Version 212.1 by Bei Jinggeng on 2022/11/01 17:55
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9 (% _msthash="315238" _msttexthash="18964465" _mstvisible="3" %)**Table of Contents：**
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11 {{toc/}}
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15
16
17 = 1. Introduction =
18
19
20 == 1.1 What is LHT65N Temperature & Humidity Sensor ==
21
22
23 (((
24 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.**
25 )))
26
27 (((
28 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.
29 )))
30
31 (((
32 LHT65N has a built-in 2400mAh non-chargeable battery which can be used for up to 10 years*.
33 )))
34
35 (((
36 LHT65N is full compatible with LoRaWAN v1.0.3 Class A protocol, it can work with a standard LoRaWAN gateway.
37 )))
38
39 (((
40 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.
41 )))
42
43 (((
44 *The actual battery life depends on how often to send data, please see the battery analyzer chapter.
45 )))
46
47
48
49 == 1.2 Features ==
50
51
52 * Wall mountable
53 * LoRaWAN v1.0.3 Class A protocol
54 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915
55 * AT Commands to change parameters
56 * Remote configure parameters via LoRaWAN Downlink
57 * Firmware upgradeable via program port
58 * Built-in 2400mAh battery for up to 10 years of use.
59 * Built-in Temperature & Humidity sensor
60 * Optional External Sensors
61 * Tri-color LED to indicate working status
62 * Datalog feature (Max 3328 records)
63
64 == 1.3 Specification ==
65
66
67 (% style="color:#037691" %)**Built-in Temperature Sensor:**
68
69 * Resolution: 0.01 °C
70 * Accuracy Tolerance : Typ ±0.3 °C
71 * Long Term Drift: < 0.02 °C/yr
72 * Operating Range: -40 ~~ 85 °C
73
74 (% style="color:#037691" %)**Built-in Humidity Sensor:**
75
76 * Resolution: 0.04 %RH
77 * Accuracy Tolerance : Typ ±3 %RH
78 * Long Term Drift: < 0.02 °C/yr
79 * Operating Range: 0 ~~ 96 %RH
80
81 (% style="color:#037691" %)**External Temperature Sensor:**
82
83 * Resolution: 0.0625 °C
84 * ±0.5°C accuracy from -10°C to +85°C
85 * ±2°C accuracy from -55°C to +125°C
86 * Operating Range: -55 °C ~~ 125 °C
87
88 = 2. Connect LHT65N to IoT Server =
89
90
91 == 2.1 How does LHT65N work? ==
92
93
94 (((
95 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.
96 )))
97
98 (((
99 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.
100 )))
101
102
103
104 == 2.2 How to Activate LHT65N? ==
105
106
107 (((
108 The LHT65N has two working modes:
109 )))
110
111 * (((
112 (% 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.
113 )))
114 * (((
115 (% 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. 
116 )))
117
118 (((
119 The LHT65N is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
120 )))
121
122
123 [[image:image-20220515123819-1.png||_mstalt="430742" _mstvisible="3" height="379" width="317"]]
124
125 [[image:image-20220525110604-2.png||_mstalt="427531" _mstvisible="3"]]
126
127
128
129 == 2.3 Example to join LoRaWAN network ==
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132 (% _msthash="315240" _msttexthash="9205482" _mstvisible="1" class="wikigeneratedid" %)
133 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.
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136 (% _mstvisible="1" class="wikigeneratedid" %)
137 [[image:image-20220522232442-1.png||_mstalt="427830" _mstvisible="3" height="387" width="648"]]
138
139
140 (((
141 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:
142 )))
143
144
145
146 === 2.3.1 Step 1: Create Device n TTN ===
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148
149 (((
150 Create a device in TTN V3 with the OTAA keys from LHT65N.
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152
153 (((
154 Each LHT65N is shipped with a sticker with its device EUI, APP Key and APP EUI as below:
155 )))
156
157 [[image:image-20220617150003-1.jpeg]]
