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Version 344.1 by Xiaoling on 2025/04/18 14:15
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13 **Table of Contents:**
14
15 {{toc/}}
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19
20
21 = 1. Introduction =
22
23 == 1.1 What is LHT65N/S LoRaWAN Temperature & Humidity Sensor ==
24
25
26 (((
27 The Dragino (% style="color:blue; font-weight:bold" %)**LHT65N/S**(% style="color:blue" %)** 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.**
28 )))
29
30 (((
31 The LHT65N/S 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.
32 )))
33
34 (((
35 LHT65N/S has a (% style="color:blue" %)**built-in 2400mAh non-chargeable battery**(%%) which can be used for up to 10 years*.
36 )))
37
38 (((
39 LHT65N/S is full compatible with LoRaWAN v1.0.3 Class A protocol, it can work with a standard LoRaWAN gateway.
40 )))
41
42 (((
43 LHT65N/S 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.
44 )))
45
46 (((
47 *The actual battery life depends on how often to send data, please see the battery analyzer chapter.
48 )))
49
50
51 == 1.2 Features ==
52
53
54 * LoRaWAN v1.0.3 Class A protocol
55 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915
56 * AT Commands to change parameters
57 * Remote configure parameters via LoRaWAN Downlink
58 * Firmware upgradeable via program port
59 * Built-in 2400mAh battery for up to 10 years of use.
60 * Built-in Temperature & Humidity sensor
61 * Optional External Sensors
62 * Tri-color LED to indicate working status
63 * Datalog feature (Max 3328 records)
64
65 == 1.3 Specification ==
66
67
68 (% style="color:#037691" %)**Built-in Temperature Sensor:**
69
70 * Resolution: 0.01 °C
71 * Accuracy Tolerance : Typ ±0.3 °C
72 * Long Term Drift: < 0.02 °C/yr
73 * Operating Range: -40 ~~ 85 °C
74
75 (% style="color:#037691" %)**Built-in Humidity Sensor:**
76
77 * Resolution: 0.04 %RH
78 * Accuracy Tolerance : Typ ±3 %RH
79 * Long Term Drift: < 0.25 RH/yr
80 * Operating Range: 0 ~~ 96 %RH
81
82 (% style="color:#037691" %)**External Temperature Sensor:**
83
84 * Resolution: 0.0625 °C
85 * ±0.5°C accuracy from -10°C to +85°C
86 * ±2°C accuracy from -55°C to +125°C
87 * Operating Range: -55 °C ~~ 125 °C
88
89 = 2. Connect LHT65N/S to IoT Server =
90
91 == 2.1 How does LHT65N/S work? ==
92
93
94 (((
95 LHT65N/S is configured as LoRaWAN OTAA Class A mode by default. Each LHT65N/S is shipped with a worldwide unique set of OTAA keys. To use LHT65N/S in a LoRaWAN network, first, we need to put the OTAA keys in LoRaWAN Network Server and then activate LHT65N/S.
96 )))
97
98 (((
99 If LHT65N/S is under the coverage of this LoRaWAN network. LHT65N/S can join the LoRaWAN network automatically. After successfully joining, LHT65N/S 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.
100 )))
101
102
103 == 2.2 How to Activate LHT65N/S? ==
104
105
106 (((
107 The LHT65N/S has two working modes:
108 )))
109
110 * (((
111 (% style="color:blue" %)**Deep Sleep Mode**(%%): LHT65N/S doesn't have any LoRaWAN activation. This mode is used for storage and shipping to save battery life.
112 )))
113 * (((
114 (% style="color:blue" %)**Working Mode**(%%):  In this mode, LHT65N/S 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/S has the same power consumption as Deep Sleep mode. 
115 )))
116
117 (((
118 The LHT65N/S is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
119 )))
120
121 [[image:image-20230717144740-2.png||_mstalt="430794" height="391" width="267"]]
122
123 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
124 |=(% 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**
125 |(% 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" %)(((
126 If LHT65N/S is already Joined to rhe LoRaWAN network, LHT65N/S will send an uplink packet, if LHT65N/S has external sensor connected,(% style="color:blue" %)**Blue led** (%%)will blink once. If LHT65N/S has not external sensor, (% style="color:red" %)**Red led**(%%) will blink once.
127 )))
128 |(% 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" %)(((
129 (% style="background-color:#f2f2f2; color:green" %)**Green led**(%%) will fast blink 5 times, LHT65N/S will enter working mode and start to JOIN LoRaWAN network.
130 (% style="background-color:#f2f2f2; color:green" %)**Green led**(%%) will solidly turn on for 5 seconds after join in network.
131 )))
132 |(% 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/S is in Deep Sleep Mode.
133
134 == 2.3 Example to join LoRaWAN network ==
135
136
137 (% class="wikigeneratedid" %)
138 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.
139
140 (% class="wikigeneratedid" %)
141 [[image:image-20220522232442-1.png||_mstalt="427830" height="387" width="648"]]
142
143
144 (((
145 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/S. Next we need to add the LHT65N/S device in TTN V3:
146 )))
147
148
149 === 2.3.1 Step 1: Create Device on TTN ===
150
151
152 (((
153 Create a device in TTN V3 with the OTAA keys from LHT65N/S.
154 )))
155
156 (((
157 Each LHT65N/S is shipped with a sticker with its device EUI, APP Key and APP EUI as below:
158 )))
159
160 [[image:image-20230426083319-1.png||_mstalt="431106" height="258" width="556"]]
161
162 User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:
163
164 (% style="color:blue" %)**1. Create application**
165
166 [[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"]]
167
168 [[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"]]
169
170
171 (% style="color:blue" %)**2. Add devices to the created Application.**
172
173
174 [[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"]]
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-20240907111820-5.png?width=975&height=377&rev=1.1||alt="image-20240907111820-5.png"]]
177
178 (% style="color:blue" %)**3. Enter end device specifics manually.**
179
180 [[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"]]
181
182
183 [[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"]]
184
185
186 === 2.3.2 Step 2: Add decoder ===
187
188
189 In TTN, user can add a custom payload so it shows friendly reading.
190
191 Click this link to get the decoder: [[LHT65N decoder>>https://github.com/dragino/dragino-end-node-decoder/tree/main/LHT65N]].
192
193 Below is TTN screen shot
194
195 [[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"]]
196
197 [[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"]]
198
199 === 2.3.3 Step 3: Activate LHT65N/S by pressing the ACT button for more than 5 seconds. ===
200
201
202 (((
203 Use ACT button to activate LHT65N/S 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.
204 )))
205
206 [[image:image-20220522233300-8.png||_mstalt="428389" height="219" width="722"]]
207
208
209 == 2.4 Uplink Payload (Fport~=2) ==
210
211
212 (((
213 The uplink payload includes totally 11 bytes. Uplink packets use FPORT=2 and (% style="color:#4f81bd" %)**every 20 minutes**(%%) send one uplink by default.
214 )))
215
216 (((
217 After each uplink, the (% style="color:blue" %)**BLUE LED**(%%) will blink once.
218 )))
219
220 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:390px" %)
221 |=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
222 **Size(bytes)**
223 )))|=(% style="width: 30px;background-color:#4F81BD;color:white" %)(((
224 **2**
225 )))|=(% style="width: 100px;background-color:#4F81BD;color:white" %)(((
226 **2**
227 )))|=(% style="width: 100px;background-color:#4F81BD;color:white" %)(((
228 **2**
229 )))|=(% style="width: 50px;background-color:#4F81BD;color:white" %)(((
230 **1**
231 )))|=(% style="width: 50px;background-color:#4F81BD;color:white" %)(((
232 **4**
233 )))
234 |(% style="width:97px" %)(((
235 Value
236 )))|(% style="width:39px" %)(((
237 [[BAT>>||anchor="H2.4.2BAT-BatteryInfo"]]
238 )))|(% style="width:100px" %)(((
239 (((
240 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
241 )))
242 )))|(% style="width:77px" %)(((
243 (((
244 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
245 )))
246 )))|(% style="width:47px" %)(((
247 [[Ext>>||anchor="H2.4.5Ext23"]] #
248 )))|(% style="width:51px" %)(((
249 [[Ext value>>||anchor="H2.4.6Extvalue"]]
250 )))
251
252 * The First 6 bytes: has fix meanings for every LHT65N/S.
253
254 * The 7th byte (EXT #): defines the external sensor model.
255
256 * 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.)
257
258 === 2.4.1 Decoder in TTN V3 ===
259
260
261 When the uplink payload arrives TTNv3, it shows HEX format and not friendly to read. We can add LHT65N/S decoder in TTNv3 for friendly reading.
