Version 256.2 by Xiaoling on 2023/07/17 15:03
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1 (% style="text-align:center" %)
2 [[image:image-20230717144215-1.png||height="438" width="292"]]
3
4
5
6
7 **Table of Contents:**
8
9 {{toc/}}
10
11
12
13
14
15 = 1. Introduction =
16
17 == 1.1 What is LHT65N Temperature & Humidity Sensor ==
18
19
20 (((
21 The Dragino LHT65N Temperature & Humidity sensor is a Long Range LoRaWAN Sensor. It includes a (% style="color:#4f81bd" %)**built-in Temperature & Humidity sensor**(%%) and has an external sensor connector to connect to an external (% style="color:#4f81bd" %)**Temperature Sensor.**
22 )))
23
24 (((
25 The LHT65N allows users to send data and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, building automation, and so on.
26 )))
27
28 (((
29 LHT65N has a built-in 2400mAh non-chargeable battery which can be used for up to 10 years*.
30 )))
31
32 (((
33 LHT65N is full compatible with LoRaWAN v1.0.3 Class A protocol, it can work with a standard LoRaWAN gateway.
34 )))
35
36 (((
37 LHT65N supports (% style="color:#4f81bd" %)**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.
38 )))
39
40 (((
41 *The actual battery life depends on how often to send data, please see the battery analyzer chapter.
42 )))
43
44
45 == 1.2 Features ==
46
47
48 * LoRaWAN v1.0.3 Class A protocol
49 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915
50 * AT Commands to change parameters
51 * Remote configure parameters via LoRaWAN Downlink
52 * Firmware upgradeable via program port
53 * Built-in 2400mAh battery for up to 10 years of use.
54 * Built-in Temperature & Humidity sensor
55 * Optional External Sensors
56 * Tri-color LED to indicate working status
57 * Datalog feature (Max 3328 records)
58
59
60 == 1.3 Specification ==
61
62
63 (% style="color:#037691" %)**Built-in Temperature Sensor:**
64
65 * Resolution: 0.01 °C
66 * Accuracy Tolerance : Typ ±0.3 °C
67 * Long Term Drift: < 0.02 °C/yr
68 * Operating Range: -40 ~~ 85 °C
69
70 (% style="color:#037691" %)**Built-in Humidity Sensor:**
71
72 * Resolution: 0.04 %RH
73 * Accuracy Tolerance : Typ ±3 %RH
74 * Long Term Drift: < 0.02 °C/yr
75 * Operating Range: 0 ~~ 96 %RH
76
77 (% style="color:#037691" %)**External Temperature Sensor:**
78
79 * Resolution: 0.0625 °C
80 * ±0.5°C accuracy from -10°C to +85°C
81 * ±2°C accuracy from -55°C to +125°C
82 * Operating Range: -55 °C ~~ 125 °C
83
84
85 = 2. Connect LHT65N to IoT Server =
86
87 == 2.1 How does LHT65N work? ==
88
89
90 (((
91 LHT65N is configured as LoRaWAN OTAA Class A mode by default. Each LHT65N is shipped with a worldwide unique set of OTAA keys. To use LHT65N in a LoRaWAN network, first, we need to put the OTAA keys in LoRaWAN Network Server and then activate LHT65N.
92 )))
93
94 (((
95 If LHT65N is under the coverage of this LoRaWAN network. LHT65N can join the LoRaWAN network automatically. After successfully joining, LHT65N will start to measure environment temperature and humidity, and start to transmit sensor data to the LoRaWAN server. The default period for each uplink is 20 minutes.
96 )))
97
98
99 == 2.2 How to Activate LHT65N? ==
100
101
102 (((
103 The LHT65N has two working modes:
104 )))
105
106 * (((
107 (% style="color:blue" %)**Deep Sleep Mode**(%%): LHT65N doesn't have any LoRaWAN activation. This mode is used for storage and shipping to save battery life.
108 )))
109 * (((
110 (% style="color:blue" %)**Working Mode**(%%):  In this mode, LHT65N works as LoRaWAN Sensor mode to Join LoRaWAN network and send out the sensor data to the server. Between each sampling/tx/rx periodically, LHT65N will be in STOP mode (IDLE mode), in STOP mode, LHT65N has the same power consumption as Deep Sleep mode. 
111 )))
112
113 (((
114 The LHT65N is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
115 )))
116
117
118 [[image:image-20230717144740-2.png||height="391" width="267"]]
119
120 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
121 |=(% style="width: 167px;background-color:#D9E2F3;color:#0070C0" %)**Behavior on ACT**|=(% style="width: 117px;background-color:#D9E2F3;color:#0070C0" %)**Function**|=(% style="width: 225px;background-color:#D9E2F3;color:#0070C0" %)**Action**
122 |(% 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" %)(((
123 If LHT65N is already Joined to rhe LoRaWAN network, LHT65N will send an uplink packet, if LHT65N has external sensor connected,(% style="color:blue" %)**Blue led** (%%)will blink once. If LHT65N has not external sensor, (% style="color:red" %)**Red led**(%%) will blink once.
124 )))
125 |(% 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" %)(((
126 (% style="background-color:#f2f2f2; color:green" %)**Green led**(%%) will fast blink 5 times, LHT65N will enter working mode and start to JOIN LoRaWAN network.
127 (% style="background-color:#f2f2f2; color:green" %)**Green led**(%%) will solidly turn on for 5 seconds after join in network.
128 )))
129 |(% style="background-color:#f2f2f2; width:167px" %)Fast press ACT 5 times.|(% style="background-color:#f2f2f2; width:117px" %)Deactivate Device|(% style="background-color:#f2f2f2; width:225px" %)(% style="color:red" %)**Red led**(%%) will solid on for 5 seconds. Means LHT65N is in Deep Sleep Mode.
130
131
132 == 2.3 Example to join LoRaWAN network ==
133
134
135 (% class="wikigeneratedid" %)
136 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.
137
138
139 (% class="wikigeneratedid" %)
140 [[image:image-20220522232442-1.png||_mstalt="427830" height="387" width="648"]]
141
142
143 (((
144 Assume the LPS8N is already set to connect to [[TTN V3 network>>url:https://eu1.cloud.thethings.network||_mstvisible="2"]], So it provides network coverage for LHT65N. Next we need to add the LHT65N device in TTN V3:
145 )))
146
147
148 === 2.3.1 Step 1: Create Device n TTN ===
149
150
151 (((
152 Create a device in TTN V3 with the OTAA keys from LHT65N.
153 )))
154
155 (((
156 Each LHT65N is shipped with a sticker with its device EUI, APP Key and APP EUI as below:
157 )))
158
159 [[image:image-20230426083319-1.png||height="258" width="556"]]
160
161 User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:
162
163 Add APP EUI in the application.
164
165
166 [[image:image-20220522232916-3.png||_mstalt="430495"]]
167
168
169 [[image:image-20220522232932-4.png||_mstalt="430157"]]
170
171
172 [[image:image-20220522232954-5.png||_mstalt="431847"]]
173
174
175
176 (% style="color:red" %)**Note: LHT65N use same payload as LHT65.**
177
178
179 [[image:image-20220522233026-6.png||_mstalt="429403"]]
180
181
182 Input APP EUI,  APP KEY and DEV EUI:
183
184
185 [[image:image-20220522233118-7.png||_mstalt="430430"]]
186
187
188 === 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
189
190
191 (((
192 Use ACT button to activate LHT65N and it will auto-join to the TTN V3 network. After join success, it will start to upload sensor data to TTN V3 and user can see in the panel.
193 )))
194
195 [[image:image-20220522233300-8.png||_mstalt="428389" height="219" width="722"]]
196
197
198 == 2.4 Uplink Payload (Fport~=2) ==
199
200
201 (((
202 The uplink payload includes totally 11 bytes. Uplink packets use FPORT=2 and (% style="color:#4f81bd" %)**every 20 minutes**(%%) send one uplink by default.
