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Version 262.1 by Bei Jinggeng on 2023/09/28 16:59
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1 (% style="text-align:center" %)
2 [[image:image-20230717152014-10.png||height="575" width="339"]]
3
4
5
6 **Table of Contents:**
7
8 {{toc/}}
9
10
11
12
13
14 = 1. Introduction =
15
16 == 1.1 What is LHT65N LoRaWAN (% style="display:none" %) (%%)Temperature & Humidity Sensor ==
17
18
19 (((
20 The Dragino LHT65N (% style="display:none" %) (%%)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.**
21 )))
22
23 (((
24 The LHT65N allows users to send data and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, building automation, and so on.
25 )))
26
27 (((
28 LHT65N has a built-in 2400mAh non-chargeable battery which can be used for up to 10 years*.
29 )))
30
31 (((
32 LHT65N is full compatible with LoRaWAN v1.0.3 Class A protocol, it can work with a standard LoRaWAN gateway.
33 )))
34
35 (((
36 LHT65N supports (% style="color:#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.
37 )))
38
39 (((
40 *The actual battery life depends on how often to send data, please see the battery analyzer chapter.
41 )))
42
43
44 == 1.2 Features ==
45
46
47 * LoRaWAN v1.0.3 Class A protocol
48 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915
49 * AT Commands to change parameters
50 * Remote configure parameters via LoRaWAN Downlink
51 * Firmware upgradeable via program port
52 * Built-in 2400mAh battery for up to 10 years of use.
53 * Built-in Temperature & Humidity sensor
54 * Optional External Sensors
55 * Tri-color LED to indicate working status
56 * Datalog feature (Max 3328 records)
57
58 == 1.3 Specification ==
59
60
61 (% style="color:#037691" %)**Built-in Temperature Sensor:**
62
63 * Resolution: 0.01 °C
64 * Accuracy Tolerance : Typ ±0.3 °C
65 * Long Term Drift: < 0.02 °C/yr
66 * Operating Range: -40 ~~ 85 °C
67
68 (% style="color:#037691" %)**Built-in Humidity Sensor:**
69
70 * Resolution: 0.04 %RH
71 * Accuracy Tolerance : Typ ±3 %RH
72 * Long Term Drift: < 0.02 °C/yr
73 * Operating Range: 0 ~~ 96 %RH
74
75 (% style="color:#037691" %)**External Temperature Sensor:**
76
77 * Resolution: 0.0625 °C
78 * ±0.5°C accuracy from -10°C to +85°C
79 * ±2°C accuracy from -55°C to +125°C
80 * Operating Range: -55 °C ~~ 125 °C
81
82 = 2. Connect LHT65N to IoT Server =
83
84 == 2.1 How does LHT65N work? ==
85
86
87 (((
88 LHT65N is configured as LoRaWAN OTAA Class A mode by default. Each LHT65N is shipped with a worldwide unique set of OTAA keys. To use LHT65N in a LoRaWAN network, first, we need to put the OTAA keys in LoRaWAN Network Server and then activate LHT65N.
89 )))
90
91 (((
92 If LHT65N is under the coverage of this LoRaWAN network. LHT65N can join the LoRaWAN network automatically. After successfully joining, LHT65N will start to measure environment temperature and humidity, and start to transmit sensor data to the LoRaWAN server. The default period for each uplink is 20 minutes.
93 )))
94
95
96 == 2.2 How to Activate LHT65N? ==
97
98
99 (((
100 The LHT65N has two working modes:
101 )))
102
103 * (((
104 (% style="color:blue" %)**Deep Sleep Mode**(%%): LHT65N doesn't have any LoRaWAN activation. This mode is used for storage and shipping to save battery life.
105 )))
106 * (((
107 (% style="color:blue" %)**Working Mode**(%%):  In this mode, LHT65N works as LoRaWAN Sensor mode to Join LoRaWAN network and send out the sensor data to the server. Between each sampling/tx/rx periodically, LHT65N will be in STOP mode (IDLE mode), in STOP mode, LHT65N has the same power consumption as Deep Sleep mode. 
108 )))
109
110 (((
111 The LHT65N is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
112 )))
113
114
115 [[image:image-20230717144740-2.png||height="391" width="267"]]
116
117 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
118 |=(% 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**
119 |(% 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" %)(((
120 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.
121 )))
122 |(% 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" %)(((
123 (% style="background-color:#f2f2f2; color:green" %)**Green led**(%%) will fast blink 5 times, LHT65N will enter working mode and start to JOIN LoRaWAN network.
124 (% style="background-color:#f2f2f2; color:green" %)**Green led**(%%) will solidly turn on for 5 seconds after join in network.
125 )))
126 |(% 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.
127
128 == 2.3 Example to join LoRaWAN network ==
129
130
131 (% class="wikigeneratedid" %)
132 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.
133
134
135 (% class="wikigeneratedid" %)
136 [[image:image-20220522232442-1.png||_mstalt="427830" height="387" width="648"]]
137
138
139 (((
140 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:
141 )))
142
143
144 === 2.3.1 Step 1: Create Device n TTN ===
145
146
147 (((
148 Create a device in TTN V3 with the OTAA keys from LHT65N.
149 )))
150
151 (((
152 Each LHT65N is shipped with a sticker with its device EUI, APP Key and APP EUI as below:
153 )))
154
155 [[image:image-20230426083319-1.png||height="258" width="556"]]
156
157 User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:
158
159 Add APP EUI in the application.
160
161
162 [[image:image-20220522232916-3.png||_mstalt="430495"]]
163
164
165 [[image:image-20220522232932-4.png||_mstalt="430157"]]
166
167
168 [[image:image-20220522232954-5.png||_mstalt="431847"]]
169
170
171
172 (% style="color:red" %)**Note: LHT65N use same payload as LHT65.**
173
174
175 [[image:image-20220522233026-6.png||_mstalt="429403"]]
176
177
178 Input APP EUI,  APP KEY and DEV EUI:
179
180
181 [[image:image-20220522233118-7.png||_mstalt="430430"]]
182
183
184 === 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
185
186
187 (((
188 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.
189 )))
190
191 [[image:image-20220522233300-8.png||_mstalt="428389" height="219" width="722"]]
192
193
194 == 2.4 Uplink Payload (Fport~=2) ==
195
196
197 (((
198 The uplink payload includes totally 11 bytes. Uplink packets use FPORT=2 and (% style="color:#4f81bd" %)**every 20 minutes**(%%) send one uplink by default.