158
159 User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:
160
161 Add APP EUI in the application.
162
163
164 [[image:image-20220522232916-3.png||_mstalt="430495" _mstvisible="3"]]
165
166
167 [[image:image-20220522232932-4.png||_mstalt="430157" _mstvisible="3"]]
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170 [[image:image-20220522232954-5.png||_mstalt="431847" _mstvisible="3"]]
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173
174 (% style="color:red" %)**Note: LHT65N use same payload as LHT65.**
175
176
177 [[image:image-20220522233026-6.png||_mstalt="429403" _mstvisible="3"]]
178
179
180 Input APP EUI,  APP KEY and DEV EUI:
181
182
183 [[image:image-20220522233118-7.png||_mstalt="430430" _mstvisible="3"]]
184
185
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" _mstvisible="3" height="219" width="722"]]
196
197
198
199 == 2.4 Uplink Payload   ( Fport~=2) ==
200
201
202 (((
203 The uplink payload includes totally 11 bytes. Uplink packets use FPORT=2 and (% _mstvisible="3" style="color:#4f81bd" %)**every 20 minutes**(%%) send one uplink by default.
204 )))
205
206 (((
207 After each uplink, the (% _mstvisible="3" style="color:blue" %)**BLUE LED**(%%) will blink once.
208 )))
209
210 (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:390px" %)
211 |=(% style="width: 60px;" %)(((
212 **Size(bytes)**
213 )))|=(% style="width: 30px;" %)(((
214 **2**
215 )))|=(% style="width: 100px;" %)(((
216 **2**
217 )))|=(% style="width: 100px;" %)(((
218 **2**
219 )))|=(% style="width: 50px;" %)(((
220 **1**
221 )))|=(% style="width: 50px;" %)(((
222 **4**
223 )))
224 |(% style="width:97px" %)(((
225 **Value**
226 )))|(% style="width:39px" %)(((
227 [[BAT>>||anchor="H2.4.2BAT-BatteryInfo"]]
228 )))|(% style="width:100px" %)(((
229 (((
230 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
231 )))
232 )))|(% style="width:77px" %)(((
233 (((
234 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
235 )))
236 )))|(% style="width:47px" %)(((
237 [[Ext>>||anchor="H2.4.5Ext23"]] #
238 )))|(% style="width:51px" %)(((
239 [[Ext value>>||anchor="H2.4.6Extvalue"]]
240 )))
241
242 * The First 6 bytes: has fix meanings for every LHT65N.
243 * The 7th byte (EXT #): defines the external sensor model.
244 * The 8(% _msthash="734578" _msttexthash="21372" _mstvisible="4" %)^^th^^(%%) ~~ 11(% _msthash="734579" _msttexthash="21372" _mstvisible="4" %)^^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.)
245
246 === 2.4.1 Decoder in TTN V3 ===
247
248
249 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.
250
251 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]]
252
253
254 [[image:image-20220522234118-10.png||_mstalt="451464" _mstvisible="3" height="353" width="729"]]
255
256
257
258 === 2.4.2 BAT-Battery Info ===
259
260
261 These two bytes of BAT include the battery state and the actually voltage
262
263 [[image:image-20220523152839-18.png||_mstalt="457613" _mstvisible="3"]]
264
265
266 [[image:image-20220522235639-1.png||_mstalt="431392" _mstvisible="3" height="139" width="727"]]
267
268
269 Check the battery voltage for LHT65N.
270
271 * BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
272 * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
273
274 === 2.4.3 Built-in Temperature ===
275
276
277 [[image:image-20220522235639-2.png||_mstalt="431756" _mstvisible="3" height="138" width="722"]]
278
279 * Temperature:  0x0ABB/100=27.47℃
280
281 [[image:image-20220522235639-3.png||_mstalt="432120" _mstvisible="3"]]
282
283 * Temperature:  (0xF5C6-65536)/100=-26.18℃
284
285 === 2.4.4 Built-in Humidity ===
286
287
288 [[image:image-20220522235639-4.png||_mstalt="432484" _mstvisible="3" height="138" width="722"]]
289
290 * Humidity:    0x025C/10=60.4%
291
292 === 2.4.5 Ext # ===
293
294
295 Bytes for External Sensor:
296
297 [[image:image-20220523152822-17.png||_mstalt="454545" _mstvisible="3"]]
298
299
300
301 === 2.4.6 Ext value ===
302
303
304 ==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
305
306
307 [[image:image-20220522235639-5.png||_mstalt="432848" _mstvisible="3"]]
308
309
310 * DS18B20 temp=0x0ADD/100=27.81℃
311
312 The last 2 bytes of data are meaningless
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314
315
316 [[image:image-20220522235639-6.png||_mstalt="433212" _mstvisible="3"]]
317
318
319 * External temperature= (0xF54F-65536)/100=-27.37℃
320
321 The last 2 bytes of data are meaningless
322
323 If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
324
325
326
327 ==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
328
329
330 (((