203 )))
204
205 (((
206 After each uplink, the (% style="color:blue" %)**BLUE LED**(%%) will blink once.
207 )))
208
209 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:390px" %)
210 |=(% style="width: 60px;background-color:#D9E2F3;color:#0070C0" %)(((
211 **Size(bytes)**
212 )))|=(% style="width: 30px;background-color:#D9E2F3;color:#0070C0" %)(((
213 **2**
214 )))|=(% style="width: 100px;background-color:#D9E2F3;color:#0070C0" %)(((
215 **2**
216 )))|=(% style="width: 100px;background-color:#D9E2F3;color:#0070C0" %)(((
217 **2**
218 )))|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((
219 **1**
220 )))|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((
221 **4**
222 )))
223 |(% style="width:97px" %)(((
224 **Value**
225 )))|(% style="width:39px" %)(((
226 [[BAT>>||anchor="H2.4.2BAT-BatteryInfo"]]
227 )))|(% style="width:100px" %)(((
228 (((
229 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
230 )))
231 )))|(% style="width:77px" %)(((
232 (((
233 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
234 )))
235 )))|(% style="width:47px" %)(((
236 [[Ext>>||anchor="H2.4.5Ext23"]] #
237 )))|(% style="width:51px" %)(((
238 [[Ext value>>||anchor="H2.4.6Extvalue"]]
239 )))
240
241 * The First 6 bytes: has fix meanings for every LHT65N.
242
243 * The 7th byte (EXT #): defines the external sensor model.
244
245 * 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.)
246
247
248 === 2.4.1 Decoder in TTN V3 ===
249
250
251 When the uplink payload arrives TTNv3, it shows HEX format and not friendly to read. We can add LHT65N decoder in TTNv3 for friendly reading.
252
253 Below is the position to put the decoder and LHT65N decoder can be download from here: [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
254
255
256 [[image:image-20220522234118-10.png||_mstalt="451464" height="353" width="729"]]
257
258
259 === 2.4.2 BAT-Battery Info ===
260
261
262 These two bytes of BAT include the battery state and the actually voltage.
263
264 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:477px" %)
265 |=(% style="width: 69px; background-color:#D9E2F3;color:#0070C0" %)(((
266 **Bit(bit)**
267 )))|=(% style="width: 253px;background-color:#D9E2F3;color:#0070C0" %)[15:14]|=(% style="width: 155px;background-color:#D9E2F3;color:#0070C0" %)[13:0]
268 |(% style="width:66px" %)(((
269 **Value**
270 )))|(% style="width:250px" %)(((
271 BAT Status
272 00(b): Ultra Low ( BAT <= 2.50v)
273 01(b): Low (2.50v <=BAT <= 2.55v)
274 10(b): OK (2.55v <= BAT <=2.65v)
275 11(b): Good (BAT >= 2.65v)
276 )))|(% style="width:152px" %)Actually BAT voltage
277
278 **(b)stands for binary**
279
280
281 [[image:image-20220522235639-1.png||_mstalt="431392" height="139" width="727"]]
282
283
284 Check the battery voltage for LHT65N.
285
286 * BAT status=(0Xcba4>>14)&0xFF=11 (BIN) ，very good
287
288 * Battery Voltage =0xCBA4&0x3FFF=0x0BA4=2980mV
289
290
291 === 2.4.3 Built-in Temperature ===
292
293
294 [[image:image-20220522235639-2.png||_mstalt="431756" height="138" width="722"]]
295
296 * Temperature:  0x0ABB/100=27.47℃
297
298 [[image:image-20220522235639-3.png||_mstalt="432120"]]
299
300 * Temperature:  (0xF5C6-65536)/100=-26.18℃
301
302
303 (% style="display:none" %)
304
305 === 2.4.4 Built-in Humidity ===
306
307
308 [[image:image-20220522235639-4.png||_mstalt="432484" height="138" width="722"]]
309
310 * Humidity:    0x025C/10=60.4%
311
312
313 (% style="display:none" %)
314
315 === 2.4.5 Ext # ===
316
317
318 Bytes for External Sensor:
319
320 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:425px" %)
321 |=(% style="width: 102px; background-color:#D9E2F3;color:#0070C0" %)**EXT # **Value|=(% style="width: 323px;background-color:#D9E2F3;color:#0070C0" %)External Sensor Type
322 |(% style="width:102px" %)0x01|(% style="width:319px" %)Sensor E3, Temperature Sensor
323 |(% style="width:102px" %)0x09|(% style="width:319px" %)Sensor E3, Temperature Sensor, Datalog Mod
324
325
326 === 2.4.6 Ext value ===
327
328 ==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
329
330
331 [[image:image-20220522235639-5.png||_mstalt="432848"]]
332
333
334 * DS18B20 temp=0x0ADD/100=27.81℃
335
336 The last 2 bytes of data are meaningless
337
338
339
340 [[image:image-20220522235639-6.png||_mstalt="433212"]]
341
342
343 * External temperature= (0xF54F-65536)/100=-27.37℃
344
345 F54F :  (F54F & 8000 == 1) , temp = (F54F - 65536)/100 = 27.37℃
346
347 （0105 & 8000：Judge whether the highest bit is 1, when the highest bit is 1, it is negative）
348
349 The last 2 bytes of data are meaningless
350
351 If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
352
353
354
355 ==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
356
357
358 (((
359 Timestamp mode is designed for LHT65N with E3 probe, it will send the uplink payload with Unix timestamp. With the limitation of 11 bytes (max distance of AU915/US915/AS923 band), the time stamp mode will be lack of BAT voltage field, instead, it shows the battery status. The payload is as below:
360 )))
361
362
363 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:480px" %)
364 |=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((
365 **Size(bytes)**
366 )))|=(% style="width: 70px;background-color:#D9E2F3;color:#0070C0" %)(((
367 **2**
368 )))|=(% style="width: 120px;background-color:#D9E2F3;color:#0070C0" %)(((
369 **2**
370 )))|=(% style="width: 120px;background-color:#D9E2F3;color:#0070C0" %)(((
371 **2**
372 )))|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((
373 **1**
374 )))|=(% style="width: 70px;background-color:#D9E2F3;color:#0070C0" %)(((
375 **4**
376 )))
377 |(% style="width:110px" %)(((
378 **Value**
379 )))|(% style="width:71px" %)(((
380 External temperature
381 )))|(% style="width:99px" %)(((
382 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
383 )))|(% style="width:132px" %)(((
384 BAT Status & [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
385 )))|(% style="width:54px" %)(((
386 Status & Ext
387 )))|(% style="width:64px" %)(((
388 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp"]]
389 )))
390
391 * **Battery status & Built-in Humidity**
392
393 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:461px" %)
394 |=(% style="width: 69px;background-color:#D9E2F3;color:#0070C0" %)Bit(bit)|=(% style="width: 258px;background-color:#D9E2F3;color:#0070C0" %)[15:14]|=(% style="width: 134px;background-color:#D9E2F3;color:#0070C0" %)[11:0]
395 |(% style="width:67px" %)**Value**|(% style="width:256px" %)(((
396 BAT Status
397 00(b): Ultra Low ( BAT <= 2.50v)
398 01(b): Low  (2.50v <=BAT <= 2.55v)
399 10(b): OK   (2.55v <= BAT <=2.65v)
400 11(b): Good   (BAT >= 2.65v)
401 )))|(% style="width:132px" %)(((
402 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
403 )))
404
405 * **Status & Ext Byte**
406
407 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:500px" %)
408 |(% style="background-color:#d9e2f3; color:#0070c0; width:60px" %)**Bits**|(% style="background-color:#d9e2f3; color:#0070c0; width:90px" %)**7**|(% style="background-color:#d9e2f3; color:#0070c0; width:100px" %)**6**|(% style="background-color:#d9e2f3; color:#0070c0; width:90px" %)**5**|(% style="background-color:#d9e2f3; color:#0070c0; width:100px" %)**4**|(% style="background-color:#d9e2f3; color:#0070c0; width:60px" %)**[3:0]**
409 |(% 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)
410
411 * (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
412 * (% style="color:blue" %)**Sync time OK**: (%%) 1: Set time ok，0: N/A. After time SYNC request is sent, LHT65N will set this bit to 0 until got the time stamp from the application server.