199 )))
200
201 (((
202 After each uplink, the (% style="color:blue" %)**BLUE LED**(%%) will blink once.
203 )))
204
205 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:390px" %)
206 |=(% style="width: 60px;background-color:#D9E2F3;color:#0070C0" %)(((
207 **Size(bytes)**
208 )))|=(% style="width: 30px;background-color:#D9E2F3;color:#0070C0" %)(((
209 **2**
210 )))|=(% style="width: 100px;background-color:#D9E2F3;color:#0070C0" %)(((
211 **2**
212 )))|=(% style="width: 100px;background-color:#D9E2F3;color:#0070C0" %)(((
213 **2**
214 )))|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((
215 **1**
216 )))|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((
217 **4**
218 )))
219 |(% style="width:97px" %)(((
220 **Value**
221 )))|(% style="width:39px" %)(((
222 [[BAT>>||anchor="H2.4.2BAT-BatteryInfo"]]
223 )))|(% style="width:100px" %)(((
224 (((
225 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
226 )))
227 )))|(% style="width:77px" %)(((
228 (((
229 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
230 )))
231 )))|(% style="width:47px" %)(((
232 [[Ext>>||anchor="H2.4.5Ext23"]] #
233 )))|(% style="width:51px" %)(((
234 [[Ext value>>||anchor="H2.4.6Extvalue"]]
235 )))
236
237 * The First 6 bytes: has fix meanings for every LHT65N.
238
239 * The 7th byte (EXT #): defines the external sensor model.
240
241 * 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.)
242
243 === 2.4.1 Decoder in TTN V3 ===
244
245
246 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.
247
248 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]]
249
250
251 [[image:image-20220522234118-10.png||_mstalt="451464" height="353" width="729"]]
252
253
254 === 2.4.2 BAT-Battery Info ===
255
256
257 These two bytes of BAT include the battery state and the actually voltage.
258
259 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:477px" %)
260 |=(% style="width: 69px; background-color:#D9E2F3;color:#0070C0" %)(((
261 **Bit(bit)**
262 )))|=(% style="width: 253px;background-color:#D9E2F3;color:#0070C0" %)[15:14]|=(% style="width: 155px;background-color:#D9E2F3;color:#0070C0" %)[13:0]
263 |(% style="width:66px" %)(((
264 **Value**
265 )))|(% style="width:250px" %)(((
266 BAT Status
267 00(b): Ultra Low ( BAT <= 2.50v)
268 01(b): Low (2.50v <=BAT <= 2.55v)
269 10(b): OK (2.55v <= BAT <=2.65v)
270 11(b): Good (BAT >= 2.65v)
271 )))|(% style="width:152px" %)Actually BAT voltage
272
273 **(b)stands for binary**
274
275
276 [[image:image-20220522235639-1.png||_mstalt="431392" height="139" width="727"]]
277
278
279 Check the battery voltage for LHT65N.
280
281 * BAT status=(0Xcba4>>14)&0xFF=11 (BIN) ，very good
282
283 * Battery Voltage =0xCBA4&0x3FFF=0x0BA4=2980mV
284
285 === 2.4.3 Built-in Temperature ===
286
287
288 [[image:image-20220522235639-2.png||_mstalt="431756" height="138" width="722"]]
289
290 * Temperature:  0x0ABB/100=27.47℃
291
292 [[image:image-20220522235639-3.png||_mstalt="432120"]]
293
294 * Temperature:  (0xF5C6-65536)/100=-26.18℃
295
296 (% style="display:none" %)
297
298 === 2.4.4 Built-in Humidity ===
299
300
301 [[image:image-20220522235639-4.png||_mstalt="432484" height="138" width="722"]]
302
303 * Humidity:    0x025C/10=60.4%
304
305 (% style="display:none" %)
306
307 === 2.4.5 Ext # ===
308
309
310 Bytes for External Sensor:
311
312 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:425px" %)
313 |=(% style="width: 102px; background-color:#D9E2F3;color:#0070C0" %)**EXT # **Value|=(% style="width: 323px;background-color:#D9E2F3;color:#0070C0" %)External Sensor Type
314 |(% style="width:102px" %)0x01|(% style="width:319px" %)Sensor E3, Temperature Sensor
315 |(% style="width:102px" %)0x09|(% style="width:319px" %)Sensor E3, Temperature Sensor, Datalog Mod
316
317 === 2.4.6 Ext value ===
318
319 ==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
320
321
322 [[image:image-20220522235639-5.png||_mstalt="432848"]]
323
324
325 * DS18B20 temp=0x0ADD/100=27.81℃
326
327 The last 2 bytes of data are meaningless
328
329
330
331 [[image:image-20220522235639-6.png||_mstalt="433212"]]
332
333
334 * External temperature= (0xF54F-65536)/100=-27.37℃
335
336 F54F :  (F54F & 8000 == 1) , temp = (F54F - 65536)/100 = 27.37℃
337
338 （0105 & 8000：Judge whether the highest bit is 1, when the highest bit is 1, it is negative）
339
340 The last 2 bytes of data are meaningless
341
342 If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
343
344
345
346 ==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
347
348
349 (((
350 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:
351 )))
352
353 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:480px" %)
354 |=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((
355 **Size(bytes)**
356 )))|=(% style="width: 70px;background-color:#D9E2F3;color:#0070C0" %)(((
357 **2**
358 )))|=(% style="width: 120px;background-color:#D9E2F3;color:#0070C0" %)(((
359 **2**
360 )))|=(% style="width: 120px;background-color:#D9E2F3;color:#0070C0" %)(((
361 **2**
362 )))|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((
363 **1**
364 )))|=(% style="width: 70px;background-color:#D9E2F3;color:#0070C0" %)(((
365 **4**
366 )))
367 |(% style="width:110px" %)(((
368 **Value**
369 )))|(% style="width:71px" %)(((
370 External temperature
371 )))|(% style="width:99px" %)(((
372 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
373 )))|(% style="width:132px" %)(((
374 BAT Status & [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
375 )))|(% style="width:54px" %)(((
376 Status & Ext
377 )))|(% style="width:64px" %)(((
378 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp"]]
379 )))
380
381 * **Battery status & Built-in Humidity**
382
383 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:461px" %)
384 |=(% 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]
385 |(% style="width:67px" %)**Value**|(% style="width:256px" %)(((
386 BAT Status
387 00(b): Ultra Low ( BAT <= 2.50v)
388 01(b): Low  (2.50v <=BAT <= 2.55v)
389 10(b): OK   (2.55v <= BAT <=2.65v)
390 11(b): Good   (BAT >= 2.65v)
391 )))|(% style="width:132px" %)(((
392 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
393 )))
394
395 * **Status & Ext Byte**
396
397 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:500px" %)
398 |(% 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]**
399 |(% 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)
400
401 * (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
402 * (% 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.
403 * (% 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)
404
405 ==== 2.4.6.3 Ext~=6, ADC Sensor(use with E2 Cable) ====
406
407
408 In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
409
410 be used to power the external ADC sensor; user can control the power on time for this
411
412 (% style="color:blue" %)**sensor by setting:**
413
414 **AT+EXT=6,timeout**  (% style="color:red" %)**Time to power this sensor, from 0 ~~ 65535ms**
415
416 **For example:**
417
418 AT+EXT=6,1000 will power this sensor for 1000ms before sampling the ADC value.
419
420
421 Or use **downlink command A2** to set the same.
422
423 The measuring range of the node is only about 0.1V to 1.1V The voltage resolution is about 0.24mv.
424
425 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.
426
427 [[image:image-20220628150112-1.png||_mstalt="427414" height="241" width="285"]]
428
429
430 When ADC_IN1 pin is connected to GND or suspended, ADC value is 0
431
432 [[image:image-20220628150714-4.png||_mstalt="431054"]]
433
434
435 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.