331 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:
332 )))
333
334 (((
335
336 )))
337
338 (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:480px" %)
339 |=(% style="width: 50px;" %)(((
340 **Size(bytes)**
341 )))|=(% style="width: 70px;" %)(((
342 **2**
343 )))|=(% style="width: 120px;" %)(((
344 **2**
345 )))|=(% style="width: 120px;" %)(((
346 **2**
347 )))|=(% style="width: 50px;" %)(((
348 **1**
349 )))|=(% style="width: 70px;" %)(((
350 **4**
351 )))
352 |(% style="width:110px" %)(((
353 **Value**
354 )))|(% style="width:71px" %)(((
355 [[External temperature>>||anchor="H4.2SetExternalSensorMode"]]
356 )))|(% style="width:99px" %)(((
357 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
358 )))|(% style="width:132px" %)(((
359 BAT Status & [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
360 )))|(% style="width:54px" %)(((
361 Status & Ext
362 )))|(% style="width:64px" %)(((
363 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp"]]
364 )))
365
366 * **Battery status & Built-in Humidity**
367
368 (% _mstvisible="1" border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:461px" %)
369 |=(% style="width: 67px;" %)Bit(bit)|=(% style="width: 256px;" %)[15:14]|=(% style="width: 132px;" %)[11:0]
370 |(% style="width:67px" %)Value|(% style="width:256px" %)(((
371 BAT Status
372 00(b): Ultra Low ( BAT <= 2.50v)
373 01(b): Low  (2.50v <=BAT <= 2.55v)
374 10(b): OK   (2.55v <= BAT <=2.65v)
375 11(b): Good   (BAT >= 2.65v)
376 )))|(% style="width:132px" %)(((
377 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
378 )))
379
380 * **Status & Ext Byte**
381
382 (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:500px" %)
383 |=(% scope="row" style="width: 60px;" %)**Bits**|(% style="width:90px" %)**7**|(% style="width:100px" %)**6**|(% style="width:90px" %)**5**|(% style="width:100px" %)**4**|(% style="width:60px" %)**[3:0]**
384 |=(% 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)
385
386 * (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
387 * (% 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.
388 * (% 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)
389
390 ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
391
392
393 In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
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395 be used to power the external ADC sensor; user can control the power on time for this
396
397 (% style="color:blue" %)**sensor by setting:**
398
399 **AT+EXT=6,timeout**  (% _msthash="506085" _msttexthash="8782189" _mstvisible="3" style="color:red" %)**Time to power this sensor, from 0 ~~ 65535ms**
400
401 **For example:**
402
403 AT+EXT=6,1000 will power this sensor for 1000ms before sampling the ADC value.
404
405
406 Or use **downlink command A2** to set the same.
407
408 The measuring range of the node is only about 0.1V to 1.1V The voltage resolution is about 0.24mv.
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410 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.
411
412 [[image:image-20220628150112-1.png||height="241" width="285"]]
413
414
415 When ADC_IN1 pin is connected to GND or suspended, ADC value is 0
416
417 [[image:image-20220628150714-4.png]]
418
419
420 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.
421
422
423 1) The minimum range is about 0.1V. Each chip has internal calibration, so this value is close to 0.1V
424
425 [[image:image-20220628151005-5.png]]
426
427
428 2) The maximum range is about 1.1V. Each chip has internal calibration, so this value is close to 1.1v
429
430 [[image:image-20220628151056-6.png]]
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432
433 3) Within range
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435 [[image:image-20220628151143-7.png]]
436
437
438
439 ==== 2.4.6.4 Ext~=2 TMP117 Sensor （Since Firmware v1.3） ====
440
441
442 [[image:image-20220927095645-1.png||height="534" width="460"]]
443
444
445 (% style="color:blue" %)**Ext=2,Temperature Sensor(TMP117)：**
446
447 [[image:image-20220906102307-7.png]]
448
449
450 (% style="color:blue" %)**Interrupt Mode and Counting Mode:**
451
452 The external cable NE2 can be use for MOD4 and MOD8
453
454
455
456 ==== 2.4.6.5 Ext~=4 Interrupt Mode （Since Firmware v1.3） ====
457
458
459 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will send an uplink when there is a trigger.**
460
461
462 (% style="color:blue" %)**Interrupt Mode can be used to connect to external interrupt sensors such as:**
463
464 (% style="color:#037691" %)**Case 1: Door Sensor.** (%%)3.3v Out for such sensor is just to detect Open/Close.