413 * (% style="color:blue" %)**Unix Time Request**:(%%)  1: Request server downlink Unix time, 0 : N/A. In this mode, LHT65N will set this bit to 1 every 10 days to request a time SYNC. (AT+SYNCMOD to set this)
414
415
416 ==== 2.4.6.3 Ext~=6, ADC Sensor(use with E2 Cable) ====
417
418
419 In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
420
421 be used to power the external ADC sensor; user can control the power on time for this
422
423 (% style="color:blue" %)**sensor by setting:**
424
425 **AT+EXT=6,timeout**  (% style="color:red" %)**Time to power this sensor, from 0 ~~ 65535ms**
426
427 **For example:**
428
429 AT+EXT=6,1000 will power this sensor for 1000ms before sampling the ADC value.
430
431
432 Or use **downlink command A2** to set the same.
433
434 The measuring range of the node is only about 0.1V to 1.1V The voltage resolution is about 0.24mv.
435
436 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.
437
438 [[image:image-20220628150112-1.png||_mstalt="427414" height="241" width="285"]]
439
440
441 When ADC_IN1 pin is connected to GND or suspended, ADC value is 0
442
443 [[image:image-20220628150714-4.png||_mstalt="431054"]]
444
445
446 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.
447
448
449 1) The minimum range is about 0.1V. Each chip has internal calibration, so this value is close to 0.1V
450
451 [[image:image-20220628151005-5.png||_mstalt="429546"]]
452
453
454 2) The maximum range is about 1.1V. Each chip has internal calibration, so this value is close to 1.1v
455
456 [[image:image-20220628151056-6.png||_mstalt="431873"]]
457
458
459 3) Within range
460
461 [[image:image-20220628151143-7.png||_mstalt="431210"]]
462
463
464
465 ==== 2.4.6.4 Ext~=2 TMP117 Sensor((% style="display:none" %) (%%)Since Firmware v1.3)(% style="display:none" %) (%%) ====
466
467 [[image:image-20230717145430-4.png||height="487" width="472"]]
468
469 (% style="display:none" %) (%%)
470
471
472
473 (% style="color:blue" %)**Ext=2,Temperature Sensor(TMP117)：**
474
475 [[image:image-20220906102307-7.png||_mstalt="430443"]]
476
477
478 (% style="color:blue" %)**Interrupt Mode and Counting Mode:**
479
480 The external cable NE2 can be use for MOD4 and MOD8
481
482
483
484 ==== 2.4.6.5 Ext~=11 SHT31 Sensor ((% style="display:none" %) (%%)Since Firmware v1.4.1) ====
485
486
487 [[image:65N-E31F.jpg||height="454" width="459"]]
488
489
490 (% style="color:blue" %)**Ext=11,Temperature & Humidity Sensor(SHT31)：**
491
492 [[image:SHT31.png]]
493
494
495
496 ==== 2.4.6.6 Ext~=4 Interrupt Mode(Since Firmware v1.3) ====
497
498
499 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will send an uplink when there is a trigger.**
500
501
502 (% style="color:blue" %)**Interrupt Mode can be used to connect to external interrupt sensors such as:**
503
504 (% style="color:#037691" %)**Case 1: Door Sensor.** (%%)3.3v Out for such sensor is just to detect Open/Close.
505
506 In Open State, the power consumption is the same as if there is no probe
507
508 In Close state, the power consumption will be 3uA higher than normal.
509
510 [[image:image-20220906100852-1.png||_mstalt="429156" height="205" width="377"]]
511
512
513 Ext=4,Interrupt Sensor：
514
515 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:504px" %)
516 |(% style="width:101px" %)(((
517 **AT+EXT=4,1**
518 )))|(% style="width:395px" %)(((
519 **Sent uplink packet in both rising and falling interrupt**
520 )))
521 |(% style="width:101px" %)(((
522 **AT+EXT=4,2**
523 )))|(% style="width:395px" %)(((
524 **Sent uplink packet only in falling interrupt**
525 )))
526 |(% style="width:101px" %)(((
527 **AT+EXT=4,3**
528 )))|(% style="width:395px" %)(((
529 **Sent uplink packet only in rising interrupt**
530 )))
531
532 Trigger by falling edge:
533
534 [[image:image-20220906101145-2.png||_mstalt="428324"]]
535
536
537 Trigger by raising edge：
538
539 [[image:image-20220906101145-3.png||_mstalt="428688"]]
540
541
542
543 ==== 2.4.6.7 Ext~=8 Counting Mode(Since Firmware v1.3) ====
544
545
546 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will count for every interrupt and uplink periodically.**
547
548
549 (% 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.
550
551 [[image:image-20220906101320-4.png||_mstalt="427336" height="366" width="698"]]
552
553
554 (% 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
555
556 [[image:image-20220906101320-5.png||_mstalt="427700" height="353" width="696"]]
557
558
559 Ext=8, Counting Sensor ( 4 bytes)：
560
561 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:330px" %)
562 |(% style="width:131px" %)(((
563 **AT+EXT=8,0**
564 )))|(% style="width:195px" %)(((
565 **Count at falling interrupt**
566 )))
567 |(% style="width:131px" %)(((
568 **AT+EXT=8,1**
569 )))|(% style="width:195px" %)(((
570 **Count at rising interrupt**
571 )))
572 |(% style="width:131px" %)(((
573 **AT+SETCNT=60**
574 )))|(% style="width:195px" %)(((
575 **Sent current count to 60**
576 )))
577
578 [[image:image-20220906101320-6.png||_mstalt="428064"]]
579
580
581 (% style="color:blue" %)**A2 downlink Command：**
582
583 A2 02:  Same as AT+EXT=2 (AT+EXT= second byte)
584
585 A2 06 01 F4:  Same as AT+EXT=6,500 (AT+EXT= second byte, third and fourth bytes)
586
587 A2 04 02:  Same as AT+EXT=4,2 (AT+EXT= second byte, third byte)
588
589 A2 08 01 00:  Same as AT+EXT=8,0 (AT+EXT= second byte, fourth byte)
590
591 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)
592
593
594 ==== 2.4.6.8 Ext~=10, E2 sensor (TMP117)with Unix Timestamp(Since firmware V1.3.2) ====
595
596
597 (((
598 Timestamp mode is designed for LHT65N with E2 probe, it will send the uplink payload with Unix timestamp. With the limitation of 11 bytes (max distance of AU915/US915/AS923 band), the time stamp mode will be lack of BAT voltage field, instead, it shows the battery status. The payload is as below:
599 )))
600
601
602 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:480px" %)
603 |=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((
604 **Size(bytes)**
605 )))|=(% style="width: 70px;background-color:#D9E2F3;color:#0070C0" %)(((
606 **2**
607 )))|=(% style="width: 120px;background-color:#D9E2F3;color:#0070C0" %)(((
608 **2**
609 )))|=(% style="width: 120px;background-color:#D9E2F3;color:#0070C0" %)(((
610 **2**
611 )))|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((
612 **1**
613 )))|=(% style="width: 70px;background-color:#D9E2F3;color:#0070C0" %)(((
614 **4**
615 )))
616 |(% style="width:110px" %)(((
617 **Value**
618 )))|(% style="width:71px" %)(((
619 External temperature
620 )))|(% style="width:99px" %)(((
621 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
622 )))|(% style="width:132px" %)(((
623 BAT Status & [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
624 )))|(% style="width:54px" %)(((
625 Status & Ext
626 )))|(% style="width:64px" %)(((
627 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp"]]
628 )))
629
630 * **Battery status & Built-in Humidity**
631
632 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:461px" %)
633 |=(% style="width: 69px;background-color:#D9E2F3;color:#0070C0" %)Bit(bit)|=(% style="width: 258px;background-color:#D9E2F3;color:#0070C0" %)[15:14]|=(% style="width: 134px;background-color:#D9E2F3;color:#0070C0" %)[11:0]
634 |(% style="width:67px" %)**Value**|(% style="width:256px" %)(((
635 BAT Status
636 00(b): Ultra Low ( BAT <= 2.50v)
637 01(b): Low  (2.50v <=BAT <= 2.55v)
638 10(b): OK   (2.55v <= BAT <=2.65v)
639 11(b): Good   (BAT >= 2.65v)
640 )))|(% style="width:132px" %)(((
641 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
642 )))
643
644 * **Status & Ext Byte**
645
646 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:500px" %)
647 |(% style="background-color:#d9e2f3; color:#0070c0; width:60px" %)**Bits**|(% style="background-color:#d9e2f3; color:#0070c0; width:90px" %)**7**|(% style="background-color:#d9e2f3; color:#0070c0; width:100px" %)**6**|(% style="background-color:#d9e2f3; color:#0070c0; width:90px" %)**5**|(% style="background-color:#d9e2f3; color:#0070c0; width:100px" %)**4**|(% style="background-color:#d9e2f3; color:#0070c0; width:60px" %)**[3:0]**
648 |(% 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)
649
650 * (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
651 * (% style="color:blue" %)**Sync time OK**: (%%) 1: Set time ok, 0: N/A. After time SYNC request is sent, LHT65N will set this bit to 0 until got the time stamp from the application server.