436
437
438 1) The minimum range is about 0.1V. Each chip has internal calibration, so this value is close to 0.1V
439
440 [[image:image-20220628151005-5.png||_mstalt="429546"]]
441
442
443 2) The maximum range is about 1.1V. Each chip has internal calibration, so this value is close to 1.1v
444
445 [[image:image-20220628151056-6.png||_mstalt="431873"]]
446
447
448 3) Within range
449
450 [[image:image-20220628151143-7.png||_mstalt="431210"]]
451
452
453
454 ==== 2.4.6.4 Ext~=2 TMP117 Sensor((% style="display:none" %) (%%)Since Firmware v1.3)(% style="display:none" %) (%%) ====
455
456 [[image:image-20230717151328-8.png]]
457
458 (% style="display:none" %) (%%)
459
460
461
462 (% style="color:blue" %)**Ext=2,Temperature Sensor(TMP117)：**
463
464 [[image:image-20220906102307-7.png||_mstalt="430443"]]
465
466
467 (% style="color:blue" %)**Interrupt Mode and Counting Mode:**(% style="color:blue; display:none" %)** **
468
469 The external cable NE2 can be use for MOD4 and MOD8
470
471
472
473 ==== 2.4.6.5 Ext~=11 SHT31 Sensor ((% style="display:none" %) (%%)Since Firmware v1.4.1) ====
474
475
476
477 [[image:image-20230717151245-7.png]]
478
479 (% style="color:blue" %)**Ext=11,Temperature & Humidity Sensor(SHT31)：**
480
481 [[image:SHT31.png]]
482
483
484
485 ==== 2.4.6.6 Ext~=4 Interrupt Mode(Since Firmware v1.3) ====
486
487
488 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will send an uplink when there is a trigger.**
489
490
491 (% style="color:blue" %)**Interrupt Mode can be used to connect to external interrupt sensors such as:**
492
493 (% style="color:#037691" %)**Case 1: Door Sensor.** (%%)3.3v Out for such sensor is just to detect Open/Close.
494
495 In Open State, the power consumption is the same as if there is no probe
496
497 In Close state, the power consumption will be 3uA higher than normal.
498
499 [[image:image-20220906100852-1.png||_mstalt="429156" height="205" width="377"]]
500
501
502 Ext=4,Interrupt Sensor：
503
504 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:504px" %)
505 |(% style="width:101px" %)(((
506 **AT+EXT=4,1**
507 )))|(% style="width:395px" %)(((
508 **Sent uplink packet in both rising and falling interrupt**
509 )))
510 |(% style="width:101px" %)(((
511 **AT+EXT=4,2**
512 )))|(% style="width:395px" %)(((
513 **Sent uplink packet only in falling interrupt**
514 )))
515 |(% style="width:101px" %)(((
516 **AT+EXT=4,3**
517 )))|(% style="width:395px" %)(((
518 **Sent uplink packet only in rising interrupt**
519 )))
520
521 Trigger by falling edge:
522
523 [[image:image-20220906101145-2.png||_mstalt="428324"]]
524
525
526 Trigger by raising edge：
527
528 [[image:image-20220906101145-3.png||_mstalt="428688"]]
529
530
531
532 ==== 2.4.6.7 Ext~=8 Counting Mode(Since Firmware v1.3) ====
533
534
535 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will count for every interrupt and uplink periodically.**
536
537
538 (% 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.
539
540 [[image:image-20220906101320-4.png||_mstalt="427336" height="366" width="698"]]
541
542
543 (% 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
544
545 [[image:image-20220906101320-5.png||_mstalt="427700" height="353" width="696"]]
546
547
548 Ext=8, Counting Sensor ( 4 bytes)：
549
550 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:330px" %)
551 |(% style="width:131px" %)(((
552 **AT+EXT=8,0**
553 )))|(% style="width:195px" %)(((
554 **Count at falling interrupt**
555 )))
556 |(% style="width:131px" %)(((
557 **AT+EXT=8,1**
558 )))|(% style="width:195px" %)(((
559 **Count at rising interrupt**
560 )))
561 |(% style="width:131px" %)(((
562 **AT+SETCNT=60**
563 )))|(% style="width:195px" %)(((
564 **Sent current count to 60**
565 )))
566
567 [[image:image-20220906101320-6.png||_mstalt="428064"]]
568
569
570 (% style="color:blue" %)**A2 downlink Command：**
571
572 A2 02:  Same as AT+EXT=2 (AT+EXT= second byte)
573
574 A2 06 01 F4:  Same as AT+EXT=6,500 (AT+EXT= second byte, third and fourth bytes)
575
576 A2 04 02:  Same as AT+EXT=4,2 (AT+EXT= second byte, third byte)
577
578 A2 08 01 00:  Same as AT+EXT=8,0 (AT+EXT= second byte, fourth byte)
579
580 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)
581
582
583 ==== 2.4.6.8 Ext~=10, E2 sensor (TMP117)with Unix Timestamp(Since firmware V1.3.2) ====
584
585
586 (((
587 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:
588 )))
589
590 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:480px" %)
591 |=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((
592 **Size(bytes)**
593 )))|=(% style="width: 70px;background-color:#D9E2F3;color:#0070C0" %)(((
594 **2**
595 )))|=(% style="width: 120px;background-color:#D9E2F3;color:#0070C0" %)(((
596 **2**
597 )))|=(% style="width: 120px;background-color:#D9E2F3;color:#0070C0" %)(((
598 **2**
599 )))|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((
600 **1**
601 )))|=(% style="width: 70px;background-color:#D9E2F3;color:#0070C0" %)(((
602 **4**
603 )))
604 |(% style="width:110px" %)(((
605 **Value**
606 )))|(% style="width:71px" %)(((
607 External temperature
608 )))|(% style="width:99px" %)(((
609 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
610 )))|(% style="width:132px" %)(((
611 BAT Status & [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
612 )))|(% style="width:54px" %)(((
613 Status & Ext
614 )))|(% style="width:64px" %)(((
615 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp"]]
616 )))
617
618 * **Battery status & Built-in Humidity**
619
620 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:461px" %)
621 |=(% 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]
622 |(% style="width:67px" %)**Value**|(% style="width:256px" %)(((
623 BAT Status
624 00(b): Ultra Low ( BAT <= 2.50v)
625 01(b): Low  (2.50v <=BAT <= 2.55v)
626 10(b): OK   (2.55v <= BAT <=2.65v)
627 11(b): Good   (BAT >= 2.65v)
628 )))|(% style="width:132px" %)(((
629 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
630 )))
631
632 * **Status & Ext Byte**
633
634 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:500px" %)
635 |(% 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]**
636 |(% 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)
637
638 * (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
639 * (% 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.
640 * (% 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)
641
642 == 2.5 Show data on Datacake ==
643
644
645 (((
646 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:
647 )))
648
649
650 (((
651 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the LoRaWAN network.
652 )))
653
654 (((
655 (% 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.