465
466 In Open State, the power consumption is the same as if there is no probe
467
468 In Close state, the power consumption will be 3uA higher than normal.
469
470 [[image:image-20220906100852-1.png||height="205" width="377"]]
471
472
473 Ext=4,Interrupt Sensor：
474
475 (% border="1.5" cellpadding="4" cellspacing="4" style="background-color:#ffffcc; color:green; height:6px; width:478px" %)
476 |(% style="width:101px" %)(((
477 AT+EXT=4,1
478 )))|(% style="width:373px" %)(((
479 Sent uplink packet in both rising and falling interrupt
480 )))
481 |(% style="width:101px" %)(((
482 AT+EXT=4,2
483 )))|(% style="width:373px" %)(((
484 Sent uplink packet only in falling interrupt
485 )))
486 |(% style="width:101px" %)(((
487 AT+EXT=4,3
488 )))|(% style="width:373px" %)(((
489 Sent uplink packet only in rising interrupt
490 )))
491
492 Trigger by falling edge:
493
494 [[image:image-20220906101145-2.png]]
495
496
497 Trigger by raising edge：
498
499 [[image:image-20220906101145-3.png]]
500
501
502
503
504 ==== 2.4.6.6 Ext~=8 Counting Mode（Since Firmware v1.3） ====
505
506
507 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will count for every interrupt and uplink periodically.**
508
509
510 (% 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.
511
512 [[image:image-20220906101320-4.png||height="366" width="698"]]
513
514
515 (% 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
516
517 [[image:image-20220906101320-5.png||height="353" width="696"]]
518
519
520 Ext=8, Counting Sensor ( 4 bytes)：
521
522 (% border="2" cellpadding="4" cellspacing="4" style="background-color:#ffffcc; color:green; height:6px; width:381px" %)
523 |(% style="width:138px" %)(((
524 AT+EXT=8,0
525 )))|(% style="width:240px" %)(((
526 Count at falling interrupt
527 )))
528 |(% style="width:138px" %)(((
529 AT+EXT=8,1
530 )))|(% style="width:240px" %)(((
531 Count at rising interrupt
532 )))
533 |(% style="width:138px" %)(((
534 AT+SETCNT=60
535 )))|(% style="width:240px" %)(((
536 Sent current count to 60
537 )))
538
539 [[image:image-20220906101320-6.png]]
540
541
542 (% style="color:blue" %)**A2 downlink Command：**
543
544 A2 02:  Same as AT+EXT=2 (AT+EXT= second byte)
545
546 A2 06 01 F4:  Same as AT+EXT=6,500 (AT+EXT= second byte, third and fourth bytes)
547
548 A2 04 02:  Same as AT+EXT=4,2 (AT+EXT= second byte, third byte)
549
550 A2 08 01 00:  Same as AT+EXT=8,0 (AT+EXT= second byte, fourth byte)
551
552 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)
553
554
555
556 == 2.5 Show data on Datacake ==
557
558
559 (((
560 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:
561 )))
562
563 (((
564
565 )))
566
567 (((
568 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the LoRaWAN network.
569 )))
570
571 (((
572 (% 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.
573 )))
574
575 (((
576
577 )))
578
579 (((
580 Add Datacake:
581 )))
582
583
584 [[image:image-20220523000825-7.png||_mstalt="429884" _mstvisible="3" height="262" width="583"]]
585
586
587
588 Select default key as Access Key:
589
590
591 [[image:image-20220523000825-8.png||_mstalt="430248" _mstvisible="3" height="453" width="406"]]
592
593
594 In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/||_mstvisible="2"]]) , add LHT65 device.
595
596
597 [[image:image-20220523000825-9.png||_mstalt="430612" _mstvisible="3" height="366" width="392"]]
598
599
600 [[image:image-20220523000825-10.png||_mstalt="450619" _mstvisible="3" height="413" width="728"]]
601
602
603
604 == 2.6 Datalog Feature ==
605
606
607 (((
608 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.
609 )))
610
611
612
613 === 2.6.1 Ways to get datalog via LoRaWAN ===
614
615
616 There are two methods:
617
618 (% style="color:blue" %)**Method 1:** (%%)IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specified time range.
619
620
621 (% 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.
