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Version 342.2 by Xiaoling on 2025/04/18 13:50
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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="463" width="384"]]
519
520
521 (% style="color:blue" %)**Ext=2,Temperature Sensor(TMP117):**
522
523
524 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:500px" %)
525 |=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
526 **Size(bytes)**
527 )))|=(% style="width: 80px;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 **2**
533 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
534 1
535 )))|=(% style="width: 80px;background-color:#4F81BD;color:white" %)(((
536 2
537 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
538 2
539 )))
540 |(% style="width:110px" %)(((
541 Value
542 )))|(% style="width:71px" %)(((
543 BAT & BAT Status
544 )))|(% style="width:99px" %)TempC_SHT|(% style="width:132px" %)Hum_SHT|(% style="width:54px" %)(((
545 Status & Ext
546 )))|(% style="width:64px" %)TempC_Temp117|(% style="width:64px" %)senseless
547
548 [[image:image-20220906102307-7.png||_mstalt="430443"]]
549
550 (% style="color:blue" %)**Interrupt Mode and Counting Mode:**
551
552 The external cable NE2 can be use for MOD4 and MOD8
553
554
555 ==== 2.4.6.5 Ext~=11 SHT31 Sensor (Since Firmware v1.4.1) ====
556
557
558 [[image:image-20230717151245-7.png||_mstalt="432133" height="467" width="466"]]
559
560 (% style="color:blue" %)**Ext=11,Temperature & Humidity Sensor(SHT31):**
561
562 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:500px" %)
563 |=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
564 **Size(bytes)**
565 )))|=(% style="width: 80px;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 **2**
571 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
572 1
573 )))|=(% style="width: 80px;background-color:#4F81BD;color:white" %)(((
574 2
575 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
576 2
577 )))
578 |(% style="width:110px" %)(((
579 Value
580 )))|(% style="width:71px" %)(((
581 BAT & BAT Status
582 )))|(% style="width:99px" %)TempC_SHT|(% style="width:132px" %)Hum_SHT|(% style="width:54px" %)(((
583 Status & Ext
584 )))|(% style="width:64px" %)Ext_TempC_SHT|(% style="width:64px" %)Ext_Hum_SHT
585
586 [[image:SHT31.png||_mstalt="104715"]]
587
588
589 ==== 2.4.6.6 Ext~=4 Interrupt Mode(Since Firmware v1.3) ====
590
591
592 (% 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.**
593
594
595 (% style="color:blue" %)**Interrupt Mode can be used to connect to external interrupt sensors such as:**
596
597 (% style="color:#037691" %)**Case 1: Door Sensor.** (%%)3.3v Out for such sensor is just to detect Open/Close.
598
599 In Open State, the power consumption is the same as if there is no probe
600
601 In Close state, the power consumption will be 3uA higher than normal.
602
603 [[image:image-20220906100852-1.png||_mstalt="429156" height="205" width="377"]]
604
605
606 Ext=4,Interrupt Sensor：
607
608 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:504px" %)
609 |(% style="width:101px" %)(((
610 **AT+EXT=4,1**
611 )))|(% style="width:395px" %)(((
612 **Sent uplink packet in both rising and falling interrupt**
613 )))
614 |(% style="width:101px" %)(((
615 **AT+EXT=4,2**
616 )))|(% style="width:395px" %)(((
617 **Sent uplink packet only in falling interrupt**
618 )))
619 |(% style="width:101px" %)(((
620 **AT+EXT=4,3**
621 )))|(% style="width:395px" %)(((
622 **Sent uplink packet only in rising interrupt**
623 )))
624
625 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
626 |=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
627 **Size(bytes)**
628 )))|=(% style="width: 90px;background-color:#4F81BD;color:white" %)(((
629 **2**
630 )))|=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
631 2
632 )))|=(% style="width: 50px;background-color:#4F81BD;color:white" %)(((
633 **2**
634 )))|=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
635 1
636 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)1|=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
637 1
638 )))|=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
639 2
640 )))
641 |(% style="width:110px" %)(((
642 Value
643 )))|(% style="width:71px" %)(((
644 BAT & BAT Status
645 )))|(% style="width:99px" %)TempC_SHT|(% style="width:132px" %)Hum_SHT|(% style="width:54px" %)(((
646 Status & Ext
647 )))|(% style="width:64px" %)Exti_pin_level|(% style="width:64px" %)Exti_status|(% style="width:64px" %)senseless
648
649 Trigger by falling edge:
650
651 [[image:image-20220906101145-2.png||_mstalt="428324"]]
652
653
654 Trigger by raising edge:
655
656 [[image:image-20220906101145-3.png||_mstalt="428688"]]
657
658
659 (% style="color:blue" %)**BAT & BAT Status :**
660
661 Check the battery voltage.
662
663 Ex1: 0x0B45 = 2885mV
664
665 Ex2: 0x0B49 = 2889mV
666
667
668 (% style="color:blue" %)**TempC_SHT :**
669
670 The temperature detected by the built-in temperature and humidity sensor SHT31.
671
672 If payload is: 0105H:  (0105 & 8000 == 0), temp = 0105H /10 = 26.1 degree
673
674 If payload is: FF3FH :  (FF3F & 8000 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
675
676 (FF3F & 8000: Judge whether the highest bit is 1, when the highest bit is 1, it is negative)
677
678
679 (% style="color:blue" %)**Hum_SHT :**
680
681 The humidity detected by the built-in temperature and humidity sensor SHT31.
682
683 Read:0295(H)=661(D)    Value:  661 / 10=66.1, So 66.1%
684
685
686 (% style="color:blue" %)**Status & Ext :**
687
688 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:500px" %)
689 |(% 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]**
690 |(% 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)
691
692 * (% style="color:#037691" %)**Poll Message Flag:**(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
693 * (% 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.
694 * (% 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)
695
696 (% style="color:blue" %)**Exti_pin_level : **
697
698 * (% style="color:#037691" %)**Wet contacts:**(%%) high and low levels . 1: high level; 0: low level.
699 * (% style="color:#037691" %)**Dry contacts:**(%%)  1: closed; 0: open
700
701 (% style="color:blue" %)**Exti_status :**
702
703 Determines whether the uplink packet is generated by an interrupt.
704
705 1: Interrupt packet
706
707 0: Normal TDC uplink packet
708
709
710 (% style="color:blue" %)**senseless :**
711
712 Reserved position, meaningless. The value is fixed to 0x7FFF.
713
714
715 ==== 2.4.6.7 Ext~=8 Counting Mode(Since Firmware v1.3) ====
716
717
718 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N/S will count for every interrupt and uplink periodically.**
719
720
721 (% 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.