656 )))
657
658
659 (((
660 Add Datacake:
661 )))
662
663
664 [[image:image-20220523000825-7.png||_mstalt="429884" height="262" width="583"]]
665
666
667
668 Select default key as Access Key:
669
670
671 [[image:image-20220523000825-8.png||_mstalt="430248" height="453" width="406"]]
672
673
674 In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/]]) , add LHT65 device.
675
676
677 [[image:image-20220523000825-9.png||_mstalt="430612" height="366" width="392"]]
678
679
680 [[image:image-20220523000825-10.png||_mstalt="450619" height="413" width="728"]]
681
682
683 == 2.6 Datalog Feature ==
684
685
686 (((
687 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.
688 )))
689
690
691 === 2.6.1 Ways to get datalog via LoRaWAN ===
692
693
694 There are two methods:
695
696 (% style="color:blue" %)**Method 1:** (%%)IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specified time range.
697
698
699 (% 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.
700
701
702 (% style="color:red" %)**Note for method 2:**
703
704 * a) LHT65N will do an ACK check for data records sending to make sure every data arrive server.
705 * 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.
706
707 Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
708
709
710 [[image:image-20220703111700-2.png||_mstalt="426244" height="381" width="1119"]]
711
712
713 === 2.6.2 Unix TimeStamp ===
714
715
716 LHT65N uses Unix TimeStamp format based on
717
718
719 [[image:image-20220523001219-11.png||_mstalt="450450" height="97" width="627"]]
720
721
722
723 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :
724
725 Below is the converter example
726
727 [[image:image-20220523001219-12.png||_mstalt="450827" height="298" width="720"]]
728
729
730 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
731
732
733 === 2.6.3 Set Device Time ===
734
735
736 (((
737 (% style="color:blue" %)**There are two ways to set device's time:**
738 )))
739
740 (((
741 **1.  Through LoRaWAN MAC Command (Default settings)**
742 )))
743
744 (((
745 User need to set SYNCMOD=1 to enable sync time via MAC command.
746 )))
747
748 (((
749 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).
750 )))
751
752 (((
753 (% 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.**
754 )))
755
756
757 (((
758 **2. Manually Set Time**
759 )))
760
761 (((
762 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
763 )))
764
765
766 === 2.6.4 Poll sensor value ===
767
768
769 User can poll sensor value based on timestamps from the server. Below is the downlink command.
770
771 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:428px" %)
772 |(% 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**
773 |(% style="width:58px" %)31|(% style="width:128px" %)Timestamp start|(% style="width:123px" %)Timestamp end|(% style="width:116px" %)Uplink Interval
774
775 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.
776
777 For example, downlink command (% _mstmutation="1" %)**31 5FC5F350 5FC6 0160 05**(%%)
778
779 Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00's data
780
781 Uplink Internal =5s, means LHT65N will send one packet every 5s. range 5~~255s.
782
783
784 === 2.6.5 Datalog Uplink payload ===
785
786
787 The Datalog poll reply uplink will use below payload format.
788
789 **Retrieval data payload:**
790
791 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:480px" %)
792 |=(% style="width: 60px;background-color:#D9E2F3;color:#0070C0" %)(((
793 **Size(bytes)**
794 )))|=(% 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**
795 |(% 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"]]
796
797 **Poll message flag & Ext:**
798
799 [[image:image-20221006192726-1.png||_mstalt="430508" height="112" width="754"]]
800
801 (% 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)
802
803 (% style="color:blue" %)**Poll Message Flag**(%%): 1: This message is a poll message reply.
804
805 * Poll Message Flag is set to 1.
806
807 * Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
808
809 For example, in US915 band, the max payload for different DR is:
810
811 (% style="color:blue" %)**a) DR0:** (%%)max is 11 bytes so one entry of data
812
813 (% style="color:blue" %)**b) DR1:**(%%) max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
814
815 (% style="color:blue" %)**c) DR2:**(%%) total payload includes 11 entries of data
816
817 (% style="color:blue" %)**d) DR3: **(%%)total payload includes 22 entries of data.
818
819 If devise doesn't have any data in the polling time. Device will uplink 11 bytes of 0   
820
821
822 **Example:**
823
824 If LHT65N has below data inside Flash:
825
826 [[image:image-20230426171833-4.png]]
827
828
829 If user sends below downlink command: (% style="background-color:yellow" %)3160065F9760066DA705
830
831 Where : Start time: 60065F97 = time 21/1/19 04:27:03
832
833 Stop time: 60066DA7= time 21/1/19 05:27:03
834
835
836 **LHT65N will uplink this payload.**
837
838 [[image:image-20220523001219-13.png||_mstalt="451204" height="421" style="text-align:left" width="727"]]
839
840
841 __**7FFF089801464160065F97**__ **__7FFF__ __088E__ __014B__ __41__ __60066009__** 7FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
842
843 Where the first 11 bytes is for the first entry:
844
845 7FFF089801464160065F97
846
847 Ext sensor data=0x7FFF/100=327.67
848
849 Temp=0x088E/100=22.00
850
851 Hum=0x014B/10=32.6
852
853 poll message flag & Ext=0x41,means reply data,Ext=1
854
855 Unix time is 0x60066009=1611030423s=21/1/19 04:27:03
856
857
858 == 2.7 Alarm Mode & Feature "Multi sampling, one uplink" ==
859
860
861 (((
862 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.
863 )))
864
865 (((
866 (% style="color:red" %)**Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.**
867
868
869 === 2.7.1 ALARM MODE ( Since v1.3.1 firmware) ===
870
871
872 **Internal GXHT30 temperature alarm(Acquisition time: fixed at one minute)**
873
874 (((
875 (% class="box infomessage" %)
876 (((
877 **AT+WMOD=3**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)
878
879 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
880
881 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
882
883 (% _mstmutation="1" %)**AT+ARTEMP=? **(%%):  Gets the alarm range of the internal temperature sensor(% style="display:none" %)
884
885 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
886
887 **AT+LEDALARM=1** :       Enable LED visual Alarm.
888 )))
889 )))
890
891 (% style="color:#4f81bd" %)**Downlink Command:**
892
893 AT+WMOD=1:  A501  , AT+WMOD=0 :  A600
894
895 AT+CITEMP=1 : A60001
896
897 AT+ARTEMP=1,60  :  A70001003C
898
899 AT+ARTEMP=-16,60 :  A7FFF0003C
900
901 AT+LEDALARM=1  :  3601
902
903
904 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
905
906 Total bytes: 8 bytes
907
908 **Example: **AA0100010001003C
909
910 WMOD=01
911
912 CITEMP=0001
913
914 TEMPlow=0001
915
916 TEMPhigh=003C
917
918
919 **DS18B20 and TMP117 Threshold Alarm**
920
921 **~ AT+WMOD=1,60,-10,20**
922
923 (% style="color:#4f81bd" %)**Downlink Command:**
924
925 **Example: **A5013CFC180014
926
927 MOD=01
928
929 CITEMP=3C(S)
930
931 TEMPlow=FC18
932
933 TEMPhigh=0014
934
935
936 **Fluctuation alarm for DS18B20 and TMP117(Acquisition time: minimum 1s)**
937
938 **AT+WMOD=2,60,5** 
939
940 (% style="color:#4f81bd" %)**Downlink Command:**
941
942 **Example: **A5023C05
943
944 MOD=02
945
946 CITEMP=3C(S)
947
948 temperature fluctuation=05
949
950
951 **Sampling multiple times and uplink together**
952
953 **AT+WMOD=3,1,60,20,-16,32,1**   
954
955 Explain:
956
957 * (% style="color:#037691" %)**parameter1: **(%%)Set Working Mode to **Mode 3**
958 * (% style="color:#037691" %)**parameter2:**(%%) Set the temperature sampling mode to** 1**(1:DS18B20;2:TMP117;3:** **Internal GXHT30).