262
263 Below is the position to put the decoder and LHT65N/S decoder can be download from here: [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
264
265
266 [[image:image-20220522234118-10.png||_mstalt="451464" height="353" width="729"]]
267
268
269 === 2.4.2 BAT-Battery Info ===
270
271
272 These two bytes of BAT include the battery state and the actually voltage.
273
274 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:477px" %)
275 |=(% style="width: 69px; background-color:#4F81BD;color:white" %)(((
276 **Bit(bit)**
277 )))|=(% style="width: 253px;background-color:#4F81BD;color:white" %)[15:14]|=(% style="width: 155px;background-color:#4F81BD;color:white" %)[13:0]
278 |(% style="width:66px" %)(((
279 Value
280 )))|(% style="width:250px" %)(((
281 BAT Status
282 00(b): Ultra Low ( BAT <= 2.50v)
283 01(b): Low (2.50v <=BAT <= 2.55v)
284 10(b): OK (2.55v <= BAT <=2.65v)
285 11(b): Good (BAT >= 2.65v)
286 )))|(% style="width:152px" %)Actually BAT voltage
287
288 **(b)stands for binary**
289
290
291 [[image:image-20220522235639-1.png||_mstalt="431392" height="139" width="727"]]
292
293
294 Check the battery voltage for LHT65N/S.
295
296 * BAT status=(0Xcba4>>14)&0xFF=11 (BIN) ，very good
297
298 * Battery Voltage =0xCBA4&0x3FFF=0x0BA4=2980mV
299
300 === 2.4.3 Built-in Temperature ===
301
302
303 [[image:image-20220522235639-2.png||_mstalt="431756" height="138" width="722"]]
304
305 * Temperature:  0x0ABB/100=27.47℃
306
307 [[image:image-20220522235639-3.png||_mstalt="432120"]]
308
309 * Temperature:  (0xF5C6-65536)/100=-26.18℃
310
311 === 2.4.4 Built-in Humidity ===
312
313
314 [[image:image-20220522235639-4.png||_mstalt="432484" height="138" width="722"]]
315
316 * Humidity:    0x025C/10=60.4%
317
318 === 2.4.5 Ext # ===
319
320
321 Bytes for External Sensor:
322
323 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:425px" %)
324 |=(% style="width: 102px; background-color:#4F81BD;color:white" %)**EXT # **Value|=(% style="width: 323px;background-color:#4F81BD;color:white" %)External Sensor Type
325 |(% style="width:102px" %)0x01|(% style="width:319px" %)Sensor E3, Temperature Sensor
326 |(% style="width:102px" %)0x09|(% style="width:319px" %)Sensor E3, Temperature Sensor, Datalog Mod
327 |(% style="width:102px" %)0x06|(% style="width:319px" %)ADC Sensor(use with E2 Cable)
328 |(% style="width:102px" %)0x02|(% style="width:319px" %)TMP117 Sensor
329 |(% style="width:102px" %)0x11|(% style="width:319px" %)SHT31 Sensor
330 |(% style="width:102px" %)0x04|(% style="width:319px" %)Interrupt Mode
331 |(% style="width:102px" %)0x08|(% style="width:319px" %)Counting Mode
332 |(% style="width:102px" %)0x10|(% style="width:319px" %)E2 sensor (TMP117)with Unix Timestamp
333
334 === 2.4.6 Ext value ===
335
336 ==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
337
338
339 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:500px" %)
340 |=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
341 **Size(bytes)**
342 )))|=(% style="width: 80px;background-color:#4F81BD;color:white" %)(((
343 **2**
344 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
345 2
346 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
347 **2**
348 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
349 1
350 )))|=(% style="width: 80px;background-color:#4F81BD;color:white" %)(((
351 2
352 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
353 2
354 )))
355 |(% style="width:110px" %)(((
356 Value
357 )))|(% style="width:71px" %)(((
358 BAT & BAT Status
359 )))|(% style="width:99px" %)TempC_SHT|(% style="width:132px" %)Hum_SHT|(% style="width:54px" %)(((
360 Status & Ext
361 )))|(% style="width:64px" %)TempC_DS|(% style="width:64px" %)senseless
362
363 [[image:image-20220522235639-5.png||_mstalt="432848"]]
364
365
366 * DS18B20 temp=0x0ADD/100=27.81℃
367
368 The last 2 bytes of data are meaningless
369
370 [[image:image-20220522235639-6.png||_mstalt="433212"]]
371
372
373 * External temperature= (0xF54F-65536)/100=-27.37℃
374
375 F54F :  (F54F & 8000 == 1) , temp = (F54F - 65536)/100 = 27.37℃
376
377 （0105 & 8000：Judge whether the highest bit is 1, when the highest bit is 1, it is negative）
378
379 The last 2 bytes of data are meaningless
380
381 If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
382
383
384 ==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
385
386
387 (((
388 Timestamp mode is designed for LHT65N/S 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:
389 )))
390
391 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:480px" %)
392 |=(% style="width: 50px;background-color:#4F81BD;color:white" %)(((
393 **Size(bytes)**
394 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
395 **2**
396 )))|=(% style="width: 120px;background-color:#4F81BD;color:white" %)(((
397 **2**
398 )))|=(% style="width: 120px;background-color:#4F81BD;color:white" %)(((
399 **2**
400 )))|=(% style="width: 50px;background-color:#4F81BD;color:white" %)(((
401 **1**
402 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
403 **4**
404 )))
405 |(% style="width:110px" %)(((
406 Value
407 )))|(% style="width:71px" %)(((
408 External temperature
409 )))|(% style="width:99px" %)(((
410 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
411 )))|(% style="width:132px" %)(((
412 BAT Status & [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
413 )))|(% style="width:54px" %)(((
414 Status & Ext
415 )))|(% style="width:64px" %)(((
416 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp"]]
417 )))
418
419 * **Battery status & Built-in Humidity**
420
421 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:461px" %)
422 |=(% 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]
423 |(% style="width:67px" %)Value|(% style="width:256px" %)(((
424 BAT Status
425 00(b): Ultra Low ( BAT <= 2.50v)
426 01(b): Low  (2.50v <=BAT <= 2.55v)
427 10(b): OK   (2.55v <= BAT <=2.65v)
428 11(b): Good   (BAT >= 2.65v)
429 )))|(% style="width:132px" %)(((
430 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
431 )))
432
433 * **Status & Ext Byte**
434
435 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:500px" %)
436 |(% 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]**
437 |(% 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)
438
439 * (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
440 * (% style="color:blue" %)**Sync time OK**: (%%) 1: Set time ok，0: N/A. After time SYNC request is sent, LHT65N/S will set this bit to 0 until got the time stamp from the application server.
441 * (% style="color:blue" %)**Unix Time Request**:(%%)  1: Request server downlink Unix time, 0 : N/A. In this mode, LHT65N/S will set this bit to 1 every 10 days to request a time SYNC. (AT+SYNCMOD to set this)
442
443 ==== 2.4.6.3 Ext~=6, ADC Sensor(use with E2 Cable) ====
444
445
446 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:500px" %)
447 |=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
448 **Size(bytes)**
449 )))|=(% style="width: 80px;background-color:#4F81BD;color:white" %)(((
450 **2**
451 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
452 2
453 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
454 **2**
455 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
456 1
457 )))|=(% style="width: 80px;background-color:#4F81BD;color:white" %)(((
458 2
459 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
460 2
461 )))
462 |(% style="width:110px" %)(((
463 Value
464 )))|(% style="width:71px" %)(((
465 BAT & BAT Status
466 )))|(% style="width:99px" %)TempC_SHT|(% style="width:132px" %)Hum_SHT|(% style="width:54px" %)(((
467 Status & Ext
468 )))|(% style="width:64px" %)ADC_Value|(% style="width:64px" %)senseless
469
470 In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
471
472 be used to power the external ADC sensor; user can control the power on time for this
473
474 (% style="color:blue" %)**sensor by setting:**
475
476 **AT+EXT=6,timeout**  (% style="color:red" %)**Time to power this sensor, from 0 ~~ 65535ms**
477
478 **For example:**
479
480 AT+EXT=6,1000 will power this sensor for 1000ms before sampling the ADC value.
481
482
483 Or use **downlink command A2** to set the same.
484
485 The measuring range of the node is only about 0.1V to 1.1V The voltage resolution is about 0.24mv.
486
487 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.
488
489 [[image:image-20220628150112-1.png||_mstalt="427414" height="241" width="285"]]
490
491
492 When ADC_IN1 pin is connected to GND or suspended, ADC value is 0
493
494 [[image:image-20220628150714-4.png||_mstalt="431054"]]
495
496
497 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.
498
499
500 1) The minimum range is about 0.1V. Each chip has internal calibration, so this value is close to 0.1V
501
502 [[image:image-20220628151005-5.png||_mstalt="429546"]]
503
504
505 2) The maximum range is about 1.1V. Each chip has internal calibration, so this value is close to 1.1v
506
507 [[image:image-20220628151056-6.png||_mstalt="431873"]]
508
509
510 3) Within range
511
512 [[image:image-20220628151143-7.png||_mstalt="431210"]]
513
514
515 ==== 2.4.6.4 Ext~=2 TMP117 Sensor(Since Firmware v1.3) ====
516
517
518 [[image:image-20230717151328-8.png||_mstalt="433173" height="299" width="249"]]
519
520 (% style="color:blue" %)**Ext=2,Temperature Sensor(TMP117):**
521
522 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:500px" %)
523 |=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
524 **Size(bytes)**
525 )))|=(% style="width: 80px;background-color:#4F81BD;color:white" %)(((
526 **2**
527 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
528 2
529 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
530 **2**
531 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
532 1
533 )))|=(% style="width: 80px;background-color:#4F81BD;color:white" %)(((
534 2
535 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
536 2
537 )))
538 |(% style="width:110px" %)(((
539 Value
540 )))|(% style="width:71px" %)(((
541 BAT & BAT Status
542 )))|(% style="width:99px" %)TempC_SHT|(% style="width:132px" %)Hum_SHT|(% style="width:54px" %)(((
543 Status & Ext
544 )))|(% style="width:64px" %)TempC_Temp117|(% style="width:64px" %)senseless
545
546 [[image:image-20220906102307-7.png||_mstalt="430443"]]
547
548 (% style="color:blue" %)**Interrupt Mode and Counting Mode:**
549
550 The external cable NE2 can be use for MOD4 and MOD8
551
552
553 ==== 2.4.6.5 Ext~=11 SHT31 Sensor (Since Firmware v1.4.1) ====
554
555
556 [[image:image-20230717151245-7.png||_mstalt="432133" height="351" width="350"]]
557
558 (% style="color:blue" %)**Ext=11,Temperature & Humidity Sensor(SHT31):**
559
560 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:500px" %)
561 |=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
562 **Size(bytes)**
563 )))|=(% style="width: 80px;background-color:#4F81BD;color:white" %)(((
564 **2**
565 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
566 2
567 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
568 **2**
569 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
570 1
571 )))|=(% style="width: 80px;background-color:#4F81BD;color:white" %)(((
572 2
573 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
574 2
575 )))
576 |(% style="width:110px" %)(((
577 Value
578 )))|(% style="width:71px" %)(((
579 BAT & BAT Status
580 )))|(% style="width:99px" %)TempC_SHT|(% style="width:132px" %)Hum_SHT|(% style="width:54px" %)(((
581 Status & Ext
582 )))|(% style="width:64px" %)Ext_TempC_SHT|(% style="width:64px" %)Ext_Hum_SHT
583
584 [[image:SHT31.png||_mstalt="104715"]]
585
586
587 ==== 2.4.6.6 Ext~=4 Interrupt Mode(Since Firmware v1.3) ====
588
589
590 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N/S will send an uplink when there is a trigger.**
591
592
593 (% style="color:blue" %)**Interrupt Mode can be used to connect to external interrupt sensors such as:**
594
595 (% style="color:#037691" %)**Case 1: Door Sensor.** (%%)3.3v Out for such sensor is just to detect Open/Close.