722
723 [[image:image-20220906101320-4.png||_mstalt="427336" height="366" width="698"]]
724
725
726 (% 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
727
728 [[image:image-20220906101320-5.png||_mstalt="427700" height="353" width="696"]]
729
730
731 Ext=8, Counting Sensor ( 4 bytes)：
732
733 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:330px" %)
734 |(% style="width:131px" %)(((
735 **AT+EXT=8,0**
736 )))|(% style="width:195px" %)(((
737 **Count at falling interrupt**
738 )))
739 |(% style="width:131px" %)(((
740 **AT+EXT=8,1**
741 )))|(% style="width:195px" %)(((
742 **Count at rising interrupt**
743 )))
744 |(% style="width:131px" %)(((
745 **AT+SETCNT=60**
746 )))|(% style="width:195px" %)(((
747 **Sent current count to 60**
748 )))
749
750 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:420px" %)
751 |=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
752 **Size(bytes)**
753 )))|=(% style="width: 80px;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 **2**
759 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
760 1
761 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
762 4
763 )))
764 |(% style="width:110px" %)(((
765 Value
766 )))|(% style="width:71px" %)(((
767 BAT & BAT Status
768 )))|(% style="width:99px" %)TempC_SHT|(% style="width:132px" %)Hum_SHT|(% style="width:54px" %)(((
769 Status & Ext
770 )))|(% style="width:64px" %)Exit_count
771
772 [[image:image-20220906101320-6.png||_mstalt="428064"]]
773
774
775 (% style="color:blue" %)**A2 downlink Command：**
776
777 A2 02:  Same as AT+EXT=2 (AT+EXT= second byte)
778
779 A2 06 01 F4:  Same as AT+EXT=6,500 (AT+EXT= second byte, third and fourth bytes)
780
781 A2 04 02:  Same as AT+EXT=4,2 (AT+EXT= second byte, third byte)
782
783 A2 08 01 00:  Same as AT+EXT=8,0 (AT+EXT= second byte, fourth byte)
784
785 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)
786
787
788 ==== 2.4.6.8 Ext~=10, E2 sensor (TMP117)with Unix Timestamp(Since firmware V1.3.2) ====
789
790
791 (((
792 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:
793 )))
794
795 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:480px" %)
796 |=(% style="width: 50px;background-color:#4F81BD;color:white" %)(((
797 **Size(bytes)**
798 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
799 **2**
800 )))|=(% style="width: 120px;background-color:#4F81BD;color:white" %)(((
801 **2**
802 )))|=(% style="width: 120px;background-color:#4F81BD;color:white" %)(((
803 **2**
804 )))|=(% style="width: 50px;background-color:#4F81BD;color:white" %)(((
805 **1**
806 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
807 **4**
808 )))
809 |(% style="width:110px" %)(((
810 Value
811 )))|(% style="width:71px" %)(((
812 External temperature
813 )))|(% style="width:99px" %)(((
814 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
815 )))|(% style="width:132px" %)(((
816 BAT Status & [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
817 )))|(% style="width:54px" %)(((
818 Status & Ext
819 )))|(% style="width:64px" %)(((
820 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp"]]
821 )))
822
823 * **Battery status & Built-in Humidity**
824
825 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:461px" %)
826 |=(% 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]
827 |(% style="width:67px" %)Value|(% style="width:256px" %)(((
828 BAT Status
829 00(b): Ultra Low ( BAT <= 2.50v)
830 01(b): Low  (2.50v <=BAT <= 2.55v)
831 10(b): OK   (2.55v <= BAT <=2.65v)
832 11(b): Good   (BAT >= 2.65v)
833 )))|(% style="width:132px" %)(((
834 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
835 )))
836
837 * **Status & Ext Byte**
838
839 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:500px" %)
840 |(% 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]**
841 |(% 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)
842
843 * (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
844 * (% 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.
845 * (% 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)
846
847 == 2.5 Show data on Datacake ==
848
849
850 (((
851 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:
852 )))
853
854
855 (((
856 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the LoRaWAN network.
857 )))
858
859 (((
860 (% 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.
861 )))
862
863
864 (((
865 Add Datacake:
866 )))
867
868 [[image:image-20220523000825-7.png||_mstalt="429884" height="262" width="583"]]
869
870
871 Select default key as Access Key:
872
873
874 [[image:image-20220523000825-8.png||_mstalt="430248" height="453" width="406"]]
875
876
877 In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/]]) , add LHT65 device.
878
879 [[image:image-20220523000825-9.png||_mstalt="430612" height="366" width="392"]]
880
881
882 [[image:image-20220523000825-10.png||_mstalt="450619" height="413" width="728"]]
883
884
885 == 2.6 Datalog Feature ==
886
887
888 (((
889 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.
890 )))
891
892
893 === 2.6.1 Ways to get datalog via LoRaWAN ===
894
895
896 There are two methods:
897
898 (% style="color:blue" %)**Method 1:** (%%)IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specified time range.
899
900
901 (% style="color:blue" %)**Method 2: **(%%)Set [[PNACKMD=1>>||anchor="H4.13AutoSendNone-ACKmessages"]], 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.
902
903
904 (% style="color:red" %)**Note for method 2:**
905
906 * a) LHT65N/S will do an ACK check for data records sending to make sure every data arrive server.
907 * 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.
908
909 Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
910
911 [[image:image-20220703111700-2.png||_mstalt="426244" height="381" width="1119"]]
912
913
914 === 2.6.2 Unix TimeStamp ===
915
916
917 LHT65N/S uses Unix TimeStamp format based on
918
919
920 [[image:image-20220523001219-11.png||_mstalt="450450" height="97" width="627"]]
921
922
923 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :
924
925 Below is the converter example
926
927 [[image:image-20220523001219-12.png||_mstalt="450827" height="298" width="720"]]
928
929
930 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
931
932
933 === 2.6.3 Set Device Time ===
934
935
936 (((
937 (% style="color:blue" %)**There are two ways to set device's time:**
938 )))
939
940 (((
941 **1.  Through LoRaWAN MAC Command (Default settings)**
942 )))
943
944 (((
945 User need to set SYNCMOD=1 to enable sync time via MAC command.
946 )))
947
948 (((
949 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).
950 )))
951
952 (((
953 (% 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.**
954 )))
955
956
957 (((
958 **2. Manually Set Time**
959 )))
960
961 (((
962 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
963 )))
964
965
966 === 2.6.4 Poll sensor value ===
967
968
969 User can poll sensor value based on timestamps from the server. Below is the downlink command.
970
971 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:428px" %)
972 |(% 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**
973 |(% style="width:58px" %)31|(% style="width:128px" %)Timestamp start|(% style="width:123px" %)Timestamp end|(% style="width:116px" %)Uplink Interval
974
975 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.
976
977 For example, downlink command (% _mstmutation="1" %)**31 5FC5F350 5FC6 0160 05**(%%)
978
979 Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00's data
980
981 Uplink Internal =5s, means LHT65N/S will send one packet every 5s. range 5~~255s.
982
983
984 === 2.6.5 Datalog Uplink payload ===
985
986
987 The Datalog poll reply uplink will use below payload format.
988
989 **Retrieval data payload:**
990
991 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:480px" %)
992 |=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
993 **Size(bytes)**
994 )))|=(% 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**
995 |(% 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"]]
996
997 **Poll message flag & Ext:**
998
999 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:500px" %)
1000 |(% 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]**
1001 |(% 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)
1002
1003 (% style="color:blue" %)**No ACK Message**(%%):  1: This message means this payload is fromn Uplink Message which doesn't get ACK from the server before ( for [[PNACKMD=1>>||anchor="H4.13AutoSendNone-ACKmessages"]] feature)
1004
1005 (% style="color:blue" %)**Poll Message Flag**(%%): 1: This message is a poll message reply.
1006
1007 * Poll Message Flag is set to 1.