652 * (% style="color:blue" %)**Unix Time Request**:(%%)  1: Request server downlink Unix time, 0 : N/A. In this mode, LHT65N will set this bit to 1 every 10 days to request a time SYNC. (AT+SYNCMOD to set this)
653
654
655 == 2.5 Show data on Datacake ==
656
657
658 (((
659 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:
660 )))
661
662
663 (((
664 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the LoRaWAN network.
665 )))
666
667 (((
668 (% 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.
669 )))
670
671
672 (((
673 Add Datacake:
674 )))
675
676
677 [[image:image-20220523000825-7.png||_mstalt="429884" height="262" width="583"]]
678
679
680
681 Select default key as Access Key:
682
683
684 [[image:image-20220523000825-8.png||_mstalt="430248" height="453" width="406"]]
685
686
687 In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/]]) , add LHT65 device.
688
689
690 [[image:image-20220523000825-9.png||_mstalt="430612" height="366" width="392"]]
691
692
693 [[image:image-20220523000825-10.png||_mstalt="450619" height="413" width="728"]]
694
695
696 == 2.6 Datalog Feature ==
697
698
699 (((
700 Datalog Feature is to ensure IoT Server can get all sampling data from Sensor even if the LoRaWAN network is down. For each sampling, LHT65N will store the reading for future retrieving purposes. There are two ways for IoT servers to get datalog from LHT65N.
701 )))
702
703
704 === 2.6.1 Ways to get datalog via LoRaWAN ===
705
706
707 There are two methods:
708
709 (% style="color:blue" %)**Method 1:** (%%)IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specified time range.
710
711
712 (% style="color:blue" %)**Method 2: **(%%)Set [[PNACKMD=1>>||anchor="H4.13AutoSendNone-ACKmessages"]], LHT65N will wait for ACK for every uplink, when there is no LoRaWAN network, LHT65N will mark these records with non-ack messages and store the sensor data, and it will send all messages (10s interval) after the network recovery.
713
714
715 (% style="color:red" %)**Note for method 2:**
716
717 * a) LHT65N will do an ACK check for data records sending to make sure every data arrive server.
718 * b) LHT65N will send data in **CONFIRMED Mode** when PNACKMD=1, but LHT65N won't re-transmit the packet if it doesn't get ACK, it will just mark it as a NONE-ACK message. In a future uplink if LHT65N gets a ACK, LHT65N will consider there is a network connection and resend all NONE-ACK Message.
719
720 Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
721
722
723 [[image:image-20220703111700-2.png||_mstalt="426244" height="381" width="1119"]]
724
725
726 === 2.6.2 Unix TimeStamp ===
727
728
729 LHT65N uses Unix TimeStamp format based on
730
731
732 [[image:image-20220523001219-11.png||_mstalt="450450" height="97" width="627"]]
733
734
735
736 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :
737
738 Below is the converter example
739
740 [[image:image-20220523001219-12.png||_mstalt="450827" height="298" width="720"]]
741
742
743 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
744
745
746 === 2.6.3 Set Device Time ===
747
748
749 (((
750 (% style="color:blue" %)**There are two ways to set device's time:**
751 )))
752
753 (((
754 **1.  Through LoRaWAN MAC Command (Default settings)**
755 )))
756
757 (((
758 User need to set SYNCMOD=1 to enable sync time via MAC command.
759 )))
760
761 (((
762 Once LHT65N Joined LoRaWAN network, it will send the MAC command (DeviceTimeReq) and the server will reply with (DeviceTimeAns) to send the current time to LHT65N. If LHT65N fails to get the time from the server, LHT65N will use the internal time and wait for next time request (AT+SYNCTDC to set the time request period, default is 10 days).
763 )))
764
765 (((
766 (% 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.**
767 )))
768
769
770 (((
771 **2. Manually Set Time**
772 )))
773
774 (((
775 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
776 )))
777
778
779 === 2.6.4 Poll sensor value ===
780
781
782 User can poll sensor value based on timestamps from the server. Below is the downlink command.
783
784 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:428px" %)
785 |(% style="background-color:#d9e2f3; color:#0070c0; width:58px" %)**1byte**|(% style="background-color:#d9e2f3; color:#0070c0; width:128px" %)**4bytes**|(% style="background-color:#d9e2f3; color:#0070c0; width:123px" %)**4bytes**|(% style="background-color:#d9e2f3; color:#0070c0; width:116px" %)**1byte**
786 |(% style="width:58px" %)31|(% style="width:128px" %)Timestamp start|(% style="width:123px" %)Timestamp end|(% style="width:116px" %)Uplink Interval
787
788 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.
789
790 For example, downlink command (% _mstmutation="1" %)**31 5FC5F350 5FC6 0160 05**(%%)
791
792 Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00's data
793
794 Uplink Internal =5s, means LHT65N will send one packet every 5s. range 5~~255s.
795
796
797 === 2.6.5 Datalog Uplink payload ===
798
799
800 The Datalog poll reply uplink will use below payload format.
801
802 **Retrieval data payload:**
803
804 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:480px" %)
805 |=(% style="width: 60px;background-color:#D9E2F3;color:#0070C0" %)(((
806 **Size(bytes)**
807 )))|=(% style="width: 90px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="width: 90px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="width: 70px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="width: 100px;background-color:#D9E2F3;color:#0070C0" %)**1**|=(% style="width: 70px;background-color:#D9E2F3;color:#0070C0" %)**4**
808 |(% 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"]]
809
810 **Poll message flag & Ext:**
811
812 [[image:image-20221006192726-1.png||_mstalt="430508" height="112" width="754"]]
813
814 (% 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)
815
816 (% style="color:blue" %)**Poll Message Flag**(%%): 1: This message is a poll message reply.
817
818 * Poll Message Flag is set to 1.
819
820 * Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
821
822 For example, in US915 band, the max payload for different DR is:
823
824 (% style="color:blue" %)**a) DR0:** (%%)max is 11 bytes so one entry of data
825
826 (% style="color:blue" %)**b) DR1:**(%%) max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
827
828 (% style="color:blue" %)**c) DR2:**(%%) total payload includes 11 entries of data
829
830 (% style="color:blue" %)**d) DR3: **(%%)total payload includes 22 entries of data.
831
832 If devise doesn't have any data in the polling time. Device will uplink 11 bytes of 0   
833
834
835 **Example:**
836
837 If LHT65N has below data inside Flash:
838
839 [[image:image-20230426171833-4.png]]
840
841
842 If user sends below downlink command: (% style="background-color:yellow" %)3160065F9760066DA705
843
844 Where : Start time: 60065F97 = time 21/1/19 04:27:03
845
846 Stop time: 60066DA7= time 21/1/19 05:27:03
847
848
849 **LHT65N will uplink this payload.**
850
851 [[image:image-20220523001219-13.png||_mstalt="451204" height="421" style="text-align:left" width="727"]]
852
853
854 __**7FFF089801464160065F97**__ **__7FFF__ __088E__ __014B__ __41__ __60066009__** 7FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
855
856 Where the first 11 bytes is for the first entry:
857
858 7FFF089801464160065F97
859
860 Ext sensor data=0x7FFF/100=327.67
861
862 Temp=0x088E/100=22.00
863
864 Hum=0x014B/10=32.6
865
866 poll message flag & Ext=0x41,means reply data,Ext=1
867
868 Unix time is 0x60066009=1611030423s=21/1/19 04:27:03
869
870
871 == 2.7 Alarm Mode & Feature "Multi sampling, one uplink" ==
872
873
874 (((
875 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.