596
597 In Open State, the power consumption is the same as if there is no probe
598
599 In Close state, the power consumption will be 3uA higher than normal.
600
601 [[image:image-20220906100852-1.png||_mstalt="429156" height="205" width="377"]]
602
603
604 Ext=4,Interrupt Sensor：
605
606 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:504px" %)
607 |(% style="width:101px" %)(((
608 **AT+EXT=4,1**
609 )))|(% style="width:395px" %)(((
610 **Sent uplink packet in both rising and falling interrupt**
611 )))
612 |(% style="width:101px" %)(((
613 **AT+EXT=4,2**
614 )))|(% style="width:395px" %)(((
615 **Sent uplink packet only in falling interrupt**
616 )))
617 |(% style="width:101px" %)(((
618 **AT+EXT=4,3**
619 )))|(% style="width:395px" %)(((
620 **Sent uplink packet only in rising interrupt**
621 )))
622
623 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
624 |=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
625 **Size(bytes)**
626 )))|=(% style="width: 90px;background-color:#4F81BD;color:white" %)(((
627 **2**
628 )))|=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
629 2
630 )))|=(% style="width: 50px;background-color:#4F81BD;color:white" %)(((
631 **2**
632 )))|=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
633 1
634 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)1|=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
635 1
636 )))|=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
637 2
638 )))
639 |(% style="width:110px" %)(((
640 Value
641 )))|(% style="width:71px" %)(((
642 BAT & BAT Status
643 )))|(% style="width:99px" %)TempC_SHT|(% style="width:132px" %)Hum_SHT|(% style="width:54px" %)(((
644 Status & Ext
645 )))|(% style="width:64px" %)Exti_pin_level|(% style="width:64px" %)Exti_status|(% style="width:64px" %)senseless
646
647 Trigger by falling edge:
648
649 [[image:image-20220906101145-2.png||_mstalt="428324"]]
650
651
652 Trigger by raising edge:
653
654 [[image:image-20220906101145-3.png||_mstalt="428688"]]
655
656
657 (% style="color:blue" %)**BAT & BAT Status :**
658
659 Check the battery voltage.
660
661 Ex1: 0x0B45 = 2885mV
662
663 Ex2: 0x0B49 = 2889mV
664
665
666 (% style="color:blue" %)**TempC_SHT :**
667
668 The temperature detected by the built-in temperature and humidity sensor SHT31.
669
670 If payload is: 0105H:  (0105 & 8000 == 0), temp = 0105H /10 = 26.1 degree
671
672 If payload is: FF3FH :  (FF3F & 8000 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
673
674 (FF3F & 8000: Judge whether the highest bit is 1, when the highest bit is 1, it is negative)
675
676
677 (% style="color:blue" %)**Hum_SHT :**
678
679 The humidity detected by the built-in temperature and humidity sensor SHT31.
680
681 Read:0295(H)=661(D)    Value:  661 / 10=66.1, So 66.1%
682
683
684 (% style="color:blue" %)**Status & Ext :**
685
686 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:500px" %)
687 |(% 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]**
688 |(% 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)
689
690 * (% style="color:#037691" %)**Poll Message Flag:**(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
691 * (% style="color:#037691" %)**Sync time OK:**(%%)  1: Set time ok，0: N/A. After time SYNC request is sent, LHT65N/S will set this bit to 0 until got the time stamp from the application server.
692 * (% style="color:#037691" %)**Unix Time Request:**(%%) 1: Request server downlink Unix time, 0 : N/A. In this mode, LHT65N/S will set this bit to 1 every 10 days to request a time SYNC. (AT+SYNCMOD to set this)
693
694 (% style="color:blue" %)**Exti_pin_level :**
695
696 * (% style="color:#037691" %)**Wet contacts:**(%%) high and low levels . 1: high level; 0: low level.
697 * (% style="color:#037691" %)**Dry contacts:**(%%)  1: closed; 0: open
698
699 (% style="color:blue" %)**Exti_status :**
700
701 Determines whether the uplink packet is generated by an interrupt.
702
703 1: Interrupt packet
704
705 0: Normal TDC uplink packet
706
707
708 (% style="color:blue" %)**senseless :**
709
710 Reserved position, meaningless. The value is fixed to 0x7FFF.
711
712
713 ==== 2.4.6.7 Ext~=8 Counting Mode(Since Firmware v1.3) ====
714
715
716 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N/S will count for every interrupt and uplink periodically.**
717
718
719 (% 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/S.
720
721 [[image:image-20220906101320-4.png||_mstalt="427336" height="366" width="698"]]
722
723
724 (% 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
725
726 [[image:image-20220906101320-5.png||_mstalt="427700" height="353" width="696"]]
727
728
729 Ext=8, Counting Sensor ( 4 bytes)：
730
731 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:330px" %)
732 |(% style="width:131px" %)(((
733 **AT+EXT=8,0**
734 )))|(% style="width:195px" %)(((
735 **Count at falling interrupt**
736 )))
737 |(% style="width:131px" %)(((
738 **AT+EXT=8,1**
739 )))|(% style="width:195px" %)(((
740 **Count at rising interrupt**
741 )))
742 |(% style="width:131px" %)(((
743 **AT+SETCNT=60**
744 )))|(% style="width:195px" %)(((
745 **Sent current count to 60**
746 )))
747
748 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:420px" %)
749 |=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
750 **Size(bytes)**
751 )))|=(% style="width: 80px;background-color:#4F81BD;color:white" %)(((
752 **2**
753 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
754 2
755 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
756 **2**
757 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
758 1
759 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
760 4
761 )))
762 |(% style="width:110px" %)(((
763 Value
764 )))|(% style="width:71px" %)(((
765 BAT & BAT Status
766 )))|(% style="width:99px" %)TempC_SHT|(% style="width:132px" %)Hum_SHT|(% style="width:54px" %)(((
767 Status & Ext
768 )))|(% style="width:64px" %)Exit_count
769
770 [[image:image-20220906101320-6.png||_mstalt="428064"]]
771
772
773 (% style="color:blue" %)**A2 downlink Command:**
774
775 A2 02:  Same as AT+EXT=2 (AT+EXT= second byte)
776
777 A2 06 01 F4:  Same as AT+EXT=6,500 (AT+EXT= second byte, third and fourth bytes)
778
779 A2 04 02:  Same as AT+EXT=4,2 (AT+EXT= second byte, third byte)
780
781 A2 08 01 00:  Same as AT+EXT=8,0 (AT+EXT= second byte, fourth byte)
782
783 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)
784
785
786 ==== 2.4.6.8 Ext~=10, E2 sensor (TMP117)with Unix Timestamp(Since firmware V1.3.2) ====
787
788
789 (((
790 Timestamp mode is designed for LHT65N/S 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:
791 )))
792
793 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:480px" %)
794 |=(% style="width: 50px;background-color:#4F81BD;color:white" %)(((
795 **Size(bytes)**
796 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
797 **2**
798 )))|=(% style="width: 120px;background-color:#4F81BD;color:white" %)(((
799 **2**
800 )))|=(% style="width: 120px;background-color:#4F81BD;color:white" %)(((
801 **2**
802 )))|=(% style="width: 50px;background-color:#4F81BD;color:white" %)(((
803 **1**
804 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
805 **4**
806 )))
807 |(% style="width:110px" %)(((
808 Value
809 )))|(% style="width:71px" %)(((
810 External temperature
811 )))|(% style="width:99px" %)(((
812 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
813 )))|(% style="width:132px" %)(((
814 BAT Status & [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
815 )))|(% style="width:54px" %)(((
816 Status & Ext
817 )))|(% style="width:64px" %)(((
818 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp"]]
819 )))
820
821 * **Battery status & Built-in Humidity**
822
823 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:461px" %)
824 |=(% 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]
825 |(% style="width:67px" %)Value|(% style="width:256px" %)(((
826 BAT Status
827 00(b): Ultra Low ( BAT <= 2.50v)
828 01(b): Low  (2.50v <=BAT <= 2.55v)
829 10(b): OK   (2.55v <= BAT <=2.65v)
830 11(b): Good   (BAT >= 2.65v)
831 )))|(% style="width:132px" %)(((
832 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
833 )))
834
835 * **Status & Ext Byte**
836
837 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:500px" %)
838 |(% 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]**
839 |(% 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)
840
841 * (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
842 * (% style="color:blue" %)**Sync time OK**: (%%) 1: Set time ok, 0: N/A. After time SYNC request is sent, LHT65N/S will set this bit to 0 until got the time stamp from the application server.