1008
1009 * Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
1010
1011 For example, in US915 band, the max payload for different DR is:
1012
1013 (% style="color:blue" %)**a) DR0:** (%%)max is 11 bytes so one entry of data
1014
1015 (% style="color:blue" %)**b) DR1:**(%%) max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
1016
1017 (% style="color:blue" %)**c) DR2:**(%%) total payload includes 11 entries of data
1018
1019 (% style="color:blue" %)**d) DR3: **(%%)total payload includes 22 entries of data.
1020
1021 If devise doesn't have any data in the polling time. Device will uplink 11 bytes of 0   
1022
1023
1024 **Example:**
1025
1026 If LHT65N/S has below data inside Flash:
1027
1028 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
1029 |=(% 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**
1030 |(% 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
1031 |(% 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
1032 |(% 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
1033 |(% 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
1034 |(% 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
1035 |(% 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
1036 |(% 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
1037 |(% 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
1038
1039 If user sends below downlink command: (% style="background-color:yellow" %)3160065F9760066DA705
1040
1041 Where : Start time: 60065F97 = time 21/1/19 04:27:03
1042
1043 Stop time: 60066DA7= time 21/1/19 05:27:03
1044
1045
1046 **LHT65N/S will uplink this payload.**
1047
1048 [[image:image-20220523001219-13.png||_mstalt="451204" height="421" style="text-align:left" width="727"]]
1049
1050
1051 __**7FFF089801464160065F97**__ **__7FFF__ __088E__ __014B__ __41__ __60066009__** 7FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
1052
1053 Where the first 11 bytes is for the first entry:
1054
1055 7FFF089801464160065F97
1056
1057 Ext sensor data=0x7FFF/100=327.67
1058
1059 Temp=0x088E/100=22.00
1060
1061 Hum=0x014B/10=32.6
1062
1063 poll message flag & Ext=0x41,means reply data,Ext=1
1064
1065 Unix time is 0x60066009=1611030423s=21/1/19 04:27:03
1066
1067
1068 == 2.7 Alarm Mode & Feature "Multi sampling, one uplink" ==
1069
1070
1071 (((
1072 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.
1073 )))
1074
1075 (((
1076 (% style="color:red" %)**Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.**
1077
1078
1079 === 2.7.1 ALARM MODE ( Since v1.3.1 firmware) ===
1080
1081 (((
1082 (% class="box infomessage" %)
1083 (((
1084 **AT+LEDALARM=1** :       Enable LED visual Alarm.  (% style="color:#4f81bd" %)**Downlink Command: 3601**
1085 )))
1086 )))
1087
1088 **DS18B20 and TMP117 Threshold Alarm(The mod1 use for external sensors （DS18B20 and TMP117 )**
1089
1090 **~ AT+WMOD=1,60,-10,20**
1091
1092
1093 Explain:
1094
1095 * (% style="color:#037691" %)**parameter1: **(%%)Set Working Mode to **Mode 1，Threshold Alarm（Out of range alarm）**
1096 * (% style="color:#037691" %)**parameter2:**(%%) Sampling Interval is **60**s.
1097 * (% style="color:#037691" %)**parameter3 & parameter4: **(%%)Temperature alarm range is **-10** to 20°C（Set the temperature range value with a coefficient of 100）
1098
1099 (% style="color:#4f81bd" %)**Downlink Command:**
1100
1101 **Example: **A5013CFC1807D0
1102
1103 MOD=01
1104
1105 CITEMP=3C(S) =60(S)
1106
1107 TEMPlow=FC18 = -1000/100=-10(℃)
1108
1109 TEMPhigh=07D0=2000/100=20(℃)
1110
1111
1112 **Fluctuation alarm for DS18B20 and TMP117(Acquisition time: minimum 1s)(The mod2 use for external sensors （DS18B20 and TMP117)**
1113
1114 **AT+WMOD=2,60,5** 
1115
1116 Explain:
1117
1118 * (% style="color:#037691" %)**parameter1: **(%%)Set Working Mode to **Mode 2，Fluctuation alarm**
1119 * (% style="color:#037691" %)**parameter2:**(%%) Sampling Interval is **60**s.
1120 * (% style="color:#037691" %)**parameter3: **(%%)The temperature fluctuation is +-5 °C
1121
1122 (% style="color:#4f81bd" %)**Downlink Command**
1123
1124 **Example: **A5023C05
1125
1126 MOD=02
1127
1128 CITEMP=3C(S)=60(S)
1129
1130 temperature fluctuation=05(℃)
1131
1132
1133 **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)**
1134
1135 **AT+WMOD=3,1,60,20,-16,32,1**   
1136
1137 Explain:
1138
1139 * (% style="color:#037691" %)**parameter1: **(%%)Set Working Mode to **Mode 3，Sampling multiple times and uplink together**
1140 * (% style="color:#037691" %)**parameter2:**(%%) Set the temperature sampling mode to** 1**(1:DS18B20;2:TMP117;3:** **Internal GXHT30).
1141 * (% style="color:#037691" %)**parameter3: **(%%)Sampling Interval is **60**s.(This parameter has no effect on internal sensors)
1142 * (% 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)
1143 * (% style="color:#037691" %)**parameter5 & parameter6: **(%%)Temperature alarm range is **-16** to **32**°C,
1144 * (% 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.
1145
1146 (% style="color:#4f81bd" %)**Downlink Command:**
1147
1148 **Example: **A50301003C14FFF0002001
1149
1150 MOD=03
1151
1152 TEMP=DS18B20
1153
1154 CITEMP=003C(S)=60(S)
1155
1156 Total number of acquisitions=14
1157
1158 TEMPlow=FFF0=-16(℃)
1159
1160 TEMPhigh=0020=20(℃)
1161
1162 ARTEMP=01
1163
1164
1165 **Uplink payload( Fport=3)**
1166
1167 **Example: CBEA**01**0992**//0A41//**09C4**
1168
1169 BatV=CBEA
1170
1171 TEMP=DS18B20
1172
1173 Temp1=0992  ~/~/ 24.50℃
1174
1175 Temp2=0A41  ~/~/ 26.25℃
1176
1177 Temp3=09C4  ~/~/ 25.00℃
1178
1179 (% style="color:red" %)**Note: This uplink will automatically select the appropriate DR according to the data length**
1180
1181 (% style="color:red" %)** In this mode, the temperature resolution of ds18b20 is 0.25℃ to save power consumption**
1182 )))
1183
1184
1185 === 2.7.2 ALARM MODE ( Before v1.3.1 firmware) ===
1186
1187
1188 (% class="box infomessage" %)
1189 (((
1190 (((
1191 **AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)
1192 )))
1193
1194 (((
1195 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
1196 )))
1197
1198 (((
1199 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
1200 )))
1201
1202 (((
1203 (% _mstmutation="1" %)**AT+ARTEMP=? **(%%):  Gets the alarm range of the internal temperature sensor(% style="display:none" %)
1204 )))
1205
1206 (((
1207 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
1208 )))
1209 )))
1210
1211 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
1212
1213 Total bytes: 8 bytes
1214
1215 **Example:**AA0100010001003C
1216
1217 WMOD=01
1218
1219 CITEMP=0001
1220
1221 TEMPlow=0001
1222
1223 TEMPhigh=003C
1224
1225
1226 == 2.8 LED Indicator ==
1227
1228
1229 The LHT65 has a triple color LED which for easy showing different stage .
1230
1231 While user press ACT button, the LED will work as per LED status with ACT button.
1232
1233 In a normal working state:
1234
1235 * For each uplink, the BLUE LED or RED LED will blink once.