622
623 (% style="color:red" %)**Note for method 2:**
624
625 * a) LHT65N will do an ACK check for data records sending to make sure every data arrive server.
626 * 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.
627
628 Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
629
630
631 [[image:image-20220703111700-2.png||height="381" width="1119"]]
632
633
634
635 === 2.6.2 Unix TimeStamp ===
636
637
638 LHT65N uses Unix TimeStamp format based on
639
640
641 [[image:image-20220523001219-11.png||_mstalt="450450" _mstvisible="3" height="97" width="627"]]
642
643
644
645 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/||_mstvisible="3"]] :
646
647 Below is the converter example
648
649 [[image:image-20220523001219-12.png||_mstalt="450827" _mstvisible="3" height="298" width="720"]]
650
651 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
652
653
654
655 === 2.6.3 Set Device Time ===
656
657
658 (((
659 (% style="color:blue" %)**There are two ways to set device's time:**
660 )))
661
662 (((
663 **1.  Through LoRaWAN MAC Command (Default settings)**
664 )))
665
666 (((
667 User need to set SYNCMOD=1 to enable sync time via MAC command.
668 )))
669
670 (((
671 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).
672 )))
673
674 (((
675 (% 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.**
676 )))
677
678 (((
679
680 )))
681
682 (((
683 **2. Manually Set Time**
684 )))
685
686 (((
687 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
688 )))
689
690
691
692 === 2.6.4 Poll sensor value ===
693
694
695 User can poll sensor value based on timestamps from the server. Below is the downlink command.
696
697 [[image:image-20220523152302-15.png||_mstalt="451581" _mstvisible="3"]]
698
699
700 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.
701
702 For example, downlink command **31 5FC5F350 5FC6 0160 05**
703
704 Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00’s data
705
706 Uplink Internal =5s，means LHT65N will send one packet every 5s. range 5~~255s.
707
708
709
710 === 2.6.5 Datalog Uplink payload ===
711
712
713 The Datalog poll reply uplink will use below payload format.
714
715 **Retrieval data payload:**
716
717 (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:480px" %)
718 |=(% style="width: 60px;" %)(((
719 **Size(bytes)**
720 )))|=(% style="width: 90px;" %)**2**|=(% style="width: 90px;" %)**2**|=(% style="width: 70px;" %)**2**|=(% style="width: 100px;" %)**1**|=(% style="width: 70px;" %)**4**
721 |(% 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"]]
722
723 **Poll message flag & Ext:**
724
725 [[image:image-20221006192726-1.png||height="112" width="754"]]
726
727 (% 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)
728
729 (% style="color:blue" %)**Poll Message Flag**(%%): 1: This message is a poll message reply.
730
731 * Poll Message Flag is set to 1.
732
733 * Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
734
735 For example, in US915 band, the max payload for different DR is:
736
737 (% style="color:blue" %)**a) DR0:** (%%)max is 11 bytes so one entry of data
738
739 (% style="color:blue" %)**b) DR1:**(%%) max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
740
741 (% style="color:blue" %)**c) DR2:**(%%) total payload includes 11 entries of data
742
743 (% style="color:blue" %)**d) DR3: **(%%)total payload includes 22 entries of data.
744
745 If devise doesn't have any data in the polling time. Device will uplink 11 bytes of 0   
746
747
748 **Example:**
749
750 If LHT65N has below data inside Flash:
751
752 [[image:image-20220523144455-1.png||_mstalt="430040" _mstvisible="3" height="335" width="735"]]
753
754
755 If user sends below downlink command: (% style="background-color:yellow" %)3160065F9760066DA705
756
757 Where : Start time: 60065F97 = time 21/1/19 04:27:03
758
759 Stop time: 60066DA7= time 21/1/19 05:27:03
760
761
762 **LHT65N will uplink this payload.**
763
764 [[image:image-20220523001219-13.png||_mstalt="451204" _mstvisible="3" height="421" style="text-align:left" width="727"]]
765
766
767 __**7FFF089801464160065F97**__ **__7FFF__ __088E__ __014B__ __41__ __60066009__** 7FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
768
769 Where the first 11 bytes is for the first entry:
770
771 7FFF089801464160065F97
772
773 Ext sensor data=0x7FFF/100=327.67
774
775 Temp=0x088E/100=22.00
776
777 Hum=0x014B/10=32.6
778
779 poll message flag & Ext=0x41,means reply data,Ext=1
780
781 Unix time is 0x60066009=1611030423s=21/1/19 04:27:03
782
783
784
785 == 2.7 Alarm Mode ==
786
787
788 (((
789 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.
