E3**(%%): External Temperature Probe
2276
2277 = 8. Packing Info =
2278
2279
2280 **Package Includes**:
2281
2282 * LHT65N Temperature & Humidity Sensor x 1
2283 * Optional external sensor
2284
2285 = 9. Reference material =
2286
2287
2288 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0]]
2289
2290 = 10. FCC Warning =
2291
2292
2293 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
2294
2295 (1) This device may not cause harmful interference;
2296
2297 (2) this device must accept any interference received, including interference that may cause undesired operation.