843 * (% style="color:blue" %)**Unix Time Request**:(%%)  1: Request server downlink Unix time, 0 : N/A. In this mode, LHT65N/S will set this bit to 1 every 10 days to request a time SYNC. (AT+SYNCMOD to set this)
844
845 == 2.5 Show data on Datacake ==
846
847
848 (((
849 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:
850 )))
851
852
853 (((
854 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the LoRaWAN network.
855 )))
856
857 (((
858 (% 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.
859 )))
860
861
862 (((
863 Add Datacake:
864 )))
865
866 [[image:image-20220523000825-7.png||_mstalt="429884" height="262" width="583"]]
867
868
869 Select default key as Access Key:
870
871
872 [[image:image-20220523000825-8.png||_mstalt="430248" height="453" width="406"]]
873
874
875 In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/]]) , add LHT65 device.
876
877 [[image:image-20220523000825-9.png||_mstalt="430612" height="366" width="392"]]
878
879
880 [[image:image-20220523000825-10.png||_mstalt="450619" height="413" width="728"]]
881
882
883 == 2.6 Datalog Feature ==
884
885
886 (((
887 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/S will store the reading for future retrieving purposes. There are two ways for IoT servers to get datalog from LHT65N/S.
888 )))
889
890
891 === 2.6.1 Ways to get datalog via LoRaWAN ===
892
893
894 There are two methods:
895
896 (% style="color:blue" %)**Method 1:** (%%)IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specified time range.
897
898
899 (% style="color:blue" %)**Method 2: **(%%)Set PNACKMD=1, LHT65N/S will wait for ACK for every uplink, when there is no LoRaWAN network, LHT65N/S 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.
900
901
902 (% style="color:red" %)**Note for method 2:**
903
904 * a) LHT65N/S will do an ACK check for data records sending to make sure every data arrive server.
905 * b) LHT65N/S will send data in **CONFIRMED Mode** when PNACKMD=1, but LHT65N/S 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/S will consider there is a network connection and resend all NONE-ACK Message.
906
907 Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
908
909 [[image:image-20220703111700-2.png||_mstalt="426244" height="381" width="1119"]]
910
911
912 === 2.6.2 Unix TimeStamp ===
913
914
915 LHT65N/S uses Unix TimeStamp format based on
916
917 [[image:image-20220523001219-11.png||_mstalt="450450" height="97" width="627"]]
918
919
920 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :
921
922 Below is the converter example
923
924 [[image:image-20220523001219-12.png||_mstalt="450827" height="298" width="720"]]
925
926
927 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
928
929
930 === 2.6.3 Set Device Time ===
931
932
933 (((
934 (% style="color:blue" %)**There are two ways to set device's time:**
935 )))
936
937 (((
938 **1.  Through LoRaWAN MAC Command (Default settings)**
939 )))
940
941 (((
942 User need to set SYNCMOD=1 to enable sync time via MAC command.
943 )))
944
945 (((
946 Once LHT65N/S Joined LoRaWAN network, it will send the MAC command (DeviceTimeReq) and the server will reply with (DeviceTimeAns) to send the current time to LHT65N/S. If LHT65N/S fails to get the time from the server, LHT65N/S will use the internal time and wait for next time request (AT+SYNCTDC to set the time request period, default is 10 days).
947 )))
948
949 (((
950 (% 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.**
951 )))
952
953
954 (((
955 **2. Manually Set Time**
956 )))
957
958 (((
959 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
960 )))
961
962
963 === 2.6.4 Poll sensor value ===
964
965
966 User can poll sensor value based on timestamps from the server. Below is the downlink command.
967
968 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:428px" %)
969 |(% 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**
970 |(% style="width:58px" %)31|(% style="width:128px" %)Timestamp start|(% style="width:123px" %)Timestamp end|(% style="width:116px" %)Uplink Interval
971
972 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.
973
974 For example, downlink command (% _mstmutation="1" %)**31 5FC5F350 5FC6 0160 05**(%%)
975
976 Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00's data
977
978 Uplink Internal =5s, means LHT65N/S will send one packet every 5s. range 5~~255s.
979
980
981 === 2.6.5 Datalog Uplink payload ===
982
983
984 The Datalog poll reply uplink will use below payload format.
985
986 **Retrieval data payload:**
987
988 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:480px" %)
989 |=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
990 **Size(bytes)**
991 )))|=(% 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**
992 |(% 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"]]
993
994 **Poll message flag & Ext:**
995
996 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:500px" %)
997 |(% 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]**
998 |(% 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)
999
1000 (% 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 feature)
1001
1002 (% style="color:blue" %)**Poll Message Flag**(%%): 1: This message is a poll message reply.
1003
1004 * Poll Message Flag is set to 1.
1005
1006 * Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
1007
1008 For example, in US915 band, the max payload for different DR is:
1009
1010 (% style="color:blue" %)**a) DR0:** (%%)max is 11 bytes so one entry of data
1011
1012 (% style="color:blue" %)**b) DR1:**(%%) max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
1013
1014 (% style="color:blue" %)**c) DR2:**(%%) total payload includes 11 entries of data
1015
1016 (% style="color:blue" %)**d) DR3: **(%%)total payload includes 22 entries of data.
1017
1018 If devise doesn't have any data in the polling time. Device will uplink 11 bytes of 0   
1019
1020
1021 **Example:**
1022
1023 If LHT65N/S has below data inside Flash:
1024
1025 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
1026 |=(% 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**
1027 |(% 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
1028 |(% 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
1029 |(% 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
1030 |(% 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
1031 |(% 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
1032 |(% 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
1033 |(% 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
1034 |(% 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
1035
1036 If user sends below downlink command: (% style="background-color:yellow" %)3160065F9760066DA705
1037
1038 Where : Start time: 60065F97 = time 21/1/19 04:27:03
1039
1040 Stop time: 60066DA7= time 21/1/19 05:27:03
1041
1042
1043 **LHT65N/S will uplink this payload.**
1044
1045 [[image:image-20220523001219-13.png||_mstalt="451204" height="421" style="text-align:left" width="727"]]
1046
1047
1048 __**7FFF089801464160065F97**__ **__7FFF__ __088E__ __014B__ __41__ __60066009__** 7FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
1049
1050 Where the first 11 bytes is for the first entry:
1051
1052 7FFF089801464160065F97
1053
1054 Ext sensor data=0x7FFF/100=327.67
1055
1056 Temp=0x088E/100=22.00
1057
1058 Hum=0x014B/10=32.6
1059
1060 poll message flag & Ext=0x41,means reply data,Ext=1
1061
1062 Unix time is 0x60066009=1611030423s=21/1/19 04:27:03
1063
1064
1065 == 2.7 Alarm Mode & Feature "Multi sampling, one uplink" ==
1066
1067
1068 (((
1069 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.
1070 )))
1071
1072 (((
1073 (% style="color:red" %)**Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.**
1074
1075
1076 === 2.7.1 ALARM MODE ( Since v1.3.1 firmware) ===
1077
1078 (((
1079 (% class="box infomessage" %)
1080 (((
1081 **AT+LEDALARM=1** :       Enable LED visual Alarm.  (% style="color:#4f81bd" %)**Downlink Command: 3601**
1082 )))
1083 )))
1084
1085 **DS18B20 and TMP117 Threshold Alarm(The mod1 use for external sensors （DS18B20 and TMP117 )**
1086
1087 **~ AT+WMOD=1,60,-10,20**
1088
1089
1090 Explain:
1091
1092 * (% style="color:#037691" %)**parameter1: **(%%)Set Working Mode to **Mode 1，Threshold Alarm（Out of range alarm）**
1093 * (% style="color:#037691" %)**parameter2:**(%%) Sampling Interval is **60**s.
1094 * (% style="color:#037691" %)**parameter3 & parameter4: **(%%)Temperature alarm range is **-10** to 20°C（Set the temperature range value with a coefficient of 100）
1095
1096 (% style="color:#4f81bd" %)**Downlink Command:**
1097
1098 **Example: **A5013CFC1807D0
1099
1100 MOD=01
1101
1102 CITEMP=3C(S) =60(S)
1103
1104 TEMPlow=FC18 = -1000/100=-10(℃)
1105
1106 TEMPhigh=07D0=2000/100=20(℃)
1107
1108
1109 **Fluctuation alarm for DS18B20 and TMP117(Acquisition time: minimum 1s)(The mod2 use for external sensors （DS18B20 and TMP117)**
1110
1111 **AT+WMOD=2,60,5** 
1112
1113 Explain:
1114
1115 * (% style="color:#037691" %)**parameter1: **(%%)Set Working Mode to **Mode 2，Fluctuation alarm**
1116 * (% style="color:#037691" %)**parameter2:**(%%) Sampling Interval is **60**s.
1117 * (% style="color:#037691" %)**parameter3: **(%%)The temperature fluctuation is +-5 °C
1118
1119 (% style="color:#4f81bd" %)**Downlink Command**
1120
1121 **Example: **A5023C05
1122
1123 MOD=02
1124
1125 CITEMP=3C(S)=60(S)
1126
1127 temperature fluctuation=05(℃)
1128
1129
1130 **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)**
1131
1132 **AT+WMOD=3,1,60,20,-16,32,1**   
1133
1134 Explain:
1135
1136 * (% style="color:#037691" %)**parameter1: **(%%)Set Working Mode to **Mode 3，Sampling multiple times and uplink together**
1137 * (% style="color:#037691" %)**parameter2:**(%%) Set the temperature sampling mode to** 1**(1:DS18B20;2:TMP117;3:** **Internal GXHT30).