959 * (% style="color:#037691" %)**parameter3: **(%%)Sampling Interval is **60**s.
960 * (% 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)
961 * (% style="color:#037691" %)**parameter5 & parameter6: **(%%)Temperature alarm range is **-16** to **32**°C,
962 * (% 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.
963
964 (% style="color:#4f81bd" %)**Downlink Command:**
965
966 **Example: **A50301003C14FFF0002001
967
968 MOD=03
969
970 TEMP=DS18B20
971
972 CITEMP=003C(S)
973
974 Total number of acquisitions=14
975
976 TEMPlow=FFF0
977
978 TEMPhigh=0020
979
980 ARTEMP=01
981
982
983 **Uplink payload( Fport=3)**
984
985 **Example: CBEA**01**0992**//0A41//**09C4**
986
987 BatV=CBEA
988
989 TEMP=DS18B20
990
991 Temp1=0992  ~/~/ 24.50℃
992
993 Temp2=0A41  ~/~/ 26.25℃
994
995 Temp3=09C4  ~/~/ 25.00℃
996
997 (% style="color:red" %)**Note: This uplink will automatically select the appropriate DR according to the data length**
998
999 (% style="color:red" %)** In this mode, the temperature resolution of ds18b20 is 0.25℃ to save power consumption**
1000 )))
1001
1002
1003 === 2.7.2 ALARM MODE ( Before v1.3.1 firmware) ===
1004
1005
1006 (% class="box infomessage" %)
1007 (((
1008 (((
1009 **AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)
1010 )))
1011
1012 (((
1013 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
1014 )))
1015
1016 (((
1017 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
1018 )))
1019
1020 (((
1021 (% _mstmutation="1" %)**AT+ARTEMP=? **(%%):  Gets the alarm range of the internal temperature sensor(% style="display:none" %)
1022 )))
1023
1024 (((
1025 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
1026 )))
1027 )))
1028
1029 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
1030
1031 Total bytes: 8 bytes
1032
1033 **Example:**AA0100010001003C
1034
1035 WMOD=01
1036
1037 CITEMP=0001
1038
1039 TEMPlow=0001
1040
1041 TEMPhigh=003C
1042
1043
1044 == 2.8 LED Indicator ==
1045
1046
1047 The LHT65 has a triple color LED which for easy showing different stage .
1048
1049 While user press ACT button, the LED will work as per LED status with ACT button.
1050
1051 In a normal working state:
1052
1053 * For each uplink, the BLUE LED or RED LED will blink once.
1054 BLUE LED when external sensor is connected.
1055 * RED LED when external sensor is not connected
1056 * For each success downlink, the PURPLE LED will blink once
1057
1058 == 2.9 installation ==
1059
1060
1061 [[image:image-20220516231650-1.png||_mstalt="428597" height="436" width="428"]]
1062
1063
1064 = 3. Sensors and Accessories =
1065
1066 == 3.1 E2 Extension Cable ==
1067
1068
1069 [[image:image-20220619092222-1.png||_mstalt="429533" height="182" width="188"]][[image:image-20220619092313-2.png||_mstalt="430222" height="182" width="173"]]
1070
1071
1072 **1m long breakout cable for LHT65N. Features:**
1073
1074 * (((
1075 Use for AT Command, works for both LHT52/LHT65N
1076 )))
1077 * (((
1078 Update firmware for LHT65N, works for both LHT52/LHT65N
1079 )))
1080 * (((
1081 Supports ADC mode to monitor external ADC
1082 )))
1083 * (((
1084 Supports Interrupt mode
1085 )))
1086 * (((
1087 Exposed All pins from the LHT65N Type-C connector.
1088
1089
1090
1091 )))
1092
1093 [[image:image-20220619092421-3.png||_mstalt="430547" height="371" width="529"]]
1094
1095
1096 == 3.2 E3 Temperature Probe ==
1097
1098
1099 [[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"]]
1100
1101
1102 Temperature sensor with 2 meters cable long
1103
1104 * Resolution: 0.0625 °C
1105 * ±0.5°C accuracy from -10°C to +85°C
1106 * ±2°C accuracy from -55°C to +125°C
1107 * Operating Range: -40 ~~ 125 °C
1108 * Working voltage 2.35v ~~ 5v
1109
1110 == 3.3 E31F Temperature Probe ==
1111
1112
1113 [[image:65N-E31F-1.jpg||height="169" width="170"]] [[image:image-20230717151424-9.png||height="221" width="204"]](% style="display:none" %)
1114
1115
1116 Temperature sensor with 1 meters cable long
1117
1118
1119 **Built-in Temperature Sensor:**
1120
1121 * Resolution: 0.01 °C
1122 * Accuracy Tolerance : Typ ±0.3 °C
1123 * Long Term Drift: < 0.02 °C/yr
1124 * Operating Range: -40 ~~ 80 °C
1125
1126 **Built-in Humidity Sensor:**
1127
1128 * Resolution: 0.04 % RH
1129 * Accuracy Tolerance : Typ ±3 % RH
1130 * Long Term Drift: < 0.02 °C/yr
1131 * Operating Range: 0 ~~ 96 % RH
1132
1133 **External Temperature Sensor :**
1134
1135 * Resolution: 0.01 °C
1136 * Accuracy Tolerance : Typical ±0.3 °C
1137 * Long Term Drift: < 0.02 °C/yr
1138 * Operating Range: -40 ~~ 125 °C
1139
1140 **External 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 = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1148
1149
1150 (((
1151 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
1152 )))
1153
1154 * (((
1155 AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
1156 )))
1157
1158 * (((
1159 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
1160 )))
1161
1162 (((
1163 There are two kinds of commands to configure LHT65N, they are:
1164 )))
1165
1166 * (((
1167 (% style="color:#4f81bd" %)**General Commands**.