1236 BLUE LED when external sensor is connected.
1237 * RED LED when external sensor is not connected
1238 * For each success downlink, the PURPLE LED will blink once
1239
1240 == 2.9 installation ==
1241
1242
1243 [[image:image-20220516231650-1.png||_mstalt="428597" height="436" width="428"]]
1244
1245
1246 = 3. Sensors and Accessories =
1247
1248 == 3.1 E2 Extension Cable ==
1249
1250
1251 [[image:image-20220619092222-1.png||_mstalt="429533" height="182" width="188"]][[image:image-20220619092313-2.png||_mstalt="430222" height="182" width="173"]]
1252
1253
1254 **1m long breakout cable for LHT65N/S. Features:**
1255
1256 * (((
1257 Use for AT Command, works for both LHT52, LHT65N/S
1258 )))
1259 * (((
1260 Update firmware for LHT65N/S, works for both LHT52, LHT65N/S
1261 )))
1262 * (((
1263 Supports ADC mode to monitor external ADC
1264 )))
1265 * (((
1266 Supports Interrupt mode
1267 )))
1268 * (((
1269 Exposed All pins from the LHT65N/S Type-C connector.
1270
1271
1272
1273 )))
1274
1275 [[image:image-20220619092421-3.png||_mstalt="430547" height="371" width="529"]]
1276
1277
1278 == 3.2 E3 Temperature Probe ==
1279
1280
1281 [[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"]]
1282
1283
1284 Temperature sensor with 2 meters cable long
1285
1286 * Resolution: 0.0625 °C
1287 * ±0.5°C accuracy from -10°C to +85°C
1288 * ±2°C accuracy from -55°C to +125°C
1289 * Operating Range: -40 ~~ 125 °C
1290 * Working voltage 2.35v ~~ 5v
1291
1292 == 3.3 E31F Temperature Probe ==
1293
1294
1295 [[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" %)
1296
1297
1298 Temperature sensor with 1 meters cable long
1299
1300
1301 **Built-in Temperature Sensor:**
1302
1303 * Resolution: 0.01 °C
1304 * Accuracy Tolerance : Typ ±0.3 °C
1305 * Long Term Drift: < 0.02 °C/yr
1306 * Operating Range: -40 ~~ 80 °C
1307
1308 **Built-in Humidity Sensor:**
1309
1310 * Resolution: 0.04 % RH
1311 * Accuracy Tolerance : Typ ±3 % RH
1312 * Long Term Drift: < 0.25 RH/yr
1313 * Operating Range: 0 ~~ 96 % RH
1314
1315 **External Temperature Sensor :**
1316
1317 * Resolution: 0.01 °C
1318 * Accuracy Tolerance : Typical ±0.3 °C
1319 * Long Term Drift: < 0.02 °C/yr
1320 * Operating Range: -40 ~~ 125 °C
1321
1322 **External Humidity Sensor :**
1323
1324 * Resolution: 0.04 % RH
1325 * Accuracy Tolerance : Typ ±3 % RH
1326 * Long Term Drift: < 0.25 RH/yr
1327 * Operating Range: 0 ~~ 96 % RH
1328
1329 == 3.4 NE117 Temperature Probe (Model: LHT65N/S-NE117) ==
1330
1331
1332 External Temperature Sensor – NE117:
1333 Equip with TMP117A temperature sensor. TMP117 IC is NIST traceability Sensor by TI.
1334
1335 * Silica gel cable
1336 * ±0.1 °C (maximum) from –20 °C to 50 °C
1337 * ±0.2 °C (maximum) from –40 °C to 100 °C
1338 * ±0.3 °C (maximum) from –55 °C to 150 °C
1339
1340 [[image:image-20240422093011-1.png||height="264" width="265"]][[image:image-20250418120031-2.png||height="308" width="211"]]
1341
1342
1343 == 3.5 Dry Contact Probe (Model: LHT65N/S-DC) ==
1344
1345
1346 * Design for Pulse Counting(Ext=8), Alarm (Ext=4),Open/Close Detect (Ext=4)
1347 * 3 wires: VCC/GND/INT
1348 * Cable Lenght: 1 meter
1349
1350 [[image:image-20240705140520-1.png||height="369" width="319"]](% style="display:none" %) (%%) [[image:image-20250418134933-1.png||height="345" width="193"]]
1351
1352 LHT65-DC can be used to connect various types of external sensor. below.
1353
1354 User can refer this link for the instructions: [[LHT65-DC Connection Instruction>>LHT65-DC Connection Instruction]].
1355
1356 [[image:image-20240422100149-5.png||height="163" width="510"]]
1357
1358 [[image:image-20240422100217-6.png||height="141" width="507"]]
1359
1360
1361 == 3.6 Door Sensor (Model: LHT65N-DS) ==
1362
1363
1364 * Aluminum Alloy Door Sensor
1365 * Detect Distance: ~~3cm
1366 * Cable Lenght: 1 meter
1367
1368 **Notice: When order LHT65N-DS, the device is by default set to: a) AT+EXT=4,1 ; b) Default Uplink Interval TDC is 12 hour.**
1369
1370 [[image:image-20240705144054-2.png||height="423" width="343"]]
1371
1372
1373
1374 = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1375
1376
1377 (((
1378 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
1379 )))
1380
1381 * (((
1382 AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
1383 )))
1384
1385 * (((
1386 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
1387 )))
1388
1389 (((
1390 There are two kinds of commands to configure LHT65N, they are:
1391 )))
1392
1393 * (((
1394 (% style="color:#4f81bd" %)**General Commands**.
1395 )))
1396
1397 (((
1398 These commands are to configure:
1399 )))
1400
1401 1. (((
1402 General system settings like: uplink interval.
1403 )))
1404 1. (((
1405 LoRaWAN protocol & radio-related commands.
1406 )))
1407
1408 (((
1409 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]]
1410 )))
1411
1412 * (((
1413 (% style="color:#4f81bd" %)**Commands special design for LHT65N**
1414 )))
1415
1416 (((
1417 These commands are only valid for LHT65N, as below:
1418 )))
1419
1420
1421 == 4.1 Set Transmit Interval Time ==
1422
1423
1424 Feature: Change LoRaWAN End Node Transmit Interval.
1425
1426
1427 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
1428
1429 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:501px" %)
1430 |(% 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**
1431 |(% style="width:155px" %)AT+TDC=?|(% style="width:162px" %)Show current transmit Interval|(% style="width:177px" %)30000 OK the interval is 30000ms = 30s
1432 |(% style="width:155px" %)AT+TDC=60000|(% style="width:162px" %)Set Transmit Interval|(% style="width:177px" %)OK Set transmit interval to 60000ms = 60 seconds
1433
1434 (% style="color:#4f81bd" %)**Downlink Command: 0x01**
1435
1436 Format: Command Code (0x01) followed by 3 bytes time value.
1437
1438 If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.
1439
1440 * **Example 1**: Downlink Payload: 0100001E  ~/~/ Set Transmit Interval (TDC) = 30 seconds
1441
1442 * **Example 2**: Downlink Payload: 0100003C  ~/~/ Set Transmit Interval (TDC) = 60 seconds