876 )))
877
878 (((
879 (% style="color:red" %)**Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.**
880
881
882 === 2.7.1 ALARM MODE ( Since v1.3.1 firmware) ===
883
884
885 **Internal GXHT30 temperature alarm(Acquisition time: fixed at one minute)**
886
887 (((
888 (% class="box infomessage" %)
889 (((
890 **AT+WMOD=3**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)
891
892 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
893
894 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
895
896 (% _mstmutation="1" %)**AT+ARTEMP=? **(%%):  Gets the alarm range of the internal temperature sensor(% style="display:none" %)
897
898 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
899
900 **AT+LEDALARM=1** :       Enable LED visual Alarm.
901 )))
902 )))
903
904 (% style="color:#4f81bd" %)**Downlink Command:**
905
906 AT+WMOD=1:  A501  , AT+WMOD=0 :  A600
907
908 AT+CITEMP=1 : A60001
909
910 AT+ARTEMP=1,60  :  A70001003C
911
912 AT+ARTEMP=-16,60 :  A7FFF0003C
913
914 AT+LEDALARM=1  :  3601
915
916
917 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
918
919 Total bytes: 8 bytes
920
921 **Example: **AA0100010001003C
922
923 WMOD=01
924
925 CITEMP=0001
926
927 TEMPlow=0001
928
929 TEMPhigh=003C
930
931
932 **DS18B20 and TMP117 Threshold Alarm**
933
934 **~ AT+WMOD=1,60,-10,20**
935
936 (% style="color:#4f81bd" %)**Downlink Command:**
937
938 **Example: **A5013CFC180014
939
940 MOD=01
941
942 CITEMP=3C(S)
943
944 TEMPlow=FC18
945
946 TEMPhigh=0014
947
948
949 **Fluctuation alarm for DS18B20 and TMP117(Acquisition time: minimum 1s)**
950
951 **AT+WMOD=2,60,5** 
952
953 (% style="color:#4f81bd" %)**Downlink Command:**
954
955 **Example: **A5023C05
956
957 MOD=02
958
959 CITEMP=3C(S)
960
961 temperature fluctuation=05
962
963
964 **Sampling multiple times and uplink together**
965
966 **AT+WMOD=3,1,60,20,-16,32,1**   
967
968 Explain:
969
970 * (% style="color:#037691" %)**parameter1: **(%%)Set Working Mode to **Mode 3**
971 * (% style="color:#037691" %)**parameter2:**(%%) Set the temperature sampling mode to** 1**(1:DS18B20;2:TMP117;3:** **Internal GXHT30).
972 * (% style="color:#037691" %)**parameter3: **(%%)Sampling Interval is **60**s.
973 * (% 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)
974 * (% style="color:#037691" %)**parameter5 & parameter6: **(%%)Temperature alarm range is **-16** to **32**°C,
975 * (% 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.
976
977 (% style="color:#4f81bd" %)**Downlink Command:**
978
979 **Example: **A50301003C14FFF0002001
980
981 MOD=03
982
983 TEMP=DS18B20
984
985 CITEMP=003C(S)
986
987 Total number of acquisitions=14
988
989 TEMPlow=FFF0
990
991 TEMPhigh=0020
992
993 ARTEMP=01
994
995
996 **Uplink payload( Fport=3)**
997
998 **Example: CBEA**01**0992**//0A41//**09C4**
999
1000 BatV=CBEA
1001
1002 TEMP=DS18B20
1003
1004 Temp1=0992  ~/~/ 24.50℃
1005
1006 Temp2=0A41  ~/~/ 26.25℃
1007
1008 Temp3=09C4  ~/~/ 25.00℃
1009
1010 (% style="color:red" %)**Note: This uplink will automatically select the appropriate DR according to the data length**
1011
1012 (% style="color:red" %)** In this mode, the temperature resolution of ds18b20 is 0.25℃ to save power consumption**
1013 )))
1014
1015
1016 === 2.7.2 ALARM MODE ( Before v1.3.1 firmware) ===
1017
1018
1019 (% class="box infomessage" %)
1020 (((
1021 (((
1022 **AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)
1023 )))
1024
1025 (((
1026 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
1027 )))
1028
1029 (((
1030 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
1031 )))
1032
1033 (((
1034 (% _mstmutation="1" %)**AT+ARTEMP=? **(%%):  Gets the alarm range of the internal temperature sensor(% style="display:none" %)
1035 )))
1036
1037 (((
1038 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
1039 )))
1040 )))
1041
1042 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
1043
1044 Total bytes: 8 bytes
1045
1046 **Example:**AA0100010001003C
1047
1048 WMOD=01
1049
1050 CITEMP=0001
1051
1052 TEMPlow=0001
1053
1054 TEMPhigh=003C
1055
1056
1057 == 2.8 LED Indicator ==
1058
1059
1060 The LHT65 has a triple color LED which for easy showing different stage .
1061
1062 While user press ACT button, the LED will work as per LED status with ACT button.
1063
1064 In a normal working state:
1065
1066 * For each uplink, the BLUE LED or RED LED will blink once.
1067 BLUE LED when external sensor is connected.
1068 * RED LED when external sensor is not connected
1069 * For each success downlink, the PURPLE LED will blink once
1070
1071
1072 == 2.9 installation ==
1073
1074
1075 [[image:image-20220516231650-1.png||_mstalt="428597" height="436" width="428"]]
1076
1077
1078 = 3. Sensors and Accessories =
1079
1080 == 3.1 E2 Extension Cable ==
1081
1082
1083 [[image:image-20220619092222-1.png||_mstalt="429533" height="182" width="188"]][[image:image-20220619092313-2.png||_mstalt="430222" height="182" width="173"]]
1084
1085
1086 **1m long breakout cable for LHT65N. Features:**
1087
1088 * (((
1089 Use for AT Command, works for both LHT52/LHT65N
1090 )))
1091 * (((
1092 Update firmware for LHT65N, works for both LHT52/LHT65N
1093 )))
1094 * (((
1095 Supports ADC mode to monitor external ADC
1096 )))
1097 * (((
1098 Supports Interrupt mode
1099 )))
1100 * (((
1101 Exposed All pins from the LHT65N Type-C connector.
1102
1103
1104
1105 )))
1106
1107 [[image:image-20220619092421-3.png||_mstalt="430547" height="371" width="529"]]
1108
1109
1110 == 3.2 E3 Temperature Probe ==
1111
1112
1113 [[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"]]
1114
1115
1116 Temperature sensor with 2 meters cable long
1117
1118 * Resolution: 0.0625 °C
1119 * ±0.5°C accuracy from -10°C to +85°C
1120 * ±2°C accuracy from -55°C to +125°C
1121 * Operating Range: -40 ~~ 125 °C
1122 * Working voltage 2.35v ~~ 5v
1123
1124
1125 == 3.3 E31F Temperature Probe ==
1126
1127
1128 [[image:65N-E31F-1.jpg||height="169" width="170"]] [[image:65N-E31F.jpg||height="196" width="198"]]
1129
1130
1131 Temperature sensor with 1 meters cable long
1132
1133 **Built-in Temperature Sensor:**
1134
1135 * Resolution: 0.01 °C
1136 * Accuracy Tolerance : Typ ±0.3 °C
1137 * Long Term Drift: < 0.02 °C/yr
1138 * Operating Range: -40 ~~ 80 °C
1139
1140 **Built-in Humidity Sensor:**
1141
1142 * Resolution: 0.04 % RH
1143 * Accuracy Tolerance : Typ ±3 % RH
1144 * Long Term Drift: < 0.02 °C/yr
1145 * Operating Range: 0 ~~ 96 % RH
1146
1147 **External Temperature Sensor :**
1148
1149 * Resolution: 0.01 °C
1150 * Accuracy Tolerance : Typical ±0.3 °C
1151 * Long Term Drift: < 0.02 °C/yr
1152 * Operating Range: -40 ~~ 125 °C
1153
1154 **External Humidity Sensor :**
1155
1156 * Resolution: 0.04 % RH
1157 * Accuracy Tolerance : Typ ±3 % RH
1158 * Long Term Drift: < 0.02 °C/yr
1159 * Operating Range: 0 ~~ 96 % RH
1160
1161
1162 = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1163
1164
1165 (((
1166 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
1167 )))
1168
1169 * (((
1170 AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
1171 )))
1172
1173 * (((
1174 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
1175 )))
1176
1177 (((
1178 There are two kinds of commands to configure LHT65N, they are:
1179 )))
1180
1181 * (((
1182 (% style="color:#4f81bd" %)**General Commands**.