1168 )))
1169
1170 (((
1171 These commands are to configure:
1172 )))
1173
1174 1. (((
1175 General system settings like: uplink interval.
1176 )))
1177 1. (((
1178 LoRaWAN protocol & radio-related commands.
1179 )))
1180
1181 (((
1182 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]]
1183 )))
1184
1185 * (((
1186 (% style="color:#4f81bd" %)**Commands special design for LHT65N**
1187 )))
1188
1189 (((
1190 These commands are only valid for LHT65N, as below:
1191 )))
1192
1193
1194 == 4.1 Set Transmit Interval Time ==
1195
1196
1197 Feature: Change LoRaWAN End Node Transmit Interval.
1198
1199
1200 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
1201
1202 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:501px" %)
1203 |(% 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**
1204 |(% style="width:155px" %)AT+TDC=?|(% style="width:162px" %)Show current transmit Interval|(% style="width:177px" %)30000 OK the interval is 30000ms = 30s
1205 |(% style="width:155px" %)AT+TDC=60000|(% style="width:162px" %)Set Transmit Interval|(% style="width:177px" %)OK Set transmit interval to 60000ms = 60 seconds
1206
1207 (% style="color:#4f81bd" %)**Downlink Command: 0x01**
1208
1209 Format: Command Code (0x01) followed by 3 bytes time value.
1210
1211 If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.
1212
1213 * **Example 1**: Downlink Payload: 0100001E  ~/~/ Set Transmit Interval (TDC) = 30 seconds
1214
1215 * **Example 2**: Downlink Payload: 0100003C  ~/~/ Set Transmit Interval (TDC) = 60 seconds
1216
1217 == 4.2 Set External Sensor Mode ==
1218
1219
1220 Feature: Change External Sensor Mode.
1221
1222 (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1223
1224 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:468px" %)
1225 |(% 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**
1226 |(% style="width:155px" %)AT+EXT=?|(% style="width:151px" %)Get current external sensor mode|(% style="width:158px" %)1 OK External Sensor mode =1
1227 |(% style="width:155px" %)AT+EXT=1|(% colspan="2" rowspan="1" style="width:309px" %)Set external sensor mode to 1
1228 |(% style="width:155px" %)AT+EXT=9|(% colspan="2" rowspan="1" style="width:309px" %)Set to external DS18B20 with timestamp
1229
1230 (% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1231
1232 Total bytes: 2 ~~ 5 bytes
1233
1234 **Example:**
1235
1236 * 0xA201: Set external sensor type to E1
1237
1238 * 0xA209: Same as AT+EXT=9
1239
1240 * 0xA20702003c: Same as AT+SETCNT=60
1241
1242 == 4.3 Enable/Disable uplink Temperature probe ID ==
1243
1244
1245 (((
1246 Feature: If PID is enabled, device will send the temperature probe ID on:
1247 )))
1248
1249 * (((
1250 First Packet after OTAA Join
1251 )))
1252 * (((
1253 Every 24 hours since the first packet.
1254 )))
1255
1256 (((
1257 PID is default set to disable (0)
1258
1259
1260 )))
1261
1262 (% style="color:#4f81bd" %)**AT Command:**
1263
1264 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:381px" %)
1265 |(% 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**
1266 |(% style="width:155px" %)AT+PID=1|(% style="width:136px" %)Enable PID uplink|(% style="width:86px" %)OK
1267
1268 (% style="color:#4f81bd" %)**Downlink Command:**
1269
1270 * **0xA800**  **~-~->** AT+PID=0
1271 * **0xA801**     **~-~->** AT+PID=1
1272
1273 == 4.4 Set Password ==
1274
1275
1276 Feature: Set device password, max 9 digits
1277
1278 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1279
1280 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:372px" %)
1281 |(% 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**
1282 |(% style="width:155px" %)AT+PWORD=?|(% style="width:124px" %)Show password|(% style="width:86px" %)(((
1283 123456
1284
1285 OK
1286 )))
1287 |(% style="width:155px" %)AT+PWORD=999999|(% style="width:124px" %)Set password|(% style="width:86px" %)OK
1288
1289 (% style="color:#4f81bd" %)**Downlink Command:**
1290
1291 No downlink command for this feature.
1292
1293
1294 == 4.5 Quit AT Command ==
1295
1296
1297 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1298
1299 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1300
1301 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:433px" %)
1302 |(% 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**
1303 |(% style="width:155px" %)AT+DISAT|(% style="width:191px" %)Quit AT Commands mode|(% style="width:86px" %)OK
1304
1305 (% style="color:#4f81bd" %)**Downlink Command:**
1306
1307 No downlink command for this feature.
1308
1309
1310 == 4.6 Set to sleep mode ==
1311
1312
1313 Feature: Set device to sleep mode
1314
1315 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1316 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1317
1318 (% style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1319
1320 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:513px" %)
1321 |(% 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**
1322 |(% style="width:155px" %)AT+SLEEP|(% style="width:139px" %)Set to sleep mode|(% style="width:213px" %)(((
1323 Clear all stored sensor data…
1324
1325 OK
1326 )))
1327
1328 (% style="color:#4f81bd" %)**Downlink Command:**
1329
1330 * There is no downlink command to set to Sleep mode.
1331
1332 == 4.7 Set system time ==
1333
1334
1335 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1336
1337 (% style="color:#4f81bd" %)**AT Command:**
1338
1339 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:506px" %)
1340 |(% style="background-color:#d9e2f3; color:#0070c0; width:188px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:318px" %)**Function**
1341 |(% style="width:154px" %)AT+TIMESTAMP=1611104352|(% style="width:285px" %)(((
1342 OK
1343
1344 Set System time to 2021-01-20 00:59:12
1345 )))
1346
1347 (% style="color:#4f81bd" %)**Downlink Command:**
1348
1349 0x306007806000  ~/~/  Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1350
1351
1352 == 4.8 Set Time Sync Mode ==
1353
1354
1355 (((
1356 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1357 )))
1358
1359 (((
1360 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.
1361 )))
1362
1363 (% style="color:#4f81bd" %)**AT Command:**
1364
1365 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:475px" %)
1366 |(% style="background-color:#d9e2f3; color:#0070c0; width:156px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:315px" %)**Function**
1367 |(% style="width:156px" %)AT+SYNCMOD=1|(% style="width:315px" %)Enable Sync system time via LoRaWAN MAC Command (DeviceTimeReq)
1368
1369 (% style="color:#4f81bd" %)**Downlink Command:**
1370
1371 0x28 01  ~/~/  Same As AT+SYNCMOD=1
1372 0x28 00  ~/~/  Same As AT+SYNCMOD=0
1373
1374
1375 == 4.9 Set Time Sync Interval ==
1376
1377
1378 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1379
1380 (% style="color:#4f81bd" %)**AT Command:**
1381
1382 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:472px" %)
1383 |(% style="background-color:#d9e2f3; color:#0070c0; width:158px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:314px" %)**Function**
1384 |(% style="width:156px" %)AT+SYNCTDC=0x0A |(% style="width:311px" %)Set SYNCTDC to 10 (0x0A), so the sync time is 10 days.
1385
1386 (% style="color:#4f81bd" %)**Downlink Command:**
1387
1388 **0x29 0A**  ~/~/ Same as AT+SYNCTDC=0x0A
1389
1390
1391 == 4.10 Print data entries base on page. ==
1392
1393
1394 Feature: Print the sector data from start page to stop page (max is 416 pages).
1395
1396 (% style="color:#4f81bd" %)**AT Command: AT+PDTA**
1397
1398 [[image:image-20230426164330-2.png]]
1399
1400 (% style="color:#4f81bd" %)**Downlink Command:**
1401
1402 No downlink commands for feature
1403
1404
1405 == 4.11 Print last few data entries. ==
1406
1407
1408 Feature: Print the last few data entries
1409
1410 (% style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1411
1412 [[image:image-20230426164932-3.png]]
1413
1414 (% style="color:#4f81bd" %)**Downlink Command:**
1415
1416 No downlink commands for feature
1417
1418
1419 == 4.12 Clear Flash Record ==
1420
1421
1422 Feature: Clear flash storage for data log feature.
1423
1424 (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1425
1426 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:503px" %)
1427 |(% 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**
1428 |(% style="width:155px" %)AT+CLRDTA |(% style="width:134px" %)Clear date record|(% style="width:209px" %)(((
1429 Clear all stored sensor data…
1430
1431 OK
1432 )))
1433
1434 (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1435
1436 * Example: 0xA301  ~/~/  Same as AT+CLRDTA
1437
1438 == 4.13 Auto Send None-ACK messages ==
1439
1440
1441 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.