1443
1444 == 4.2 Set External Sensor Mode ==
1445
1446
1447 Feature: Change External Sensor Mode.
1448
1449 (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1450
1451 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:500.222px" %)
1452 |(% 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**
1453 |(% style="width:155px" %)AT+EXT=?|(% style="width:151px" %)Get current external sensor mode|(% style="width:158px" %)1 OK External Sensor mode =1
1454 |(% style="width:155px" %)AT+EXT=1|(% colspan="2" rowspan="1" style="width:309px" %)Set external sensor mode to 1|(% style="width:126px" %)A201
1455 |(% style="width:155px" %)AT+EXT=9|(% colspan="2" rowspan="1" style="width:309px" %)Set to external DS18B20 with timestamp|(% style="width:126px" %)A209
1456 |(% 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
1457 |(% 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
1458 |(% 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
1459 |(% 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
1460 |(% 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
1461 |(% 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
1462
1463 **Response**
1464
1465 (% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1466
1467 Total bytes: 2 ~~ 5 bytes
1468
1469 **Example:**
1470
1471 * 0xA201: Set external sensor type to E1
1472
1473 * 0xA209: Same as AT+EXT=9
1474
1475 * 0xA20702003c: Same as AT+SETCNT=60
1476
1477 == 4.3 Enable/Disable uplink DS18B20 Temperature probe ID ==
1478
1479
1480 **Feature**: If PID is enabled, LHT65N will send the DS18B20 temperature probe ID on:
1481
1482 * First Packet after OTAA Join
1483 * Every 24 hours since the first packet.
1484
1485 PID is default set to disable (0)
1486
1487 (% style="color:red" %)**Notice: This feature only valid when EXT=1 or EXt=9**
1488
1489 (% style="color:#4f81bd" %)**AT Command:**
1490
1491 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:381px" %)
1492 |(% 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**
1493 |(% style="width:155px" %)AT+PID=1|(% style="width:136px" %)Enable PID uplink|(% style="width:86px" %)OK
1494
1495 (% style="color:#4f81bd" %)**Downlink Command:**
1496
1497 * **0xA800**  **~-~->** AT+PID=0
1498 * **0xA801**     **~-~->** AT+PID=1
1499
1500 == 4.4 Set Password ==
1501
1502
1503 Feature: Set device password, max 9 digits
1504
1505 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1506
1507 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:372px" %)
1508 |(% 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**
1509 |(% style="width:155px" %)AT+PWORD=?|(% style="width:124px" %)Show password|(% style="width:86px" %)(((
1510 123456
1511
1512 OK
1513 )))
1514 |(% style="width:155px" %)AT+PWORD=999999|(% style="width:124px" %)Set password|(% style="width:86px" %)OK
1515
1516 (% style="color:#4f81bd" %)**Downlink Command:**
1517
1518 No downlink command for this feature.
1519
1520
1521 == 4.5 Quit AT Command ==
1522
1523
1524 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1525
1526 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1527
1528 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:433px" %)
1529 |(% 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**
1530 |(% style="width:155px" %)AT+DISAT|(% style="width:191px" %)Quit AT Commands mode|(% style="width:86px" %)OK
1531
1532 (% style="color:#4f81bd" %)**Downlink Command:**
1533
1534 No downlink command for this feature.
1535
1536
1537 == 4.6 Set to sleep mode ==
1538
1539
1540 Feature: Set device to sleep mode
1541
1542 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1543 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1544
1545 (% style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1546
1547 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:513px" %)
1548 |(% 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**
1549 |(% style="width:155px" %)AT+SLEEP|(% style="width:139px" %)Set to sleep mode|(% style="width:213px" %)(((
1550 Clear all stored sensor data…
1551
1552 OK
1553 )))
1554
1555 (% style="color:#4f81bd" %)**Downlink Command:**
1556
1557 * There is no downlink command to set to Sleep mode.
1558
1559 == 4.7 Set system time ==
1560
1561
1562 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1563
1564 (% style="color:#4f81bd" %)**AT Command:**
1565
1566 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:506px" %)
1567 |(% style="background-color:#4f81bd; color:white; width:188px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:318px" %)**Function**
1568 |(% style="width:154px" %)AT+TIMESTAMP=1611104352|(% style="width:285px" %)(((
1569 OK
1570
1571 Set System time to 2021-01-20 00:59:12
1572 )))
1573
1574 (% style="color:#4f81bd" %)**Downlink Command:**
1575
1576 0x306007806000  ~/~/  Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1577
1578
1579 == 4.8 Set Time Sync Mode ==
1580
1581
1582 (((
1583 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1584 )))
1585
1586 (((
1587 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.
1588 )))
1589
1590 (% style="color:#4f81bd" %)**AT Command:**
1591
1592 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:475px" %)
1593 |(% style="background-color:#4f81bd; color:white; width:158px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:317px" %)**Function**
1594 |(% style="width:156px" %)AT+SYNCMOD=1|(% style="width:315px" %)Enable Sync system time via LoRaWAN MAC Command (DeviceTimeReq)
1595
1596 (% style="color:#4f81bd" %)**Downlink Command:**
1597
1598 0x28 01  ~/~/  Same As AT+SYNCMOD=1
1599 0x28 00  ~/~/  Same As AT+SYNCMOD=0
1600
1601
1602 == 4.9 Set Time Sync Interval ==
1603
1604
1605 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1606
1607 (% style="color:#4f81bd" %)**AT Command:**
1608
1609 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:472px" %)
1610 |(% style="background-color:#4f81bd; color:white; width:158px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:314px" %)**Function**
1611 |(% style="width:156px" %)AT+SYNCTDC=0x0A |(% style="width:311px" %)Set SYNCTDC to 10 (0x0A), so the sync time is 10 days.
1612
1613 (% style="color:#4f81bd" %)**Downlink Command:**
1614
1615 **0x29 0A**  ~/~/ Same as AT+SYNCTDC=0x0A
1616
1617
1618 == 4.10 Get data ==
1619
1620
1621 Feature: Get the current sensor data.
1622
1623 (% style="color:#4f81bd" %)**AT Command:**
1624
1625 * **AT+GETSENSORVALUE=0**      ~/~/ The serial port gets the reading of the current sensor
1626 * **AT+GETSENSORVALUE=1**      ~/~/ The serial port gets the current sensor reading and uploads it.