1138 * (% style="color:#037691" %)**parameter3: **(%%)Sampling Interval is **60**s.(This parameter has no effect on internal sensors)
1139 * (% 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)
1140 * (% style="color:#037691" %)**parameter5 & parameter6: **(%%)Temperature alarm range is **-16** to **32**°C,
1141 * (% 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.
1142
1143 (% style="color:#4f81bd" %)**Downlink Command:**
1144
1145 **Example: **A50301003C14FFF0002001
1146
1147 MOD=03
1148
1149 TEMP=DS18B20
1150
1151 CITEMP=003C(S)=60(S)
1152
1153 Total number of acquisitions=14
1154
1155 TEMPlow=FFF0=-16(℃)
1156
1157 TEMPhigh=0020=20(℃)
1158
1159 ARTEMP=01
1160
1161
1162 **Uplink payload( Fport=3)**
1163
1164 **Example: CBEA**01**0992**//0A41//**09C4**
1165
1166 BatV=CBEA
1167
1168 TEMP=DS18B20
1169
1170 Temp1=0992  ~/~/ 24.50℃
1171
1172 Temp2=0A41  ~/~/ 26.25℃
1173
1174 Temp3=09C4  ~/~/ 25.00℃
1175
1176 (% style="color:red" %)**Note: This uplink will automatically select the appropriate DR according to the data length**
1177
1178 (% style="color:red" %)** In this mode, the temperature resolution of ds18b20 is 0.25℃ to save power consumption**
1179 )))
1180
1181
1182 === 2.7.2 ALARM MODE ( Before v1.3.1 firmware) ===
1183
1184
1185 (% class="box infomessage" %)
1186 (((
1187 (((
1188 **AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)
1189 )))
1190
1191 (((
1192 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
1193 )))
1194
1195 (((
1196 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
1197 )))
1198
1199 (((
1200 (% _mstmutation="1" %)**AT+ARTEMP=? **(%%):  Gets the alarm range of the internal temperature sensor(% style="display:none" %)
1201 )))
1202
1203 (((
1204 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
1205 )))
1206 )))
1207
1208 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
1209
1210 Total bytes: 8 bytes
1211
1212 **Example:**AA0100010001003C
1213
1214 WMOD=01
1215
1216 CITEMP=0001
1217
1218 TEMPlow=0001
1219
1220 TEMPhigh=003C
1221
1222
1223 == 2.8 LED Indicator ==
1224
1225
1226 The LHT65 has a triple color LED which for easy showing different stage .
1227
1228 While user press ACT button, the LED will work as per LED status with ACT button.
1229
1230 In a normal working state:
1231
1232 * For each uplink, the BLUE LED or RED LED will blink once.
1233 BLUE LED when external sensor is connected.
1234 * RED LED when external sensor is not connected
1235 * For each success downlink, the PURPLE LED will blink once
1236
1237 == 2.9 installation ==
1238
1239
1240 [[image:image-20220516231650-1.png||_mstalt="428597" height="436" width="428"]]
1241
1242
1243 = 3. Sensors and Accessories =
1244
1245 == 3.1 E2 Extension Cable ==
1246
1247
1248 [[image:image-20220619092222-1.png||_mstalt="429533" height="182" width="188"]][[image:image-20220619092313-2.png||_mstalt="430222" height="182" width="173"]]
1249
1250
1251 **1m long breakout cable for LHT65N/S. Features:**
1252
1253 * (((
1254 Use for AT Command, works for both LHT52, LHT65N/S
1255 )))
1256 * (((
1257 Update firmware for LHT65N/S, works for both LHT52, LHT65N/S
1258 )))
1259 * (((
1260 Supports ADC mode to monitor external ADC
1261 )))
1262 * (((
1263 Supports Interrupt mode
1264 )))
1265 * (((
1266 Exposed All pins from the LHT65N/S Type-C connector.
1267
1268
1269
1270 )))
1271
1272 [[image:image-20220619092421-3.png||_mstalt="430547" height="371" width="529"]]
1273
1274
1275 == 3.2 E3 Temperature Probe ==
1276
1277
1278 [[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"]]
1279
1280
1281 Temperature sensor with 2 meters cable long
1282
1283 * Resolution: 0.0625 °C
1284 * ±0.5°C accuracy from -10°C to +85°C
1285 * ±2°C accuracy from -55°C to +125°C
1286 * Operating Range: -40 ~~ 125 °C
1287 * Working voltage 2.35v ~~ 5v
1288
1289 == 3.3 E31F Temperature Probe ==
1290
1291
1292 [[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" %)
1293
1294
1295 Temperature sensor with 1 meters cable long
1296
1297
1298 **Built-in Temperature Sensor:**
1299
1300 * Resolution: 0.01 °C
1301 * Accuracy Tolerance : Typ ±0.3 °C
1302 * Long Term Drift: < 0.02 °C/yr
1303 * Operating Range: -40 ~~ 80 °C
1304
1305 **Built-in Humidity Sensor:**
1306
1307 * Resolution: 0.04 % RH
1308 * Accuracy Tolerance : Typ ±3 % RH
1309 * Long Term Drift: < 0.25 RH/yr
1310 * Operating Range: 0 ~~ 96 % RH
1311
1312 **External Temperature Sensor :**
1313
1314 * Resolution: 0.01 °C
1315 * Accuracy Tolerance : Typical ±0.3 °C
1316 * Long Term Drift: < 0.02 °C/yr
1317 * Operating Range: -40 ~~ 125 °C
1318
1319 **External Humidity Sensor :**
1320
1321 * Resolution: 0.04 % RH
1322 * Accuracy Tolerance : Typ ±3 % RH
1323 * Long Term Drift: < 0.25 RH/yr
1324 * Operating Range: 0 ~~ 96 % RH
1325
1326 == 3.4 NE117 Temperature Probe (Model: LHT65N/S-NE117) ==
1327
1328
1329 External Temperature Sensor – NE117:
1330 Equip with TMP117A temperature sensor. TMP117 IC is NIST traceability Sensor by TI.
1331
1332 * Silica gel cable
1333 * ±0.1 °C (maximum) from –20 °C to 50 °C
1334 * ±0.2 °C (maximum) from –40 °C to 100 °C
1335 * ±0.3 °C (maximum) from –55 °C to 150 °C
1336
1337 [[image:image-20240422093011-1.png||height="264" width="265"]][[image:image-20250418120031-2.png||height="308" width="211"]]
1338
1339
1340 == 3.5 Dry Contact Probe (Model: LHT65N/S-DC) ==
1341
1342
1343 * Design for Pulse Counting(Ext=8), Alarm (Ext=4),Open/Close Detect (Ext=4)
1344 * 3 wires: VCC/GND/INT
1345 * Cable Lenght: 1 meter
1346
1347 [[image:image-20240705140520-1.png||height="275" width="238"]](% style="display:none" %) (%%) [[image:image-20250418134933-1.png||height="345" width="193"]]
1348
1349 LHT65N/S-DC can be used to connect various types of external sensor. below.
1350
1351 User can refer this link for the instructions: [[LHT65-DC Connection Instruction>>LHT65-DC Connection Instruction]].
1352
1353 [[image:image-20240422100149-5.png||height="163" width="510"]]
1354
1355 [[image:image-20240422100217-6.png||height="141" width="507"]]
1356
1357
1358 == 3.6 Door Sensor (Model: LHT65N/S-DS) ==
1359
1360
1361 * Aluminum Alloy Door Sensor
1362 * Detect Distance: ~~3cm
1363 * Cable Lenght: 1 meter
1364
1365 **Notice: When order LHT65N/S-DS, the device is by default set to: a) AT+EXT=4,1 ; b) Default Uplink Interval TDC is 12 hour.**
1366
1367 [[image:image-20240705144054-2.png||height="256" width="207"]] [[image:image-20250418135348-2.png||height="299" width="168"]]
1368
1369
1370 = 4. Configure LHT65N/S via AT command or LoRaWAN downlink =
1371
1372
1373 (((
1374 Use can configure LHT65N/S via AT Command or LoRaWAN Downlink.
1375 )))
1376
1377 * (((
1378 AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
1379 )))
1380
1381 * (((
1382 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
1383 )))
1384
1385 (((
1386 There are two kinds of commands to configure LHT65N/S, they are:
1387 )))
1388
1389 * (((
1390 (% style="color:#4f81bd" %)**General Commands**.