1442
1443 (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1444
1445 The default factory setting is 0
1446
1447 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:367px" %)
1448 |=(% 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**
1449 |(% style="width:158px" %)AT+PNACKMD=1|(% style="width:118px" %)Poll None-ACK message|(% style="width:87px" %)OK
1450
1451 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1452
1453 * Example: 0x3401  ~/~/  Same as AT+PNACKMD=1
1454
1455 == 4.14 Modified WMOD command for external sensor TMP117 or DS18B20 temperature alarm(Since firmware 1.3.0) ==
1456
1457
1458 Feature: Set internal and external temperature sensor alarms.
1459
1460 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:500px" %)
1461 |=(% 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**
1462 |(% style="width:268px" %)AT+WMOD=parameter1,parameter2,parameter3,parameter4|(% style="width:255px" %)Set internal and external temperature sensor alarms|(% style="width:181px" %)OK
1463
1464 (% style="color:#037691" %)**AT+WMOD=parameter1,parameter2,parameter3,parameter4**
1465
1466 (% style="color:#037691" %)**Parameter 1**(%%):  Alarm mode:
1467
1468 0): Cancel
1469
1470 1): Threshold alarm
1471
1472 2): Fluctuation alarm
1473
1474 3):Sampling multiple times and uplink together
1475
1476
1477 (% style="color:#037691" %)** Parameter 2**(%%):  Sampling time. Unit: seconds, up to 255 seconds.
1478
1479 (% 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.**
1480
1481
1482 (% style="color:#037691" %) **Parameter 3 and parameter 4:**
1483
1484 1):  If Alarm Mode is set to 1: Parameter 3 and parameter 4 are valid, as before, they represent low temperature and high temperature.
1485
1486 Such as AT+WMOD=1,60,45,105, it means high and low temperature alarm.
1487
1488
1489 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.
1490
1491 Such as AT+WMOD=2,10,2,it means that it is a fluctuation alarm.
1492
1493 If the difference between the current collected temperature and the last Uplin is ±2 degrees, the alarm will be issued.
1494
1495
1496 3): If Alarm Mode is set to 3:
1497
1498 * (% style="color:#037691" %)**parameter1: **(%%)Set Working Mode to **Mode 3**
1499 * (% style="color:#037691" %)**parameter2:**(%%) Set the temperature sampling mode to** 1**(1:DS18B20;2:TMP117;3:** **Internal GXHT30).
1500 * (% style="color:#037691" %)**parameter3: **(%%)Sampling Interval is **60**s.
1501 * (% 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)
1502 * (% style="color:#037691" %)**parameter5 & parameter6: **(%%)Temperature alarm range is **-16** to **32**°C,
1503 * (% 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.
1504
1505
1506 (% style="color:#4f81bd" %)**Downlink Command: 0xA5**
1507
1508 0xA5 00 ~-~- AT+WMOD=0.
1509
1510 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 )
1511
1512 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))
1513
1514 0xA5 02 0A 02 ~-~- AT+WMOD=2,10,2  (AT+WMOD = second byte, third byte, fourth byte)
1515
1516 0xA5 03 01 00 3C 14 FF F0 00 20 01~-~-AT+WMOD=3,1,60,20,-16,32,1
1517
1518 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.
1519
1520
1521 = 5. Battery & How to replace =
1522
1523 == 5.1 Battery Type ==
1524
1525
1526 (((
1527 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.
1528 )))
1529
1530 (((
1531 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1532
1533
1534 [[image:image-20220515075034-1.png||_mstalt="428961" height="208" width="644"]]
1535 )))
1536
1537 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1538
1539
1540 == 5.2 Replace Battery ==
1541
1542
1543 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.
1544
1545 [[image:image-20220515075440-2.png||_mstalt="429546" height="338" width="272"]][[image:image-20220515075625-3.png||_mstalt="431574" height="193" width="257"]]
1546
1547
1548 == 5.3 Battery Life Analyze ==
1549
1550
1551 (((
1552 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:
1553 [[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]]
1554 )))
1555
1556
1557 (((
1558 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]]
1559 )))
1560
1561
1562 = 6. FAQ =
1563
1564 == 6.1 How to use AT Command? ==
1565
1566
1567 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.
1568
1569 [[image:image-20220530085651-1.png||_mstalt="429949"]]
1570
1571
1572 **Connection:**
1573
1574 * (% style="background-color:yellow" %)**USB to TTL GND <~-~->GND**
1575 * (% style="background-color:yellow" %)**USB to TTL RXD <~-~-> D+**
1576 * (% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1577
1578 (((
1579 (% _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)**
1580
1581 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.