1627
1628 == 4.11 Print data entries base on page ==
1629
1630
1631 Feature: Print the sector data from start page to stop page (max is 416 pages).
1632
1633 (% style="color:#4f81bd" %)**AT Command: AT+PDTA**
1634
1635 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
1636 |(% style="background-color:#4f81bd; color:white; width:158px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:352px" %)**Function**
1637 |(% style="width:156px" %)(((
1638 AT+PDTA=1,3
1639 Print page 1 to 3
1640 )))|(% style="width:311px" %)(((
1641 8019500 19/6/26 16:48 1 2992 sht temp=28.21 sht hum=71.5 ds temp=27.31
1642 8019510 19/6/26 16:53 1 2994 sht temp=27.64 sht hum=69.3 ds temp=26.93
1643 8019520 19/6/26 16:58 1 2996 sht temp=28.39 sht hum=72.0 ds temp=27.06
1644 8019530 19/6/26 17:03 1 2996 sht temp=27.97 sht hum=70.4 ds temp=27.12
1645 8019540 19/6/26 17:08 1 2996 sht temp=27.80 sht hum=72.9 ds temp=27.06
1646 8019550 19/6/26 17:13 1 2998 sht temp=27.30 sht hum=72.4 ds temp=26.68
1647 8019560 19/6/26 17:22 1 2992 sht temp=26.27 sht hum=62.3 ds temp=26.56
1648 8019570
1649 8019580
1650 8019590
1651 80195A0
1652 80195B0
1653 80195C0
1654 80195D0
1655 80195E0
1656 80195F0
1657
1658 OK
1659 )))
1660
1661 (% style="color:#4f81bd" %)**Downlink Command:**
1662
1663 No downlink commands for feature
1664
1665
1666 == 4.12 Print last few data entries ==
1667
1668
1669 Feature: Print the last few data entries
1670
1671 (% style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1672
1673 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
1674 |(% style="background-color:#4f81bd; color:white; width:158px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:352px" %)**Function**
1675 |(% style="width:156px" %)(((
1676 AT+PLDTA=5
1677 Print last 5 entries
1678 )))|(% style="width:311px" %)(((
1679 Stop Tx and RTP events when read sensor data
1680 1 19/6/26 13:59 1 3005 sht temp=27.09 sht hum=79.5 ds temp=26.75
1681 2 19/6/26 14:04 1 3007 sht temp=26.65 sht hum=74.8 ds temp=26.43
1682 3 19/6/26 14:09 1 3007 sht temp=26.91 sht hum=77.9 ds temp=26.56
1683 4 19/6/26 14:15 1 3007 sht temp=26.93 sht hum=76.7 ds temp=26.75
1684 5 19/6/26 14:20 1 3007 sht temp=26.78 sht hum=76.6 ds temp=26.43
1685 Start Tx and RTP events
1686 OK
1687 )))
1688
1689 (% style="color:#4f81bd" %)**Downlink Command:**
1690
1691 No downlink commands for feature
1692
1693
1694 == 4.13 Clear Flash Record ==
1695
1696
1697 Feature: Clear flash storage for data log feature.
1698
1699 (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1700
1701 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:503px" %)
1702 |(% 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**
1703 |(% style="width:155px" %)AT+CLRDTA |(% style="width:134px" %)Clear date record|(% style="width:209px" %)(((
1704 Clear all stored sensor data…
1705
1706 OK
1707 )))
1708
1709 (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1710
1711 * Example: 0xA301  ~/~/  Same as AT+CLRDTA
1712
1713 == 4.14 Auto Send None-ACK messages ==
1714
1715
1716 Feature: LHT65N will wait for ACK for each uplink, If LHT65N doesn't get ACK from the IoT server, it will consider the message doesn't arrive server and store it. LHT65N keeps sending messages in normal periodically. Once LHT65N gets ACK from a server, it will consider the network is ok and start to send the not-arrive message.
1717
1718 (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1719
1720 The default factory setting is 0
1721
1722 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:367px" %)
1723 |=(% 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**
1724 |(% style="width:158px" %)AT+PNACKMD=1|(% style="width:118px" %)Poll None-ACK message|(% style="width:87px" %)OK
1725
1726 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1727
1728 * Example: 0x3401  ~/~/  Same as AT+PNACKMD=1
1729
1730 == 4.15 Modified WMOD command for external sensor TMP117 or DS18B20 temperature alarm(Since firmware 1.3.0) ==
1731
1732
1733 Feature: Set internal and external temperature sensor alarms.
1734
1735 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:500px" %)
1736 |=(% 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**
1737 |(% style="width:268px" %)AT+WMOD=parameter1,parameter2,parameter3,parameter4|(% style="width:255px" %)Set internal and external temperature sensor alarms|(% style="width:181px" %)OK
1738
1739 (% style="color:#037691" %)**AT+WMOD=parameter1,parameter2,parameter3,parameter4**
1740
1741 (% style="color:#037691" %)**Parameter 1**(%%):  Alarm mode:
1742
1743 0): Cancel
1744
1745 1): Threshold alarm
1746
1747 2): Fluctuation alarm
1748
1749 3): Sampling multiple times and uplink together
1750
1751
1752 (% style="color:#037691" %)** Parameter 2**(%%):  Sampling time. Unit: seconds, up to 255 seconds.
1753
1754 (% 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.**
1755
1756
1757 (% style="color:#037691" %) **Parameter 3 and parameter 4:**
1758
1759 **1):  If Alarm Mode is set to 1:** Parameter 3 and parameter 4 are valid, as before, they represent low temperature and high temperature.
1760
1761 Such as AT+WMOD=1,60,45,105, it means high and low temperature alarm.
1762
1763
1764 **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.
1765
1766 Such as AT+WMOD=2,10,2,it means that it is a fluctuation alarm.
1767
1768 If the difference between the current collected temperature and the last Uplin is ±2 degrees, the alarm will be issued.
1769
1770
1771 **3): If Alarm Mode is set to 3:**
1772
1773 * (% style="color:#037691" %)**parameter1: **(%%)Set Working Mode to **Mode 3**
1774 * (% style="color:#037691" %)**parameter2:**(%%) Set the temperature sampling mode to** 1**(1:DS18B20;2:TMP117;3:** **Internal GXHT30).
1775 * (% style="color:#037691" %)**parameter3: **(%%)Sampling Interval is **60**s.
1776 * (% 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)
1777 * (% style="color:#037691" %)**parameter5 & parameter6: **(%%)Temperature alarm range is **-16** to **32**°C,
1778 * (% 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.
1779
1780 (% style="color:#4f81bd" %)**Downlink Command: 0xA5**
1781
1782 0xA5 00 ~-~- AT+WMOD=0.
1783
1784 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 )
1785
1786 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))
1787
1788 0xA5 02 0A 02 ~-~- AT+WMOD=2,10,2  (AT+WMOD = second byte, third byte, fourth byte)
1789
1790 0xA5 03 01 00 3C 14 FF F0 00 20 01~-~-AT+WMOD=3,1,60,20,-16,32,1
1791
1792 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.
1793
1794
1795 == 4.16 Get Firmware Version Info(Since V1.4.0) ==
1796
1797
1798 Feature: use downlink to get firmware version.
1799
1800 (% style="color:#4f81bd" %)**Downlink Command: 0x2601**
1801
1802 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:360px" %)
1803 |=(% 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)**
1804 |(% style="width:90px" %)Get Firmware Version Info|(% style="width:90px" %)Any|(% style="width:90px" %)26|(% style="width:90px" %)2
1805
1806 Device will reply with firmware version info, device info. frequency band info. detail please check device user manual.