1391 )))
1392
1393 (((
1394 These commands are to configure:
1395 )))
1396
1397 1. (((
1398 General system settings like: uplink interval.
1399 )))
1400 1. (((
1401 LoRaWAN protocol & radio-related commands.
1402 )))
1403
1404 (((
1405 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]]
1406 )))
1407
1408 * (((
1409 (% style="color:#4f81bd" %)**Commands special design for LHT65N/S**
1410 )))
1411
1412 (((
1413 These commands are only valid for LHT65N/S, as below:
1414 )))
1415
1416
1417 == 4.1 Set Transmit Interval Time ==
1418
1419
1420 Feature: Change LoRaWAN End Node Transmit Interval.
1421
1422
1423 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
1424
1425 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:501px" %)
1426 |(% 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**
1427 |(% style="width:155px" %)AT+TDC=?|(% style="width:162px" %)Show current transmit Interval|(% style="width:177px" %)30000 OK the interval is 30000ms = 30s
1428 |(% style="width:155px" %)AT+TDC=60000|(% style="width:162px" %)Set Transmit Interval|(% style="width:177px" %)OK Set transmit interval to 60000ms = 60 seconds
1429
1430 (% style="color:#4f81bd" %)**Downlink Command: 0x01**
1431
1432 Format: Command Code (0x01) followed by 3 bytes time value.
1433
1434 If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.
1435
1436 * **Example 1**: Downlink Payload: 0100001E  ~/~/ Set Transmit Interval (TDC) = 30 seconds
1437
1438 * **Example 2**: Downlink Payload: 0100003C  ~/~/ Set Transmit Interval (TDC) = 60 seconds
1439
1440 == 4.2 Set External Sensor Mode ==
1441
1442
1443 Feature: Change External Sensor Mode.
1444
1445 (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1446
1447 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:500.222px" %)
1448 |(% 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**
1449 |(% style="width:155px" %)AT+EXT=?|(% style="width:151px" %)Get current external sensor mode|(% style="width:158px" %)1 OK External Sensor mode =1
1450 |(% style="width:155px" %)AT+EXT=1|(% colspan="2" rowspan="1" style="width:309px" %)Set external sensor mode to 1|(% style="width:126px" %)A201
1451 |(% style="width:155px" %)AT+EXT=9|(% colspan="2" rowspan="1" style="width:309px" %)Set to external DS18B20 with timestamp|(% style="width:126px" %)A209
1452 |(% 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
1453 |(% 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
1454 |(% 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
1455 |(% 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
1456 |(% 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
1457 |(% 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
1458
1459 **Response**
1460
1461 (% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1462
1463 Total bytes: 2 ~~ 5 bytes
1464
1465 **Example:**
1466
1467 * 0xA201: Set external sensor type to E1
1468
1469 * 0xA209: Same as AT+EXT=9
1470
1471 * 0xA20702003c: Same as AT+SETCNT=60
1472
1473 == 4.3 Enable/Disable uplink DS18B20 Temperature probe ID ==
1474
1475
1476 **Feature**: If PID is enabled, LHT65N/S will send the DS18B20 temperature probe ID on:
1477
1478 * First Packet after OTAA Join
1479 * Every 24 hours since the first packet.
1480
1481 PID is default set to disable (0)
1482
1483 (% style="color:red" %)**Notice: This feature only valid when EXT=1 or EXt=9**
1484
1485 (% style="color:#4f81bd" %)**AT Command:**
1486
1487 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:381px" %)
1488 |(% 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**
1489 |(% style="width:155px" %)AT+PID=1|(% style="width:136px" %)Enable PID uplink|(% style="width:86px" %)OK
1490
1491 (% style="color:#4f81bd" %)**Downlink Command:**
1492
1493 * **0xA800**  **~-~->** AT+PID=0
1494 * **0xA801**     **~-~->** AT+PID=1
1495
1496 == 4.4 Set Password ==
1497
1498
1499 Feature: Set device password, max 9 digits
1500
1501 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1502
1503 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:372px" %)
1504 |(% 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**
1505 |(% style="width:155px" %)AT+PWORD=?|(% style="width:124px" %)Show password|(% style="width:86px" %)(((
1506 123456
1507
1508 OK
1509 )))
1510 |(% style="width:155px" %)AT+PWORD=999999|(% style="width:124px" %)Set password|(% style="width:86px" %)OK
1511
1512 (% style="color:#4f81bd" %)**Downlink Command:**
1513
1514 No downlink command for this feature.
1515
1516
1517 == 4.5 Quit AT Command ==
1518
1519
1520 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1521
1522 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1523
1524 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:433px" %)
1525 |(% 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**
1526 |(% style="width:155px" %)AT+DISAT|(% style="width:191px" %)Quit AT Commands mode|(% style="width:86px" %)OK
1527
1528 (% style="color:#4f81bd" %)**Downlink Command:**
1529
1530 No downlink command for this feature.
1531
1532
1533 == 4.6 Set to sleep mode ==
1534
1535
1536 Feature: Set device to sleep mode
1537
1538 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1539 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1540
1541 (% style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1542
1543 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:513px" %)
1544 |(% 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**
1545 |(% style="width:155px" %)AT+SLEEP|(% style="width:139px" %)Set to sleep mode|(% style="width:213px" %)(((
1546 Clear all stored sensor data…
1547
1548 OK
1549 )))
1550
1551 (% style="color:#4f81bd" %)**Downlink Command:**
1552
1553 * There is no downlink command to set to Sleep mode.
1554
1555 == 4.7 Set system time ==
1556
1557
1558 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1559
1560 (% style="color:#4f81bd" %)**AT Command:**
1561
1562 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:506px" %)
1563 |(% style="background-color:#4f81bd; color:white; width:188px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:318px" %)**Function**
1564 |(% style="width:154px" %)AT+TIMESTAMP=1611104352|(% style="width:285px" %)(((
1565 OK
1566
1567 Set System time to 2021-01-20 00:59:12
1568 )))
1569
1570 (% style="color:#4f81bd" %)**Downlink Command:**
1571
1572 0x306007806000  ~/~/  Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1573
1574
1575 == 4.8 Set Time Sync Mode ==
1576
1577
1578 (((
1579 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1580 )))
1581
1582 (((
1583 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.
1584 )))
1585
1586 (% style="color:#4f81bd" %)**AT Command:**
1587
1588 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:475px" %)
1589 |(% style="background-color:#4f81bd; color:white; width:158px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:317px" %)**Function**
1590 |(% style="width:156px" %)AT+SYNCMOD=1|(% style="width:315px" %)Enable Sync system time via LoRaWAN MAC Command (DeviceTimeReq)
1591
1592 (% style="color:#4f81bd" %)**Downlink Command:**
1593
1594 0x28 01  ~/~/  Same As AT+SYNCMOD=1
1595 0x28 00  ~/~/  Same As AT+SYNCMOD=0
1596
1597
1598 == 4.9 Set Time Sync Interval ==
1599
1600
1601 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1602
1603 (% style="color:#4f81bd" %)**AT Command:**
1604
1605 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:472px" %)
1606 |(% style="background-color:#4f81bd; color:white; width:158px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:314px" %)**Function**
1607 |(% style="width:156px" %)AT+SYNCTDC=0x0A |(% style="width:311px" %)Set SYNCTDC to 10 (0x0A), so the sync time is 10 days.
1608
1609 (% style="color:#4f81bd" %)**Downlink Command:**
1610
1611 **0x29 0A**  ~/~/ Same as AT+SYNCTDC=0x0A
1612
1613
1614 == 4.10 Get data ==
1615
1616
1617 Feature: Get the current sensor data.
1618
1619 (% style="color:#4f81bd" %)**AT Command:**
1620
1621 * **AT+GETSENSORVALUE=0**      ~/~/ The serial port gets the reading of the current sensor
1622 * **AT+GETSENSORVALUE=1**      ~/~/ The serial port gets the current sensor reading and uploads it.
1623
1624 == 4.11 Print data entries base on page ==
1625
1626
1627 Feature: Print the sector data from start page to stop page (max is 416 pages).
1628
1629 (% style="color:#4f81bd" %)**AT Command: AT+PDTA**
1630
1631 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
1632 |(% style="background-color:#4f81bd; color:white; width:158px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:352px" %)**Function**
1633 |(% style="width:156px" %)(((
1634 AT+PDTA=1,3
1635 Print page 1 to 3
1636 )))|(% style="width:311px" %)(((
1637 8019500 19/6/26 16:48 1 2992 sht temp=28.21 sht hum=71.5 ds temp=27.31
1638 8019510 19/6/26 16:53 1 2994 sht temp=27.64 sht hum=69.3 ds temp=26.93
1639 8019520 19/6/26 16:58 1 2996 sht temp=28.39 sht hum=72.0 ds temp=27.06
1640 8019530 19/6/26 17:03 1 2996 sht temp=27.97 sht hum=70.4 ds temp=27.12
1641 8019540 19/6/26 17:08 1 2996 sht temp=27.80 sht hum=72.9 ds temp=27.06
1642 8019550 19/6/26 17:13 1 2998 sht temp=27.30 sht hum=72.4 ds temp=26.68
1643 8019560 19/6/26 17:22 1 2992 sht temp=26.27 sht hum=62.3 ds temp=26.56
1644 8019570
1645 8019580
1646 8019590
1647 80195A0
1648 80195B0
1649 80195C0
1650 80195D0
1651 80195E0
1652 80195F0
1653
1654 OK
1655 )))
1656
1657 (% style="color:#4f81bd" %)**Downlink Command:**
1658
1659 No downlink commands for feature
1660
1661
1662 == 4.12 Print last few data entries ==
1663
1664
1665 Feature: Print the last few data entries
1666
1667 (% style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1668
1669 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
1670 |(% style="background-color:#4f81bd; color:white; width:158px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:352px" %)**Function**
1671 |(% style="width:156px" %)(((
1672 AT+PLDTA=5
1673 Print last 5 entries
1674 )))|(% style="width:311px" %)(((
1675 Stop Tx and RTP events when read sensor data
1676 1 19/6/26 13:59 1 3005 sht temp=27.09 sht hum=79.5 ds temp=26.75
1677 2 19/6/26 14:04 1 3007 sht temp=26.65 sht hum=74.8 ds temp=26.43
1678 3 19/6/26 14:09 1 3007 sht temp=26.91 sht hum=77.9 ds temp=26.56
1679 4 19/6/26 14:15 1 3007 sht temp=26.93 sht hum=76.7 ds temp=26.75
1680 5 19/6/26 14:20 1 3007 sht temp=26.78 sht hum=76.6 ds temp=26.43
1681 Start Tx and RTP events
1682 OK
1683 )))
1684
1685 (% style="color:#4f81bd" %)**Downlink Command:**
1686
1687 No downlink commands for feature
1688
1689
1690 == 4.13 Clear Flash Record ==
1691
1692
1693 Feature: Clear flash storage for data log feature.
1694
1695 (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1696
1697 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:503px" %)
1698 |(% 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**
1699 |(% style="width:155px" %)AT+CLRDTA |(% style="width:134px" %)Clear date record|(% style="width:209px" %)(((
1700 Clear all stored sensor data…
1701
1702 OK
1703 )))
1704
1705 (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1706
1707 * Example: 0xA301  ~/~/  Same as AT+CLRDTA
1708
1709 == 4.14 Auto Send None-ACK messages ==
1710
1711
1712 Feature: LHT65N/S will wait for ACK for each uplink, If LHT65N/S doesn't get ACK from the IoT server, it will consider the message doesn't arrive server and store it. LHT65N/S keeps sending messages in normal periodically. Once LHT65N/S gets ACK from a server, it will consider the network is ok and start to send the not-arrive message.