1582 )))
1583
1584
1585 Input password and ATZ to activate LHT65N,As shown below:
1586
1587 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1588
1589
1590 AT Command List is as below:
1591
1592 AT+<CMD>? :  Help on <CMD>
1593
1594 AT+<CMD> :  Run <CMD>
1595
1596 AT+<CMD>=<value> :  Set the value
1597
1598 AT+<CMD>=? :  Get the value
1599
1600 AT+DEBUG:  Set more info output
1601
1602 ATZ:  Trig a reset of the MCU
1603
1604 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1605
1606 AT+DEUI:  Get or Set the Device EUI
1607
1608 AT+DADDR:  Get or Set the Device Address
1609
1610 AT+APPKEY:  Get or Set the Application Key
1611
1612 AT+NWKSKEY:  Get or Set the Network Session Key
1613
1614 AT+APPSKEY:  Get or Set the Application Session Key
1615
1616 AT+APPEUI:  Get or Set the Application EUI
1617
1618 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1619
1620 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1621
1622 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1623
1624 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1625
1626 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1627
1628 AT+RX2FQ:  Get or Set the Rx2 window frequency
1629
1630 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1631
1632 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1633
1634 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1635
1636 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1637
1638 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1639
1640 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1641
1642 AT+NWKID:  Get or Set the Network ID
1643
1644 AT+FCU:  Get or Set the Frame Counter Uplink
1645
1646 AT+FCD:  Get or Set the Frame Counter Downlink
1647
1648 AT+CLASS:  Get or Set the Device Class
1649
1650 AT+JOIN:  Join network
1651
1652 AT+NJS:  Get the join status
1653
1654 AT+SENDB:  Send hexadecimal data along with the application port
1655
1656 AT+SEND:  Send text data along with the application port
1657
1658 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
1659
1660 AT+RECV:  Print last received data in raw format
1661
1662 AT+VER:  Get current image version and Frequency Band
1663
1664 AT+CFM:  Get or Set the confirmation mode (0-1)
1665
1666 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1667
1668 AT+SNR:  Get the SNR of the last received packet
1669
1670 AT+RSSI:  Get the RSSI of the last received packet
1671
1672 AT+TDC:  Get or set the application data transmission interval in ms
1673
1674 AT+PORT:  Get or set the application port
1675
1676 AT+DISAT:  Disable AT commands
1677
1678 AT+PWORD: Set password, max 9 digits
1679
1680 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
1681
1682 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
1683
1684 AT+PDTA:  Print the sector data from start page to stop page
1685
1686 AT+PLDTA:  Print the last few sets of data
1687
1688 AT+CLRDTA:  Clear the storage, record position back to 1st
1689
1690 AT+SLEEP:  Set sleep mode
1691
1692 AT+EXT:  Get or Set external sensor model
1693
1694 AT+BAT:  Get the current battery voltage in mV
1695
1696 AT+CFG:  Print all configurations
1697
1698 AT+WMOD:  Get or Set Work Mode
1699
1700 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
1701
1702 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
1703
1704 AT+SETCNT:  Set the count at present
1705
1706 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
1707
1708 AT+RPL:  Get or set response level
1709
1710 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
1711
1712 AT+LEAPSEC:  Get or Set Leap Second
1713
1714 AT+SYNCMOD:  Get or Set time synchronization method
1715
1716 AT+SYNCTDC:  Get or set time synchronization interval in day
1717
1718 AT+PID:  Get or set the PID
1719
1720
1721 == 6.2 Where to use AT commands and Downlink commands ==
1722
1723
1724 **AT commands: **
1725
1726 [[image:image-20220620153708-1.png||_mstalt="429806" height="603" width="723"]]
1727
1728
1729 **Downlink commands:**
1730
1731
1732 (% style="color:blue" %)**TTN:**
1733
1734 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
1735
1736
1737
1738 (% style="color:blue" %)**Helium: **
1739
1740 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
1741
1742
1743
1744 (% style="color:blue" %)**Chirpstack: The downlink window will not be displayed until the network is accessed**
1745
1746
1747 [[image:image-20220615094850-6.png||_mstalt="433082"]]
1748
1749
1750 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
1751
1752
1753
1754 (% style="color:blue" %)**Aws:**
1755
1756 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1757
1758
1759 == 6.3 How to change the uplink interval? ==
1760
1761
1762 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);"]]
1763
1764
1765 == 6.4 How to use TTL-USB to connect a PC to input AT commands? ==
1766
1767
1768 [[image:image-20220615153355-1.png||_mstalt="430222"]]
1769
1770 [[image:1655802313617-381.png||_mstalt="293917"]]
1771
1772
1773 (((
1774 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.
1775 )))
1776
1777
1778 Input password and ATZ to activate LHT65N, As shown below:
1779
1780 [[image:image-20220615154519-3.png||_mstalt="431925" height="672" width="807"]]
1781
1782
1783 == 6.5 How to use TTL-USB to connect PC to upgrade firmware? ==
1784
1785
1786 [[image:image-20220615153355-1.png||_mstalt="430222"]]
1787
1788
1789 (% 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.
1790
1791 [[image:image-20220615170542-5.png||_mstalt="430638"]]
1792
1793
1794
1795 (% _mstmutation="1" style="color:blue" %)**Step2**(%%): wiring method.(% style="display:none" %)
1796
1797 First connect the four lines;(% style="display:none" %)
1798
1799 [[image:image-20220621170938-1.png||_mstalt="431340" height="413" width="419"]],(% style="display:none" %)
1800
1801
1802 Then use DuPont cable to short circuit port3 and port1, and then release them, so that the device enters bootlaod mode.
1803
1804 [[image:image-20220621170938-2.png||_mstalt="431704"]]
1805
1806
1807
1808 (% style="color:blue" %)**Step3: **(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1809
1810 [[image:image-20220615171334-6.png||_mstalt="431028"]]
1811
1812
1813 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1814
1815
1816 When this interface appears, it indicates that the download has been completed.
1817
1818 [[image:image-20220620160723-8.png||_mstalt="430703"]]
1819
1820
1821 Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
1822
1823
1824 == 6.6 Using USB-TYPE-C to connect to the computer using the AT command ==
1825
1826
1827 [[image:image-20220623110706-1.png||_mstalt="427869"]]
1828
1829
1830 **UART Port of LHT65N:**
1831
1832 * (% class="mark" %)**PB0: RXD**
1833 * (% class="mark" %)**PB1: TXD**
1834 * (% class="mark" %)**GND**
1835
1836 [[image:image-20220623112117-4.png||_mstalt="428350" height="459" width="343"]]
1837
1838
1839 (((
1840 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.
1841 )))
1842
1843
1844 Input password and ATZ to activate LHT65N,As shown below:
1845
1846 [[image:image-20220615154519-3.png||_mstalt="431925" height="672" width="807"]]
1847
1848
1849 == 6.7 How to use  USB-TYPE-C to connect PC to upgrade firmware? ==
1850
1851
1852 [[image:image-20220623110706-1.png||_mstalt="427869"]]
1853
1854
1855 (% 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.
1856
1857 [[image:image-20220615170542-5.png||_mstalt="430638"]]
1858
1859
1860
1861 (% _mstmutation="1" style="color:blue" %)**Step2**(%%): wiring method.(% style="display:none" %)
1862
1863 First connect the four lines;
1864
1865 [[image:image-20220623113959-5.png||_mstalt="433485" height="528" width="397"]]
1866
1867 Connect A8 and GND with Dupont wire for a while and then separate, enter reset mode
1868
1869
1870
1871 (% style="color:blue" %)**Step3: **(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1872
1873 [[image:image-20220615171334-6.png||_mstalt="431028"]]
1874
1875
1876 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1877
1878
1879 When this interface appears, it indicates that the download has been completed.
1880
1881 [[image:image-20220620160723-8.png||_mstalt="430703"]]
1882
1883
1884 Finally,Disconnect 3.3v, Connect A8 and GND with Dupont wire for a while and then separate, exit reset mode
1885
1886
1887 == 6.8 Why can't I see the datalog information ==
1888
1889
1890 ~1. The time is not aligned, and the correct query command is not used.
1891
1892 2. Decoder error, did not parse the datalog data, the data was filtered.
1893
1894
1895 = 7. Order Info =
1896
1897
1898 Part Number: (% style="color:#4f81bd" %)** LHT65N-XX-YY**
1899
1900 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
1901
1902 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
1903 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
1904 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
1905 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
1906 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
1907 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**US915**(%%): LoRaWAN US915 band
1908 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
1909 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
1910
1911 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
1912
1913 * (% style="color:red" %)**E3**(%%): External Temperature Probe
1914
1915 = 8. Packing Info =
1916
1917
1918 **Package Includes**:
1919
1920 * LHT65N Temperature & Humidity Sensor x 1
1921 * Optional external sensor
1922
1923
1924 = 9. Reference material =
1925
1926
1927 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0]]
1928
1929 = 10. FCC Warning =
1930
1931
1932 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
1933
1934 (1) This device may not cause harmful interference;
1935
1936 (2) this device must accept any interference received, including interference that may cause undesired operation.