790 )))
791
792 (((
793 (% style="color:red" %)**Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.**
794
795
796
797 === 2.7.1 ALARM MODE ( Since v1.3.1 firmware) ===
798
799 **Internal GXHT30 temperature alarm**
800
801 (((
802 (% class="box infomessage" %)
803 (((
804 **AT+WMOD=3**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)
805
806 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
807
808 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
809
810 **AT+ARTEMP=？ **:  Gets the alarm range of the internal temperature sensor(% _mstvisible="3" style="display:none" %)
811
812 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
813
814 **AT+LEDALARM=1** :       Enable LED visual Alarm.
815 )))
816 )))
817
818 (% style="color:#4f81bd" %)**Downlink Command:**
819
820 AT+WMOD=1:  A501  ,  AT+WMOD=0 :  A600
821
822 AT+CITEMP=1 : A60001
823
824 AT+ARTEMP=1,60  :  A70001003C
825
826 AT+ARTEMP=-16,60 :  A7FFF0003C
827
828 AT+LEDALARM=1  :  3601
829
830 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
831
832 Total bytes: 8 bytes
833
834 **Example:**AA0100010001003C
835
836 WMOD=01
837
838 CITEMP=0001
839
840 TEMPlow=0001
841
842 TEMPhigh=003C
843
844
845 **DS18B20 and TMP117 Threshold Alarm**
846
847 AT+WMOD=1,60,-10,20
848
849 (% style="color:#4f81bd" %)**Downlink Command:**
850
851 **Example:**A5013CFC180014
852
853 MOD=01
854
855 CITEMP=3C(S)
856
857 TEMPlow=FC18
858
859 TEMPhigh=0014
860
861
862 **Fluctuation alarm for DS18B20 and TMP117**
863
864 AT+WMOD=2,60,5
865
866 (% style="color:#4f81bd" %)**Downlink Command:**
867
868 **Example:**A5023C05
869
870 MOD=02
871
872 CITEMP=3C(S)
873
874 temperature fluctuation=05
875
876
877 **Collect multiple times and send once**
878
879 AT+WMOD=3,1,60,20,-16,32,1  ~/~/Mode 3, the collection interval is 60s, the total number of collection is 20 times, and the data of these 20 times will be sent to the 20th time, with a maximum of 60 groups, the normal working temperature range is -10 to 32°C, 1 is to open the temperature alarm, 0 is to close the temperature alarm, and the temperature is turned on. After the alarm, if the temperature collected at the current time exceeds the normal working temperature, a data will be sent immediately.
880
881 (% style="color:#4f81bd" %)**Downlink Command:**
882
883 **Example:**A50301003C14FFF0002001
884
885 MOD=03
886
887 EXT=01
888
889 CITEMP=003C(S)
890
891 Total number of acquisitions=14
892
893 TEMPlow=FFF0
894
895 TEMPhigh=0020
896
897 ARTEMP=01
898
899
900 )))
901
902 (((
903 === 2.7.2 ALARM MODE ( Before v1.3.1 firmware) ===
904
905
906 )))
907
908 (% _mstvisible="1" class="box infomessage" %)
909 (((
910 (((
911 **AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)
912 )))
913
914 (((
915 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
916 )))
917
918 (((
919 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
920 )))
921
922 (((
923 **AT+ARTEMP=？ **:  Gets the alarm range of the internal temperature sensor(% _mstvisible="3" style="display:none" %)
924 )))
925
926 (((
927 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
928 )))
929 )))
930
931 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
932
933 Total bytes: 8 bytes
934
935 **Example:**AA0100010001003C
936
937 WMOD=01
938
939 CITEMP=0001
940
941 TEMPlow=0001
942
943 TEMPhigh=003C
944
945
946
947 == 2.8 LED Indicator ==
948
949
950 The LHT65 has a triple color LED which for easy showing different stage .
951
952 While user press ACT button, the LED will work as per LED status with ACT button.
953
954 In a normal working state:
955
956 * For each uplink, the BLUE LED or RED LED will blink once.