1807
1808 Total 7 bytes Example(**FPort=5**): [[image:image-20240605120110-2.png]]
1809
1810 (% style="color:#037691" %)**Sensor model**
1811
1812 0x0b: LHT65N
1813
1814
1815 (% style="color:#037691" %)**Firmware version**
1816
1817 firm_ver=(bytes[1]&0x0f)+'.'+(bytes[2]>>4&0x0f)+'.'+(bytes[2]&0xOf);
1818
1819 Example: 0x0140=V1.4.0
1820
1821
1822 (% style="color:#037691" %)** Frequency Band:**
1823
1824 * 0x01: EU868
1825 * 0x02: US915
1826 * 0x03: IN865
1827 * 0x04: AU915
1828 * 0x05: KZ865
1829 * 0x06: RU864
1830 * 0x07: AS923
1831 * 0x08: AS923-1
1832 * 0x09: AS923-2
1833 * 0xa0: AS923-3
1834
1835 (% style="color:#037691" %)**Subband**
1836
1837 value 0x00 ~~ 0x08
1838
1839 Example: 0xFF ~-~--> " NULL"
1840
1841
1842 (% style="color:#037691" %)**Battery**
1843
1844 Ex1:  0x0C4E(H) = 3150(D) = 3150mV =3.15V
1845
1846 Ex2:  0x0CF8(H) = 3320(D) = 3320mV =3.32V
1847
1848
1849 == 4.17 Setting LEDAlarm ==
1850
1851 Feature: Setting LEDAlarm
1852
1853 The default factory setting is 0
1854
1855 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:367px" %)
1856 |=(% 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**
1857 |(% style="width:158px" %)AT+LEDALARM=1|(% style="width:118px" %)Setting LEDAlarm|(% style="width:87px" %)OK
1858
1859 (% style="color:#4f81bd" %)**Downlink Command: 0x3601**
1860
1861 (% style="color:red" %)**Note: This alarm range is controlled by AT+ARTEMP. You need to set AT+WMOD=1 before use. **
1862
1863 = 5. Battery & How to replace =
1864
1865 == 5.1 Battery Type ==
1866
1867
1868 (((
1869 LHT65N is equipped with a 2400mAH Li-MnO2 (CR17505) battery . The battery is an un-rechargeable battery with low discharge rate targeting for up to 8~~10 years use. This type of battery is commonly used in IoT devices for long-term running, such as water meters.
1870 )))
1871
1872 (((
1873 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1874
1875 [[image:image-20220515075034-1.png||_mstalt="428961" height="208" width="644"]]
1876 )))
1877
1878 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1879
1880
1881 == 5.2 Replace Battery ==
1882
1883
1884 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.
1885
1886 [[image:image-20220515075440-2.png||_mstalt="429546" height="338" width="272"]][[image:image-20220515075625-3.png||_mstalt="431574" height="193" width="257"]]
1887
1888
1889 == 5.3 Battery Life Analyze ==
1890
1891
1892 (((
1893 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:
1894 [[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]]
1895 )))
1896
1897
1898 (((
1899 A full detail test report for LHT65N on different frequency can be found at : [[https:~~/~~/www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0>>https://www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0]]
1900 )))
1901
1902
1903 = 6. FAQ =
1904
1905 == 6.1 How to connect to LHT65N UART interface? ==
1906
1907
1908 The LHT65N has the UART interface in its Type-C. The UART Interface can be used for
1909
1910 * Send AT Commands, and get output from LHT65N
1911 * Upgrade firmwre of LHT65N.
1912
1913 The hardware connection is: **PC <~-~-> USB to TTL Adapter <~-~-> Jump wires <~-~-> Type-C Adapter <~-~-> LHT65N**
1914
1915
1916 **Option of USB TTL adapter:**
1917
1918 * CP2101 USB TTL Adapter
1919 * CH340 USB TTL Adapter
1920 * FT232 USB TTL Adapter
1921
1922 **Option of Type-C Adapter:**
1923
1924 [[image:image-20240122103221-3.png||_mstalt="425594" height="694" width="1039"]]
1925
1926
1927 **Connection:**
1928
1929 * (% style="background-color:yellow" %)**USB to TTL GND <~-~-> LHT65N GND**
1930 * (% style="background-color:yellow" %)**USB to TTL RXD <~-~-> LHT65N TXD**
1931 * (% style="background-color:yellow" %)**USB to TTL TXD <~-~-> LHT65N RXD**
1932
1933 (((
1934
1935
1936 Connection Example:
1937
1938 [[image:1655802313617-381.png||_mstalt="293917"]]
1939
1940
1941 [[image:image-20240122092100-1.jpeg||_mstalt="467389" height="466" width="643"]]
1942
1943
1944 == 6.2 How to use AT Commands? ==
1945
1946
1947 First, Connect PC and LHT65N via USB TTL adapter as **FAQ 6.1**
1948
1949 In PC, User needs to set serial tool(such as [[**putty**>>https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to (% style="color:green" %)**9600**(%%) to access to access serial console for LHT65N. The AT commands are disable by default and need to enter password (default:(% style="color:green" %)**123456**) (%%)to active it. Timeout to input AT Command is 5 min, after 5-minute, user need to input password again. User can use AT+DISAT command to disable AT command before timeout.
1950 )))
1951
1952
1953 Input password and ATZ to activate LHT65N,As shown below:
1954
1955 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1956
1957
1958 AT Command List is as below:
1959
1960 AT+<CMD>? :  Help on <CMD>
1961
1962 AT+<CMD> :  Run <CMD>
1963
1964 AT+<CMD>=<value> :  Set the value
1965
1966 AT+<CMD>=? :  Get the value
1967
1968 AT+DEBUG:  Set more info output
1969
1970 ATZ:  Trig a reset of the MCU
1971
1972 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1973
1974 AT+DEUI:  Get or Set the Device EUI
1975
1976 AT+DADDR:  Get or Set the Device Address
1977
1978 AT+APPKEY:  Get or Set the Application Key
1979
1980 AT+NWKSKEY:  Get or Set the Network Session Key
1981
1982 AT+APPSKEY:  Get or Set the Application Session Key
1983
1984 AT+APPEUI:  Get or Set the Application EUI
1985
1986 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1987
1988 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1989
1990 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1991
1992 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1993
1994 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1995
1996 AT+RX2FQ:  Get or Set the Rx2 window frequency
1997
1998 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1999
2000 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
2001
2002 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
2003
2004 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
2005
2006 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
2007
2008 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
2009
2010 AT+NWKID:  Get or Set the Network ID
2011
2012 AT+FCU:  Get or Set the Frame Counter Uplink
2013
2014 AT+FCD:  Get or Set the Frame Counter Downlink
2015
2016 AT+CLASS:  Get or Set the Device Class
2017
2018 AT+JOIN:  Join network
2019
2020 AT+NJS:  Get the join status
2021
2022 AT+SENDB:  Send hexadecimal data along with the application port
2023
2024 AT+SEND:  Send text data along with the application port
2025
2026 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
2027
2028 AT+RECV:  Print last received data in raw format
2029
2030 AT+VER:  Get current image version and Frequency Band
2031
2032 AT+CFM:  Get or Set the confirmation mode (0-1)
2033
2034 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
2035
2036 AT+SNR:  Get the SNR of the last received packet
2037
2038 AT+RSSI:  Get the RSSI of the last received packet
2039
2040 AT+TDC:  Get or set the application data transmission interval in ms
2041
2042 AT+PORT:  Get or set the application port
2043
2044 AT+DISAT:  Disable AT commands
2045
2046 AT+PWORD: Set password, max 9 digits
2047
2048 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
2049
2050 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
2051
2052 AT+PDTA:  Print the sector data from start page to stop page
2053
2054 AT+PLDTA:  Print the last few sets of data
2055
2056 AT+CLRDTA:  Clear the storage, record position back to 1st
2057
2058 AT+SLEEP:  Set sleep mode
2059
2060 AT+EXT:  Get or Set external sensor model
2061
2062 AT+BAT:  Get the current battery voltage in mV
2063
2064 AT+CFG:  Print all configurations
2065
2066 AT+WMOD:  Get or Set Work Mode
2067
2068 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
2069
2070 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
2071
2072 AT+SETCNT:  Set the count at present
2073
2074 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
2075
2076 AT+RPL:  Get or set response level
2077
2078 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
2079
2080 AT+LEAPSEC:  Get or Set Leap Second
2081
2082 AT+SYNCMOD:  Get or Set time synchronization method
2083
2084 AT+SYNCTDC:  Get or set time synchronization interval in day
2085
2086 AT+PID:  Get or set the PID
2087
2088
2089 == 6.3 How to use Downlink commands? ==
2090
2091
2092 **Downlink commands:**
2093
2094
2095 (% style="color:blue" %)**TTN:**
2096
2097 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
2098
2099
2100
2101 (% style="color:blue" %)**Helium: **
2102
2103 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
2104
2105
2106
2107 (% style="color:blue" %)**Chirpstack: The downlink window will not be displayed until the network is accessed**
2108
2109
2110 [[image:image-20220615094850-6.png||_mstalt="433082"]]
2111
2112
2113 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
2114
2115
2116
2117 (% style="color:blue" %)**AWS-IOT :**
2118
2119 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
2120
2121
2122 == 6.4 How to change the uplink interval? ==
2123
2124
2125 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);"]]
2126
2127
2128 == 6.5 How to upgrade firmware? ==
2129
2130
2131 The firmware (% style="color:blue" %)**before V1.4**(%%) does not have wireless upgrade function, and the starting address of the firmware is **0x08000000**.