1713
1714 (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1715
1716 The default factory setting is 0
1717
1718 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:367px" %)
1719 |=(% 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**
1720 |(% style="width:158px" %)AT+PNACKMD=1|(% style="width:118px" %)Poll None-ACK message|(% style="width:87px" %)OK
1721
1722 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1723
1724 * Example: 0x3401  ~/~/  Same as AT+PNACKMD=1
1725
1726 == 4.15 Modified WMOD command for external sensor TMP117 or DS18B20 temperature alarm(Since firmware 1.3.0) ==
1727
1728
1729 Feature: Set internal and external temperature sensor alarms.
1730
1731 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:500px" %)
1732 |=(% 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**
1733 |(% style="width:268px" %)AT+WMOD=parameter1,parameter2,parameter3,parameter4|(% style="width:255px" %)Set internal and external temperature sensor alarms|(% style="width:181px" %)OK
1734
1735 (% style="color:#037691" %)**AT+WMOD=parameter1,parameter2,parameter3,parameter4**
1736
1737 (% style="color:#037691" %)**Parameter 1**(%%):  Alarm mode:
1738
1739 0): Cancel
1740
1741 1): Threshold alarm
1742
1743 2): Fluctuation alarm
1744
1745 3): Sampling multiple times and uplink together
1746
1747
1748 (% style="color:#037691" %)** Parameter 2**(%%):  Sampling time. Unit: seconds, up to 255 seconds.
1749
1750 (% 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.**
1751
1752
1753 (% style="color:#037691" %) **Parameter 3 and parameter 4:**
1754
1755 **1):  If Alarm Mode is set to 1:** Parameter 3 and parameter 4 are valid, as before, they represent low temperature and high temperature.
1756
1757 Such as AT+WMOD=1,60,45,105, it means high and low temperature alarm.
1758
1759
1760 **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.
1761
1762 Such as AT+WMOD=2,10,2,it means that it is a fluctuation alarm.
1763
1764 If the difference between the current collected temperature and the last Uplin is ±2 degrees, the alarm will be issued.
1765
1766
1767 **3): If Alarm Mode is set to 3:**
1768
1769 * (% style="color:#037691" %)**parameter1: **(%%)Set Working Mode to **Mode 3**
1770 * (% style="color:#037691" %)**parameter2:**(%%) Set the temperature sampling mode to** 1**(1:DS18B20;2:TMP117;3:** **Internal GXHT30).
1771 * (% style="color:#037691" %)**parameter3: **(%%)Sampling Interval is **60**s.
1772 * (% 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)
1773 * (% style="color:#037691" %)**parameter5 & parameter6: **(%%)Temperature alarm range is **-16** to **32**°C,
1774 * (% 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.
1775
1776 (% style="color:#4f81bd" %)**Downlink Command: 0xA5**
1777
1778 0xA5 00 ~-~- AT+WMOD=0.
1779
1780 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 )
1781
1782 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))
1783
1784 0xA5 02 0A 02 ~-~- AT+WMOD=2,10,2  (AT+WMOD = second byte, third byte, fourth byte)
1785
1786 0xA5 03 01 00 3C 14 FF F0 00 20 01~-~-AT+WMOD=3,1,60,20,-16,32,1
1787
1788 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.
1789
1790
1791 == 4.16 Get Firmware Version Info(Since V1.4.0) ==
1792
1793
1794 Feature: use downlink to get firmware version.
1795
1796 (% style="color:#4f81bd" %)**Downlink Command: 0x2601**
1797
1798 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:360px" %)
1799 |=(% 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)**
1800 |(% style="width:90px" %)Get Firmware Version Info|(% style="width:90px" %)Any|(% style="width:90px" %)26|(% style="width:90px" %)2
1801
1802 Device will reply with firmware version info, device info. frequency band info. detail please check device user manual.
1803
1804 Total 7 bytes Example(**FPort=5**): [[image:image-20240605120110-2.png]]
1805
1806 (% style="color:#037691" %)**Sensor model**
1807
1808 0x0b: LHT65N/S
1809
1810
1811 (% style="color:#037691" %)**Firmware version**
1812
1813 firm_ver=(bytes[1]&0x0f)+'.'+(bytes[2]>>4&0x0f)+'.'+(bytes[2]&0xOf);
1814
1815 Example: 0x0140=V1.4.0
1816
1817
1818 (% style="color:#037691" %)** Frequency Band:**
1819
1820 * 0x01: EU868
1821 * 0x02: US915
1822 * 0x03: IN865
1823 * 0x04: AU915
1824 * 0x05: KZ865
1825 * 0x06: RU864
1826 * 0x07: AS923
1827 * 0x08: AS923-1
1828 * 0x09: AS923-2
1829 * 0xa0: AS923-3
1830
1831 (% style="color:#037691" %)**Subband**
1832
1833 value 0x00 ~~ 0x08
1834
1835 Example: 0xFF ~-~--> " NULL"
1836
1837
1838 (% style="color:#037691" %)**Battery**
1839
1840 Ex1:  0x0C4E(H) = 3150(D) = 3150mV =3.15V
1841
1842 Ex2:  0x0CF8(H) = 3320(D) = 3320mV =3.32V
1843
1844
1845 == 4.17 Setting LEDAlarm ==
1846
1847 Feature: Setting LEDAlarm
1848
1849 The default factory setting is 0
1850
1851 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:367px" %)
1852 |=(% 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**
1853 |(% style="width:158px" %)AT+LEDALARM=1|(% style="width:118px" %)Setting LEDAlarm|(% style="width:87px" %)OK
1854
1855 (% style="color:#4f81bd" %)**Downlink Command: 0x3601**
1856
1857 (% style="color:red" %)**Note: This alarm range is controlled by AT+ARTEMP. You need to set AT+WMOD=1 before use. **
1858
1859 = 5. Battery & How to replace =
1860
1861 == 5.1 Battery Type ==
1862
1863
1864 (((
1865 LHT65N/S 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.
1866 )))
1867
1868 (((
1869 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1870
1871 [[image:image-20220515075034-1.png||_mstalt="428961" height="208" width="644"]]
1872 )))
1873
1874 The minimum Working Voltage for the LHT65N/S is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1875
1876 == 5.2 Replace Battery ==
1877
1878
1879 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.
1880
1881 [[image:image-20220515075440-2.png||_mstalt="429546" height="338" width="272"]][[image:image-20220515075625-3.png||_mstalt="431574" height="193" width="257"]]
1882
1883
1884 == 5.3 Battery Life Analyze ==
1885
1886
1887 (((
1888 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:
1889 [[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]]
1890 )))
1891
1892
1893 (((
1894 A full detail test report for LHT65N/S 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]]
1895 )))
1896
1897
1898 = 6. FAQ =
1899
1900 == 6.1 How to connect to LHT65N/S UART interface? ==
1901
1902
1903 The LHT65N/S has the UART interface in its Type-C. The UART Interface can be used for
1904
1905 * Send AT Commands, and get output from LHT65N/S
1906 * Upgrade firmwre of LHT65N/S.
1907
1908 The hardware connection is: **PC <~-~-> USB to TTL Adapter <~-~-> Jump wires <~-~-> Type-C Adapter <~-~-> LHT65N/S**
1909
1910
1911 **Option of USB TTL adapter:**
1912
1913 * CP2101 USB TTL Adapter
1914 * CH340 USB TTL Adapter
1915 * FT232 USB TTL Adapter
1916
1917 **Option of Type-C Adapter:**
1918
1919 [[image:image-20240122103221-3.png||_mstalt="425594" height="694" width="1039"]]
1920
1921
1922 **Connection:**
1923
1924 * (% style="background-color:yellow" %)**USB to TTL GND <~-~-> LHT65N/S GND**
1925 * (% style="background-color:yellow" %)**USB to TTL RXD <~-~-> LHT65N/S TXD**
1926 * (% style="background-color:yellow" %)**USB to TTL TXD <~-~-> LHT65N/S RXD**
1927
1928 (((
1929
1930
1931 Connection Example:
1932
1933 [[image:1655802313617-381.png||_mstalt="293917"]]
1934
1935
1936 [[image:image-20240122092100-1.jpeg||_mstalt="467389" height="466" width="643"]]
1937
1938
1939 == 6.2 How to use AT Commands? ==
1940
1941
1942 First, Connect PC and LHT65N/S via USB TTL adapter as **FAQ 6.1**
1943
1944 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/S. 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.