1183 )))
1184
1185 (((
1186 These commands are to configure:
1187 )))
1188
1189 1. (((
1190 General system settings like: uplink interval.
1191 )))
1192 1. (((
1193 LoRaWAN protocol & radio-related commands.
1194 )))
1195
1196 (((
1197 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]]
1198 )))
1199
1200 * (((
1201 (% style="color:#4f81bd" %)**Commands special design for LHT65N**
1202 )))
1203
1204 (((
1205 These commands are only valid for LHT65N, as below:
1206 )))
1207
1208
1209 == 4.1 Set Transmit Interval Time ==
1210
1211
1212 Feature: Change LoRaWAN End Node Transmit Interval.
1213
1214
1215 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
1216
1217 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:501px" %)
1218 |(% style="background-color:#d9e2f3; color:#0070c0; width:155px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:166px" %)**Function**|(% style="background-color:#d9e2f3; color:#0070c0; width:180px" %)**Response**
1219 |(% style="width:155px" %)AT+TDC=?|(% style="width:162px" %)Show current transmit Interval|(% style="width:177px" %)30000 OK the interval is 30000ms = 30s
1220 |(% style="width:155px" %)AT+TDC=60000|(% style="width:162px" %)Set Transmit Interval|(% style="width:177px" %)OK Set transmit interval to 60000ms = 60 seconds
1221
1222 (% style="color:#4f81bd" %)**Downlink Command: 0x01**
1223
1224 Format: Command Code (0x01) followed by 3 bytes time value.
1225
1226 If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.
1227
1228 * **Example 1**: Downlink Payload: 0100001E  ~/~/ Set Transmit Interval (TDC) = 30 seconds
1229
1230 * **Example 2**: Downlink Payload: 0100003C  ~/~/ Set Transmit Interval (TDC) = 60 seconds
1231
1232
1233 == 4.2 Set External Sensor Mode ==
1234
1235
1236 Feature: Change External Sensor Mode.
1237
1238
1239 (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1240
1241
1242 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:468px" %)
1243 |(% style="background-color:#d9e2f3; color:#0070c0; width:155px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:153px" %)**Function**|(% style="background-color:#d9e2f3; color:#0070c0; width:160px" %)**Response**
1244 |(% style="width:155px" %)AT+EXT=?|(% style="width:151px" %)Get current external sensor mode|(% style="width:158px" %)1 OK External Sensor mode =1
1245 |(% style="width:155px" %)AT+EXT=1|(% colspan="2" rowspan="1" style="width:309px" %)Set external sensor mode to 1
1246 |(% style="width:155px" %)AT+EXT=9|(% colspan="2" rowspan="1" style="width:309px" %)Set to external DS18B20 with timestamp
1247
1248 (% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1249
1250 Total bytes: 2 ~~ 5 bytes
1251
1252 **Example:**
1253
1254 * 0xA201: Set external sensor type to E1
1255
1256 * 0xA209: Same as AT+EXT=9
1257
1258 * 0xA20702003c: Same as AT+SETCNT=60
1259
1260
1261 == 4.3 Enable/Disable uplink Temperature probe ID ==
1262
1263
1264 (((
1265 Feature: If PID is enabled, device will send the temperature probe ID on:
1266 )))
1267
1268 * (((
1269 First Packet after OTAA Join
1270 )))
1271 * (((
1272 Every 24 hours since the first packet.
1273 )))
1274
1275 (((
1276 PID is default set to disable (0)
1277
1278
1279 )))
1280
1281 (% style="color:#4f81bd" %)**AT Command:**
1282
1283 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:381px" %)
1284 |(% style="background-color:#d9e2f3; color:#0070c0; width:155px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:138px" %)**Function**|(% style="background-color:#d9e2f3; color:#0070c0; width:88px" %)**Response**
1285 |(% style="width:155px" %)AT+PID=1|(% style="width:136px" %)Enable PID uplink|(% style="width:86px" %)OK
1286
1287 (% style="color:#4f81bd" %)**Downlink Command:**
1288
1289 * **0xA800**  **~-~->** AT+PID=0
1290 * **0xA801**     **~-~->** AT+PID=1
1291
1292
1293 == 4.4 Set Password ==
1294
1295
1296 Feature: Set device password, max 9 digits
1297
1298 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1299
1300 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:372px" %)
1301 |(% style="background-color:#d9e2f3; color:#0070c0; width:155px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:128px" %)**Function**|(% style="background-color:#d9e2f3; color:#0070c0; width:89px" %)**Response**
1302 |(% style="width:155px" %)AT+PWORD=?|(% style="width:124px" %)Show password|(% style="width:86px" %)(((
1303 123456
1304
1305 OK
1306 )))
1307 |(% style="width:155px" %)AT+PWORD=999999|(% style="width:124px" %)Set password|(% style="width:86px" %)OK
1308
1309 (% style="color:#4f81bd" %)**Downlink Command:**
1310
1311 No downlink command for this feature.
1312
1313
1314 == 4.5 Quit AT Command ==
1315
1316
1317 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1318
1319 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1320
1321 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:433px" %)
1322 |(% style="background-color:#d9e2f3; color:#0070c0; width:155px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:191px" %)**Function**|(% style="background-color:#d9e2f3; color:#0070c0; width:86px" %)**Response**
1323 |(% style="width:155px" %)AT+DISAT|(% style="width:191px" %)Quit AT Commands mode|(% style="width:86px" %)OK
1324
1325 (% style="color:#4f81bd" %)**Downlink Command:**
1326
1327 No downlink command for this feature.
1328
1329
1330 == 4.6 Set to sleep mode ==
1331
1332
1333 Feature: Set device to sleep mode
1334
1335 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1336 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1337
1338 (% style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1339
1340 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:513px" %)
1341 |(% style="background-color:#d9e2f3; color:#0070c0; width:155px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:140px" %)**Function**|(% style="background-color:#d9e2f3; color:#0070c0; width:218px" %)**Response**
1342 |(% style="width:155px" %)AT+SLEEP|(% style="width:139px" %)Set to sleep mode|(% style="width:213px" %)(((
1343 Clear all stored sensor data…
1344
1345 OK
1346 )))
1347
1348 (% style="color:#4f81bd" %)**Downlink Command:**
1349
1350 * There is no downlink command to set to Sleep mode.
1351
1352
1353 == 4.7 Set system time ==
1354
1355
1356 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1357
1358 (% style="color:#4f81bd" %)**AT Command:**
1359
1360 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:506px" %)
1361 |(% style="background-color:#d9e2f3; color:#0070c0; width:188px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:318px" %)**Function**
1362 |(% style="width:154px" %)AT+TIMESTAMP=1611104352|(% style="width:285px" %)(((
1363 OK
1364
1365 Set System time to 2021-01-20 00:59:12
1366 )))
1367
1368 (% style="color:#4f81bd" %)**Downlink Command:**
1369
1370 0x306007806000  ~/~/  Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1371
1372
1373 == 4.8 Set Time Sync Mode ==
1374
1375
1376 (((
1377 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1378 )))
1379
1380 (((
1381 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.
1382 )))
1383
1384 (% style="color:#4f81bd" %)**AT Command:**
1385
1386 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:475px" %)
1387 |(% style="background-color:#d9e2f3; color:#0070c0; width:156px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:315px" %)**Function**
1388 |(% style="width:156px" %)AT+SYNCMOD=1|(% style="width:315px" %)Enable Sync system time via LoRaWAN MAC Command (DeviceTimeReq)
1389
1390 (% style="color:#4f81bd" %)**Downlink Command:**
1391
1392 0x28 01  ~/~/  Same As AT+SYNCMOD=1
1393 0x28 00  ~/~/  Same As AT+SYNCMOD=0
1394
1395
1396 == 4.9 Set Time Sync Interval ==
1397
1398
1399 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1400
1401 (% style="color:#4f81bd" %)**AT Command:**
1402
1403 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:472px" %)
1404 |(% style="background-color:#d9e2f3; color:#0070c0; width:158px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:314px" %)**Function**
1405 |(% style="width:156px" %)AT+SYNCTDC=0x0A |(% style="width:311px" %)Set SYNCTDC to 10 (0x0A), so the sync time is 10 days.