957 BLUE LED when external sensor is connected.
958 * RED LED when external sensor is not connected
959 * For each success downlink, the PURPLE LED will blink once
960
961 == 2.9 installation ==
962
963
964 (% _mstvisible="1" %)
965 [[image:image-20220516231650-1.png||_mstalt="428597" _mstvisible="3" height="436" width="428"]]
966
967
968
969 = 3. Sensors and Accessories =
970
971
972 == 3.1 E2 Extension Cable ==
973
974
975 [[image:image-20220619092222-1.png||height="182" width="188"]][[image:image-20220619092313-2.png||height="182" width="173"]]
976
977
978 **1m long breakout cable for LHT65N. Features:**
979
980 * (((
981 Use for AT Command， works for both LHT52/LHT65N
982 )))
983 * (((
984 Update firmware for LHT65N, works for both LHT52/LHT65N
985 )))
986 * (((
987 Supports ADC mode to monitor external ADC
988 )))
989 * (((
990 Supports Interrupt mode
991 )))
992 * (((
993 Exposed All pins from the LHT65N Type-C connector.
994
995
996
997 )))
998
999 [[image:image-20220619092421-3.png||height="371" width="529"]]
1000
1001
1002
1003
1004 == 3.2 E3 Temperature Probe ==
1005
1006
1007 [[image:image-20220515080154-4.png||_mstalt="434681" _mstvisible="3" alt="photo-20220515080154-4.png" height="182" width="161"]] [[image:image-20220515080330-5.png||_mstalt="428792" _mstvisible="3" height="201" width="195"]]
1008
1009
1010 Temperature sensor with 2 meters cable long
1011
1012 * Resolution: 0.0625 °C
1013 * ±0.5°C accuracy from -10°C to +85°C
1014 * ±2°C accuracy from -55°C to +125°C
1015 * Operating Range: -40 ~~ 125 °C
1016 * Working voltage 2.35v ~~ 5v
1017
1018 = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1019
1020
1021 (((
1022 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
1023 )))
1024
1025 * (((
1026 AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
1027 )))
1028
1029 * (((
1030 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
1031 )))
1032
1033 (((
1034 There are two kinds of commands to configure LHT65N, they are:
1035 )))
1036
1037 * (((
1038 (% style="color:#4f81bd" %)**General Commands**.
1039 )))
1040
1041 (((
1042 These commands are to configure:
1043 )))
1044
1045 1. (((
1046 General system settings like: uplink interval.
1047 )))
1048 1. (((
1049 LoRaWAN protocol & radio-related commands.
1050 )))
1051
1052 (((
1053 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]]
1054 )))
1055
1056 * (((
1057 (% style="color:#4f81bd" %)**Commands special design for LHT65N**
1058 )))
1059
1060 (((
1061 These commands are only valid for LHT65N, as below:
1062 )))
1063
1064
1065
1066 == 4.1 Set Transmit Interval Time ==
1067
1068
1069 Feature: Change LoRaWAN End Node Transmit Interval.
1070
1071
1072 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
1073
1074 [[image:image-20220523150701-2.png||_mstalt="427453" _mstvisible="3"]]
1075
1076
1077 (% style="color:#4f81bd" %)**Downlink Command: 0x01**
1078
1079 Format: Command Code (0x01) followed by 3 bytes time value.
1080
1081 If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.
1082
1083 * **Example 1**: Downlink Payload: 0100001E  ~/~/ Set Transmit Interval (TDC) = 30 seconds
1084
1085 * **Example 2**: Downlink Payload: 0100003C  ~/~/ Set Transmit Interval (TDC) = 60 seconds
1086
1087 == 4.2 Set External Sensor Mode ==
1088
1089
1090 Feature: Change External Sensor Mode.
1091
1092
1093 (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1094
1095 [[image:image-20220523150759-3.png||_mstalt="432146" _mstvisible="3"]]
1096
1097
1098 (% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1099
1100 Total bytes: 2 ~~ 5 bytes
1101
1102 **Example:**
1103
1104 * 0xA201: Set external sensor type to E1
1105
1106 * 0xA209: Same as AT+EXT=9
1107
1108 * 0xA20702003c: Same as AT+SETCNT=60
1109
1110 == 4.3 Enable/Disable uplink Temperature probe ID ==
1111
1112
1113 (((
1114 Feature: If PID is enabled, device will send the temperature probe ID on:
1115 )))
1116
1117 * (((
1118 First Packet after OTAA Join
1119 )))