2132 (% style="color:blue" %)**Since and including V1.4**(%%), LHT65N supports wireless upgrade, and its firmware is divided into **bootloader + working firmware**. Burning bootloader selects address** 0x08000000**, and burning working firmware selects address **0x0800D000**.
2133
2134
2135 LHT65N has two types of firmware: **Firmware with bootloader** and **Firmware without bootloader**.** [[Firmware Download Link>>https://www.dropbox.com/sh/gvoto921a75q6rx/AADaaspjTtikr9X82Ma2S5w4a?dl=0]]**:
2136
2137
2138 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:
2139
2140 [[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"]]
2141
2142 [[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"]]
2143
2144 (% 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.**
2145
2146 * For the connection ** E2 cable <~-~-~-~-> USB-TTL adapter**:
2147
2148 (% style="background-color:yellow" %)** Port 4(Blue wire)<~-~-~-~->USB-TTL 3V3**
2149
2150 [[image:image-20240720093846-3.jpeg||height="433" width="742"]]
2151
2152 * For the connection  **USB Type-C Extender<~-~-~-~->USB-TTL adapter**:
2153
2154 (% style="background-color:yellow" %)**Pin 6<~-~-~-~->USB-TTL 3V3**
2155
2156 [[image:image-20240720093332-1.jpeg||height="378" width="644"]]
2157
2158 === 6.5.1 Burning firmware before V1.3 (including V1.3) ===
2159
2160
2161 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
2162
2163 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".**
2164
2165 [[image:image-20240716174308-1.png||height="523" width="410"]]
2166
2167
2168 === 6.5.2 Updated firmware for V1.4 and above ===
2169
2170
2171 Updating firmware version V1.4 and above requires distinguishing whether the firmware comes with a bootloader or not.
2172
2173 * 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.
2174 * For nodes where the bootloader was accidentally erased, customers need to burn the bootloader and working firmware using** TremoProgrammer**.
2175
2176 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.
2177
2178
2179 ==== 6.5.2.1 Update firmware (Assume device already have bootloader) ====
2180
2181
2182 (% style="color:blue" %)**Step1 : Connect UART as per FAQ 6.1**
2183
2184 (% 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.**
2185
2186
2187 (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/]]**
2188
2189
2190 ==== 6.5.2.2 Update firmware (Assume device doesn't have bootloader) ====
2191
2192
2193 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.
2194
2195 (% style="color:blue" %)**Step1**(%%): Install [[TremoProgrammer>>https://www.dropbox.com/scl/fo/gk1rb5pnnjw4kv5m5cs0z/h?rlkey=906ouvgbvif721f9bj795vfrh&dl=0]]  first.
2196
2197 [[image:image-20220615170542-5.png||_mstalt="430638"]]
2198
2199
2200
2201 (% _mstmutation="1" style="color:blue" %)**Step2**(%%): Hardware Connection
2202
2203 Connect PC and LHT65N via USB TTL adapter .
2204
2205 (% style="color:red" %)**Note: Burn mode: Port4 (BOOT_CTL) of E2 cable connects 3V3 of USB-TTL.**
2206
2207 **Connection method:**
2208
2209 (% style="background-color:yellow" %)**USB-TTL GND <~-~-> Port 1 of E2 cable**
2210
2211 (% style="background-color:yellow" %)**USB-TTL 3V3 <~-~-> Port 4 of E2 cable**
2212
2213 (% style="background-color:yellow" %)**USB-TTL TXD <~-~-> Port 9 of E2 cable**
2214
2215 (% style="background-color:yellow" %)**USB-TTL RXD <~-~-> Port 5 of E2 cable**
2216
2217 [[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"]]
2218
2219
2220 (% style="color:blue" %)**Step3: **(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
2221
2222 [[image:image-20220615171334-6.png||_mstalt="431028"]]
2223
2224
2225 **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.
2226
2227 Then click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
2228
2229
2230 When this interface appears, it indicates that the download has been completed.
2231
2232 [[image:image-20220620160723-8.png||_mstalt="430703"]]
2233
2234
2235 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.
2236
2237
2238 == 6.6 Why can't I see the datalog information ==
2239
2240
2241 ~1. The time is not aligned, and the correct query command is not used.
2242
2243 2. Decoder error, did not parse the datalog data, the data was filtered.
2244
2245
2246 == 6.7 How can i read sensor data without LoRaWAN? For Calibration Purpose ==
2247
2248
2249 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"]]
2250
2251 [[image:image-20240122092100-1.jpeg||_mstalt="467389" height="346" width="476"]]
2252
2253
2254 After there is UART Connectio, run below commands:
2255
2256 1.** AT+NJM=0**   ~/~/ Set Device to ABP mode , so can works without join to LoRaWAN server.
2257
2258 2.** AT+GETSENSORVALUE=0**  ~/~/The serial port gets the reading of the current sensor.
2259
2260 Example output:
2261
2262 [[image:image-20240128093852-1.png||_mstalt="431912" height="235" width="552"]]
2263
2264
2265 = 7. Order Info =
2266
2267
2268 Part Number: (% style="color:#4f81bd" %)** LHT65N-XX-YY**
2269
2270 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
2271
2272 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
2273 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
2274 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
2275 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
2276 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
2277 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**US915**(%%): LoRaWAN US915 band
2278 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
2279 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
2280
2281 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
2282
2283 * (% style="color:red" %)**E3**(%%): External Temperature Probe
2284
2285 = 8. Packing Info =
2286
2287
2288 **Package Includes**:
2289
2290 * LHT65N Temperature & Humidity Sensor x 1
2291 * Optional external sensor
2292
2293 = 9. Reference material =
2294
2295
2296 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0]]
2297
2298 = 10. FCC Warning =
2299
2300
2301 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
2302
2303 (1) This device may not cause harmful interference;
2304
2305 (2) this device must accept any interference received, including interference that may cause undesired operation.