1406
1407 (% style="color:#4f81bd" %)**Downlink Command:**
1408
1409 **0x29 0A**  ~/~/ Same as AT+SYNCTDC=0x0A
1410
1411
1412 == 4.10 Print data entries base on page. ==
1413
1414
1415 Feature: Print the sector data from start page to stop page (max is 416 pages).
1416
1417 (% style="color:#4f81bd" %)**AT Command: AT+PDTA**
1418
1419 [[image:image-20230426164330-2.png]]
1420
1421 (% style="color:#4f81bd" %)**Downlink Command:**
1422
1423 No downlink commands for feature
1424
1425
1426 == 4.11 Print last few data entries. ==
1427
1428
1429 Feature: Print the last few data entries
1430
1431 (% style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1432
1433 [[image:image-20230426164932-3.png]]
1434
1435 (% style="color:#4f81bd" %)**Downlink Command:**
1436
1437 No downlink commands for feature
1438
1439
1440 == 4.12 Clear Flash Record ==
1441
1442
1443 Feature: Clear flash storage for data log feature.
1444
1445
1446 (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1447
1448
1449 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:503px" %)
1450 |(% style="background-color:#d9e2f3; color:#0070c0; width:157px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:137px" %)**Function**|(% style="background-color:#d9e2f3; color:#0070c0; width:209px" %)**Response**
1451 |(% style="width:155px" %)AT+CLRDTA |(% style="width:134px" %)Clear date record|(% style="width:209px" %)(((
1452 Clear all stored sensor data…
1453
1454 OK
1455 )))
1456
1457 (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1458
1459 * Example: 0xA301  ~/~/  Same as AT+CLRDTA
1460
1461
1462 == 4.13 Auto Send None-ACK messages ==
1463
1464
1465 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.
1466
1467 (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1468
1469 The default factory setting is 0
1470
1471 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:367px" %)
1472 |=(% style="width: 158px;background-color:#D9E2F3;color:#0070C0" %)**Command Example**|=(% style="width: 120px;background-color:#D9E2F3;color:#0070C0" %)**Function**|=(% style="width: 87px;background-color:#D9E2F3;color:#0070C0" %)**Response**
1473 |(% style="width:158px" %)AT+PNACKMD=1|(% style="width:118px" %)Poll None-ACK message|(% style="width:87px" %)OK
1474
1475 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1476
1477 * Example: 0x3401  ~/~/  Same as AT+PNACKMD=1
1478
1479
1480 == 4.14 Modified WMOD command for external sensor TMP117 or DS18B20 temperature alarm(Since firmware 1.3.0) ==
1481
1482
1483 Feature: Set internal and external temperature sensor alarms.
1484
1485 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:500px" %)
1486 |=(% style="width: 250px;background-color:#D9E2F3;color:#0070C0" %)**Command Example**|=(% style="width: 200px;background-color:#D9E2F3;color:#0070C0" %)**Function**|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)**Response**
1487 |(% style="width:268px" %)AT+WMOD=parameter1,parameter2,parameter3,parameter4|(% style="width:255px" %)Set internal and external temperature sensor alarms|(% style="width:181px" %)OK
1488
1489 (% style="color:#037691" %)**AT+WMOD=parameter1,parameter2,parameter3,parameter4**
1490
1491 (% style="color:#037691" %)**Parameter 1**(%%):  Alarm mode:
1492
1493 0): Cancel
1494
1495 1): Threshold alarm
1496
1497 2): Fluctuation alarm
1498
1499
1500 (% style="color:#037691" %)** Parameter 2**(%%):  Sampling time. Unit: seconds, up to 255 seconds.
1501
1502 (% 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.**
1503
1504
1505 (% style="color:#037691" %) **Parameter 3 and parameter 4:**
1506
1507 1):  If Alarm Mode is set to 1: Parameter 3 and parameter 4 are valid, as before, they represent low temperature and high temperature.
1508
1509 Such as AT+WMOD=1,60,45,105, it means high and low temperature alarm.
1510
1511
1512 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.
1513
1514 Such as AT+WMOD=2,10,2,it means that it is a fluctuation alarm.
1515
1516 If the difference between the current collected temperature and the last Uplin is ±2 degrees, the alarm will be issued.
1517
1518
1519 (% style="color:#4f81bd" %)**Downlink Command: 0xA5**
1520
1521 0xA5 00 ~-~- AT+WMOD=0.
1522
1523 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 )
1524
1525 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))
1526
1527 0xA5 02 0A 02 ~-~- AT+WMOD=2,10,2  (AT+WMOD = second byte, third byte, fourth byte)
1528
1529 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.
1530
1531
1532 = 5. Battery & How to replace =
1533
1534 == 5.1 Battery Type ==
1535
1536
1537 (((
1538 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.
1539 )))
1540
1541 (((
1542 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1543
1544
1545 [[image:image-20220515075034-1.png||_mstalt="428961" height="208" width="644"]]
1546 )))
1547
1548 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1549
1550
1551 == 5.2 Replace Battery ==
1552
1553
1554 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.
1555
1556 [[image:image-20220515075440-2.png||_mstalt="429546" height="338" width="272"]][[image:image-20220515075625-3.png||_mstalt="431574" height="193" width="257"]]
1557
1558
1559 == 5.3 Battery Life Analyze ==
1560
1561
1562 (((
1563 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:
1564 [[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]]
1565 )))
1566
1567
1568 (((
1569 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]]
1570 )))
1571
1572
1573 = 6. FAQ =
1574
1575 == 6.1 How to use AT Command? ==
1576
1577
1578 LHT65N supports AT Command set.User can use a USB to TTL adapter plus the Program Cable to connect to LHT65 for using AT command, as below.
1579
1580 [[image:image-20220530085651-1.png||_mstalt="429949"]]
1581
1582
1583 **Connection:**
1584
1585 * (% style="background-color:yellow" %)**USB to TTL GND <~-~->GND**
1586 * (% style="background-color:yellow" %)**USB to TTL RXD <~-~-> D+**
1587 * (% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1588
1589 (((
1590 (% _mstmutation="1" style="color:red" %)**(Note: This pin only corresponds to the lead-out board sold by dragino company. For the lead-out board purchased by yourself, please refer to the pin description in Chapter 6.6)**
1591
1592 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.