1945 )))
1946
1947
1948 Input password and ATZ to activate LHT65N/S, As shown below:
1949
1950 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1951
1952
1953 AT Command List is as below:
1954
1955 AT+<CMD>? :  Help on <CMD>
1956
1957 AT+<CMD> :  Run <CMD>
1958
1959 AT+<CMD>=<value> :  Set the value
1960
1961 AT+<CMD>=? :  Get the value
1962
1963 AT+DEBUG:  Set more info output
1964
1965 ATZ:  Trig a reset of the MCU
1966
1967 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1968
1969 AT+DEUI:  Get or Set the Device EUI
1970
1971 AT+DADDR:  Get or Set the Device Address
1972
1973 AT+APPKEY:  Get or Set the Application Key
1974
1975 AT+NWKSKEY:  Get or Set the Network Session Key
1976
1977 AT+APPSKEY:  Get or Set the Application Session Key
1978
1979 AT+APPEUI:  Get or Set the Application EUI
1980
1981 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1982
1983 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1984
1985 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1986
1987 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1988
1989 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1990
1991 AT+RX2FQ:  Get or Set the Rx2 window frequency
1992
1993 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1994
1995 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1996
1997 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1998
1999 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
2000
2001 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
2002
2003 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
2004
2005 AT+NWKID:  Get or Set the Network ID
2006
2007 AT+FCU:  Get or Set the Frame Counter Uplink
2008
2009 AT+FCD:  Get or Set the Frame Counter Downlink
2010
2011 AT+CLASS:  Get or Set the Device Class
2012
2013 AT+JOIN:  Join network
2014
2015 AT+NJS:  Get the join status
2016
2017 AT+SENDB:  Send hexadecimal data along with the application port
2018
2019 AT+SEND:  Send text data along with the application port
2020
2021 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
2022
2023 AT+RECV:  Print last received data in raw format
2024
2025 AT+VER:  Get current image version and Frequency Band
2026
2027 AT+CFM:  Get or Set the confirmation mode (0-1)
2028
2029 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
2030
2031 AT+SNR:  Get the SNR of the last received packet
2032
2033 AT+RSSI:  Get the RSSI of the last received packet
2034
2035 AT+TDC:  Get or set the application data transmission interval in ms
2036
2037 AT+PORT:  Get or set the application port
2038
2039 AT+DISAT:  Disable AT commands
2040
2041 AT+PWORD: Set password, max 9 digits
2042
2043 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
2044
2045 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
2046
2047 AT+PDTA:  Print the sector data from start page to stop page
2048
2049 AT+PLDTA:  Print the last few sets of data
2050
2051 AT+CLRDTA:  Clear the storage, record position back to 1st
2052
2053 AT+SLEEP:  Set sleep mode
2054
2055 AT+EXT:  Get or Set external sensor model
2056
2057 AT+BAT:  Get the current battery voltage in mV
2058
2059 AT+CFG:  Print all configurations
2060
2061 AT+WMOD:  Get or Set Work Mode
2062
2063 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
2064
2065 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
2066
2067 AT+SETCNT:  Set the count at present
2068
2069 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
2070
2071 AT+RPL:  Get or set response level
2072
2073 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
2074
2075 AT+LEAPSEC:  Get or Set Leap Second
2076
2077 AT+SYNCMOD:  Get or Set time synchronization method
2078
2079 AT+SYNCTDC:  Get or set time synchronization interval in day
2080
2081 AT+PID:  Get or set the PID
2082
2083
2084 == 6.3 How to use Downlink commands? ==
2085
2086
2087 **Downlink commands:**
2088
2089
2090 (% style="color:blue" %)**TTN:**
2091
2092 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
2093
2094
2095
2096 (% style="color:blue" %)**Helium: **
2097
2098 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
2099
2100
2101
2102 (% style="color:blue" %)**Chirpstack: The downlink window will not be displayed until the network is accessed**
2103
2104
2105 [[image:image-20220615094850-6.png||_mstalt="433082"]]
2106
2107
2108 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
2109
2110
2111
2112 (% style="color:blue" %)**AWS-IOT :**
2113
2114 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
2115
2116
2117 == 6.4 How to change the uplink interval? ==
2118
2119
2120 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);"]]
2121
2122
2123 == 6.5 How to upgrade firmware? ==
2124
2125
2126 The firmware (% style="color:blue" %)**before V1.4**(%%) does not have wireless upgrade function, and the starting address of the firmware is **0x08000000**.
2127 (% style="color:blue" %)**Since and including V1.4**(%%), LHT65N/S supports wireless upgrade, and its firmware is divided into **bootloader + working firmware**. Burning bootloader selects address** 0x08000000**, and burning working firmware selects address **0x0800D000**.
2128
2129
2130 LHT65N/S has two types of firmware: **Firmware with bootloader** and **Firmware without bootloader**.** [[Firmware Download Link>>https://www.dropbox.com/sh/gvoto921a75q6rx/AADaaspjTtikr9X82Ma2S5w4a?dl=0]]**:
2131
2132
2133 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:
2134
2135 [[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"]]
2136
2137 [[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"]]
2138
2139 (% 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/S.**
2140
2141 * For the connection ** E2 cable <~-~-~-~-> USB-TTL adapter**:
2142
2143 (% style="background-color:yellow" %)** Port 4(Blue wire)<~-~-~-~->USB-TTL 3V3**
2144
2145 [[image:image-20240720093846-3.jpeg||height="433" width="742"]]
2146
2147 * For the connection  **USB Type-C Extender<~-~-~-~->USB-TTL adapter**:
2148
2149 (% style="background-color:yellow" %)**Pin 6<~-~-~-~->USB-TTL 3V3**
2150
2151 [[image:image-20240720093332-1.jpeg||height="378" width="644"]]
2152
2153 === 6.5.1 Burning firmware before V1.3 (including V1.3) ===
2154
2155
2156 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
2157
2158 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".**
2159
2160 [[image:image-20240716174308-1.png||height="523" width="410"]]
2161
2162
2163 === 6.5.2 Updated firmware for V1.4 and above ===
2164
2165
2166 Updating firmware version V1.4 and above requires distinguishing whether the firmware comes with a bootloader or not.
2167
2168 * 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.
2169 * For nodes where the bootloader was accidentally erased, customers need to burn the bootloader and working firmware using** TremoProgrammer**.
2170
2171 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.
2172
2173
2174 ==== 6.5.2.1 Update firmware (Assume device already have bootloader) ====
2175
2176
2177 (% style="color:blue" %)**Step1 : Connect UART as per FAQ 6.1**
2178
2179 (% 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.**
2180
2181
2182 (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/]]**
2183
2184
2185 ==== 6.5.2.2 Update firmware (Assume device doesn't have bootloader) ====
2186
2187
2188 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.
2189
2190 (% style="color:blue" %)**Step1**(%%): Install [[TremoProgrammer>>https://www.dropbox.com/scl/fo/gk1rb5pnnjw4kv5m5cs0z/h?rlkey=906ouvgbvif721f9bj795vfrh&dl=0]]  first.
2191
2192 [[image:image-20220615170542-5.png||_mstalt="430638"]]
2193
2194
2195
2196 (% _mstmutation="1" style="color:blue" %)**Step2**(%%): Hardware Connection
2197
2198 Connect PC and LHT65N/S via USB TTL adapter .
2199
2200 (% style="color:red" %)**Note: Burn mode: Port4 (BOOT_CTL) of E2 cable connects 3V3 of USB-TTL.**
2201
2202 **Connection method:**
2203
2204 (% style="background-color:yellow" %)**USB-TTL GND <~-~-> Port 1 of E2 cable**
2205
2206 (% style="background-color:yellow" %)**USB-TTL 3V3 <~-~-> Port 4 of E2 cable**
2207
2208 (% style="background-color:yellow" %)**USB-TTL TXD <~-~-> Port 9 of E2 cable**
2209
2210 (% style="background-color:yellow" %)**USB-TTL RXD <~-~-> Port 5 of E2 cable**
2211
2212 [[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"]]
2213
2214
2215 (% style="color:blue" %)**Step3: **(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
2216
2217 [[image:image-20220615171334-6.png||_mstalt="431028"]]
2218
2219
2220 **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.
2221
2222 Then click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
2223
2224
2225 When this interface appears, it indicates that the download has been completed.
2226
2227 [[image:image-20220620160723-8.png||_mstalt="430703"]]
2228
2229
2230 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.
2231
2232
2233 == 6.6 Why can't I see the datalog information ==
2234
2235
2236 ~1. The time is not aligned, and the correct query command is not used.
2237
2238 2. Decoder error, did not parse the datalog data, the data was filtered.
2239
2240
2241 == 6.7 How can i read sensor data without LoRaWAN? For Calibration Purpose ==
2242
2243
2244 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"]]
2245
2246 [[image:image-20240122092100-1.jpeg||_mstalt="467389" height="346" width="476"]]
2247
2248
2249 After there is UART Connectio, run below commands:
2250
2251 1.** AT+NJM=0**   ~/~/ Set Device to ABP mode , so can works without join to LoRaWAN server.
2252
2253 2.** AT+GETSENSORVALUE=0**  ~/~/The serial port gets the reading of the current sensor.
2254
2255 Example output:
2256
2257 [[image:image-20240128093852-1.png||_mstalt="431912" height="235" width="552"]]
2258
2259
2260 = 7. Order Info =
2261
2262
2263 Part Number: (% style="color:#4f81bd" %)** LHT65N/S-XX-YY**
2264
2265 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
2266
2267 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
2268 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
2269 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
2270 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
2271 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
2272 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**US915**(%%): LoRaWAN US915 band
2273 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
2274 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
2275
2276 = 8. Packing Info =
2277
2278
2279 **Package Includes**:
2280
2281 * LHT65N/S Temperature & Humidity Sensor x 1
2282 * 1 x External Lora Antenna for LHT65S
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.