1593 )))
1594
1595
1596 Input password and ATZ to activate LHT65N,As shown below:
1597
1598 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1599
1600
1601 AT Command List is as below:
1602
1603 AT+<CMD>? :  Help on <CMD>
1604
1605 AT+<CMD> :  Run <CMD>
1606
1607 AT+<CMD>=<value> :  Set the value
1608
1609 AT+<CMD>=? :  Get the value
1610
1611 AT+DEBUG:  Set more info output
1612
1613 ATZ:  Trig a reset of the MCU
1614
1615 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1616
1617 AT+DEUI:  Get or Set the Device EUI
1618
1619 AT+DADDR:  Get or Set the Device Address
1620
1621 AT+APPKEY:  Get or Set the Application Key
1622
1623 AT+NWKSKEY:  Get or Set the Network Session Key
1624
1625 AT+APPSKEY:  Get or Set the Application Session Key
1626
1627 AT+APPEUI:  Get or Set the Application EUI
1628
1629 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1630
1631 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1632
1633 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1634
1635 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1636
1637 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1638
1639 AT+RX2FQ:  Get or Set the Rx2 window frequency
1640
1641 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1642
1643 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1644
1645 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1646
1647 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1648
1649 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1650
1651 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1652
1653 AT+NWKID:  Get or Set the Network ID
1654
1655 AT+FCU:  Get or Set the Frame Counter Uplink
1656
1657 AT+FCD:  Get or Set the Frame Counter Downlink
1658
1659 AT+CLASS:  Get or Set the Device Class
1660
1661 AT+JOIN:  Join network
1662
1663 AT+NJS:  Get the join status
1664
1665 AT+SENDB:  Send hexadecimal data along with the application port
1666
1667 AT+SEND:  Send text data along with the application port
1668
1669 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
1670
1671 AT+RECV:  Print last received data in raw format
1672
1673 AT+VER:  Get current image version and Frequency Band
1674
1675 AT+CFM:  Get or Set the confirmation mode (0-1)
1676
1677 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1678
1679 AT+SNR:  Get the SNR of the last received packet
1680
1681 AT+RSSI:  Get the RSSI of the last received packet
1682
1683 AT+TDC:  Get or set the application data transmission interval in ms
1684
1685 AT+PORT:  Get or set the application port
1686
1687 AT+DISAT:  Disable AT commands
1688
1689 AT+PWORD: Set password, max 9 digits
1690
1691 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
1692
1693 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
1694
1695 AT+PDTA:  Print the sector data from start page to stop page
1696
1697 AT+PLDTA:  Print the last few sets of data
1698
1699 AT+CLRDTA:  Clear the storage, record position back to 1st
1700
1701 AT+SLEEP:  Set sleep mode
1702
1703 AT+EXT:  Get or Set external sensor model
1704
1705 AT+BAT:  Get the current battery voltage in mV
1706
1707 AT+CFG:  Print all configurations
1708
1709 AT+WMOD:  Get or Set Work Mode
1710
1711 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
1712
1713 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
1714
1715 AT+SETCNT:  Set the count at present
1716
1717 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
1718
1719 AT+RPL:  Get or set response level
1720
1721 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
1722
1723 AT+LEAPSEC:  Get or Set Leap Second
1724
1725 AT+SYNCMOD:  Get or Set time synchronization method
1726
1727 AT+SYNCTDC:  Get or set time synchronization interval in day
1728
1729 AT+PID:  Get or set the PID
1730
1731
1732 == 6.2 Where to use AT commands and Downlink commands ==
1733
1734
1735 **AT commands: **
1736
1737 [[image:image-20220620153708-1.png||_mstalt="429806" height="603" width="723"]]
1738
1739
1740 **Downlink commands:**
1741
1742
1743 (% style="color:blue" %)**TTN:**
1744
1745 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
1746
1747
1748
1749 (% style="color:blue" %)**Helium: **
1750
1751 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
1752
1753
1754
1755 (% style="color:blue" %)**Chirpstack: The downlink window will not be displayed until the network is accessed**
1756
1757
1758 [[image:image-20220615094850-6.png||_mstalt="433082"]]
1759
1760
1761 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
1762
1763
1764
1765 (% style="color:blue" %)**Aws:**
1766
1767 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1768
1769
1770 == 6.3 How to change the uplink interval? ==
1771
1772
1773 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);"]]
1774
1775
1776 == 6.4 How to use TTL-USB to connect a PC to input AT commands? ==
1777
1778
1779 [[image:image-20220615153355-1.png||_mstalt="430222"]]
1780
1781 [[image:1655802313617-381.png||_mstalt="293917"]]
1782
1783
1784 (((
1785 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**(% style="color:red" %))(%%) 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.
1786 )))
1787
1788
1789 Input password and ATZ to activate LHT65N, As shown below:
1790
1791 [[image:image-20220615154519-3.png||_mstalt="431925" height="672" width="807"]]
1792
1793
1794 == 6.5 How to use TTL-USB to connect PC to upgrade firmware? ==
1795
1796
1797 [[image:image-20220615153355-1.png||_mstalt="430222"]]
1798
1799
1800 (% style="color:blue" %)**Step1**(%%): Install [[TremoProgrammer>>https://www.dropbox.com/sh/g99v0fxcltn9r1y/AAAnJD_qGZ42bB52o4UmH9v9a/LHT65N%20Temperature%20%26%20Humidity%20Sensor/tool?dl=0&subfolder_nav_tracking=1]]  first.
1801
1802 [[image:image-20220615170542-5.png||_mstalt="430638"]]
1803
1804
1805
1806 (% _mstmutation="1" style="color:blue" %)**Step2**(%%): wiring method.(% style="display:none" %)
1807
1808 First connect the four lines;(% style="display:none" %)
1809
1810 [[image:image-20220621170938-1.png||_mstalt="431340" height="413" width="419"]],(% style="display:none" %)
1811
1812
1813 Then use DuPont cable to short circuit port3 and port1, and then release them, so that the device enters bootlaod mode.
1814
1815 [[image:image-20220621170938-2.png||_mstalt="431704"]]
1816
1817
1818
1819 (% style="color:blue" %)**Step3: **(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1820
1821 [[image:image-20220615171334-6.png||_mstalt="431028"]]
1822
1823
1824 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1825
1826
1827 When this interface appears, it indicates that the download has been completed.
1828
1829 [[image:image-20220620160723-8.png||_mstalt="430703"]]
1830
1831
1832 Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
1833
1834
1835 == 6.6 Using USB-TYPE-C to connect to the computer using the AT command ==
1836
1837
1838 [[image:image-20220623110706-1.png||_mstalt="427869"]]
1839
1840
1841 **UART Port of LHT65N:**
1842
1843 * (% class="mark" %)**PB0: RXD**
1844 * (% class="mark" %)**PB1: TXD**
1845 * (% class="mark" %)**GND**
1846
1847 [[image:image-20220623112117-4.png||_mstalt="428350" height="459" width="343"]]
1848
1849
1850 (((
1851 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**(% style="color:red" %))(%%) 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.
1852 )))
1853
1854
1855 Input password and ATZ to activate LHT65N,As shown below:
1856
1857 [[image:image-20220615154519-3.png||_mstalt="431925" height="672" width="807"]]
1858
1859
1860 == 6.7 How to use  USB-TYPE-C to connect PC to upgrade firmware? ==
1861
1862
1863 [[image:image-20220623110706-1.png||_mstalt="427869"]]
1864
1865
1866 (% style="color:blue" %)**Step1**(%%): Install [[TremoProgrammer>>https://www.dropbox.com/sh/g99v0fxcltn9r1y/AAAnJD_qGZ42bB52o4UmH9v9a/LHT65N%20Temperature%20%26%20Humidity%20Sensor/tool?dl=0&subfolder_nav_tracking=1]]  first.
1867
1868 [[image:image-20220615170542-5.png||_mstalt="430638"]]
1869
1870
1871
1872 (% _mstmutation="1" style="color:blue" %)**Step2**(%%): wiring method.(% style="display:none" %)
1873
1874 First connect the four lines;
1875
1876 [[image:image-20220623113959-5.png||_mstalt="433485" height="528" width="397"]]
1877
1878 Connect A8 and GND with Dupont wire for a while and then separate, enter reset mode
1879
1880
1881
1882 (% style="color:blue" %)**Step3: **(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1883
1884 [[image:image-20220615171334-6.png||_mstalt="431028"]]
1885
1886
1887 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1888
1889
1890 When this interface appears, it indicates that the download has been completed.
1891
1892 [[image:image-20220620160723-8.png||_mstalt="430703"]]
1893
1894
1895 Finally,Disconnect 3.3v, Connect A8 and GND with Dupont wire for a while and then separate, exit reset mode
1896
1897
1898 == 6.8 Why can't I see the datalog information ==
1899
1900
1901 ~1. The time is not aligned, and the correct query command is not used.
1902
1903 2. Decoder error, did not parse the datalog data, the data was filtered.
1904
1905
1906 = 7. Order Info =
1907
1908
1909 Part Number: (% style="color:#4f81bd" %)** LHT65N-XX-YY**
1910
1911 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
1912
1913 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
1914 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
1915 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
1916 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
1917 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
1918 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**US915**(%%): LoRaWAN US915 band
1919 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
1920 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
1921
1922 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
1923
1924 * (% style="color:red" %)**E3**(%%): External Temperature Probe
1925
1926
1927 = 8. Packing Info =
1928
1929
1930 **Package Includes**:
1931
1932 * LHT65N Temperature & Humidity Sensor x 1
1933 * Optional external sensor
1934
1935 **Dimension and weight**:
1936
1937 * Device Size:  10 x 10 x 3.5 mm
1938 * Device Weight: 120.5g
1939
1940
1941 = 9. Reference material =
1942
1943
1944 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0]]
1945
1946
1947 = 10. FCC Warning =
1948
1949
1950 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
1951
1952 (1) This device may not cause harmful interference;
1953
1954 (2) this device must accept any interference received, including interference that may cause undesired operation.

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