1120 * (((
1121 Every 24 hours since the first packet.
1122 )))
1123
1124 (((
1125 PID is default set to disable (0)
1126
1127
1128 )))
1129
1130 (% style="color:#4f81bd" %)**AT Command:**
1131
1132 [[image:image-20220523150928-4.png||_mstalt="431821" _mstvisible="3"]]
1133
1134
1135 (% style="color:#4f81bd" %)**Downlink Command:**
1136
1137 * **0xA800**  **~-~->** AT+PID=0
1138 * **0xA801**     **~-~->** AT+PID=1
1139
1140 == 4.4 Set Password ==
1141
1142
1143 Feature: Set device password, max 9 digits
1144
1145
1146 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1147
1148 [[image:image-20220523151052-5.png||_mstalt="428623" _mstvisible="3"]]
1149
1150
1151 (% style="color:#4f81bd" %)**Downlink Command:**
1152
1153 No downlink command for this feature.
1154
1155
1156
1157 == 4.5 Quit AT Command ==
1158
1159
1160 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1161
1162
1163 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1164
1165 [[image:image-20220523151132-6.png||_mstalt="428649" _mstvisible="3"]]
1166
1167
1168 (% style="color:#4f81bd" %)**Downlink Command:**
1169
1170 No downlink command for this feature.
1171
1172
1173
1174 == 4.6 Set to sleep mode ==
1175
1176
1177 Feature: Set device to sleep mode
1178
1179 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1180 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1181
1182 (% _msthash="315251" _msttexthash="289783" style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1183
1184 [[image:image-20220523151218-7.png||_mstalt="430703" _mstvisible="3"]]
1185
1186
1187 (% _msthash="315252" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1188
1189 * There is no downlink command to set to Sleep mode.
1190
1191 == 4.7 Set system time ==
1192
1193
1194 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1195
1196
1197 (% _msthash="315253" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1198
1199 [[image:image-20220523151253-8.png||_mstalt="430677" _mstvisible="3"]]
1200
1201
1202 (% _msthash="315254" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1203
1204 0x306007806000  ~/~/  Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1205
1206
1207
1208 == 4.8 Set Time Sync Mode ==
1209
1210
1211 (((
1212 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1213 )))
1214
1215 (((
1216 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.
1217
1218
1219 )))
1220
1221 (% _msthash="506058" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1222
1223 [[image:image-20220523151336-9.png||_mstalt="431717" _mstvisible="3"]]
1224
1225
1226 (% style="color:#4f81bd" %)**Downlink Command:**
1227
1228 0x28 01  ~/~/  Same As AT+SYNCMOD=1
1229 0x28 00  ~/~/  Same As AT+SYNCMOD=0
1230
1231
1232
1233 == 4.9 Set Time Sync Interval ==
1234
1235
1236 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1237
1238
1239 (% _msthash="315256" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1240
1241 [[image:image-20220523151411-10.png||_mstalt="449696" _mstvisible="3"]]
1242
1243
1244 (% _msthash="315257" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1245
1246 **0x29 0A**  ~/~/ Same as AT+SYNCTDC=0x0A
1247
1248
1249
1250 == 4.10 Print data entries base on page. ==
1251
1252
1253 Feature: Print the sector data from start page to stop page (max is 416 pages).
1254
1255
1256 (% _msthash="315258" _msttexthash="264953" style="color:#4f81bd" %)**AT Command: AT+PDTA**
1257
1258 [[image:image-20220523151450-11.png||_mstalt="451035" _mstvisible="3"]]
1259
1260
1261 (% _msthash="315259" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1262
1263 No downlink commands for feature
1264
1265
1266
1267 == 4.11 Print last few data entries. ==
1268
1269
1270 Feature: Print the last few data entries
1271
1272
1273 (% _msthash="315260" _msttexthash="288522" style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1274
1275 [[image:image-20220523151524-12.png||_mstalt="452101" _mstvisible="3"]]
1276
1277
1278 (% _msthash="315261" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1279
1280 No downlink commands for feature
1281
1282
1283
1284 == 4.12 Clear Flash Record ==
1285
1286
1287 Feature: Clear flash storage for data log feature.
1288
1289
1290 (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1291
1292 [[image:image-20220523151556-13.png||_mstalt="454129" _mstvisible="3"]]
1293
1294
1295 (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1296
1297 * Example: 0xA301  ~/~/  Same as AT+CLRDTA
1298
1299 == 4.13 Auto Send None-ACK messages ==
1300
1301
1302 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.
1303
1304
1305 (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1306
1307 The default factory setting is 0
1308
1309 (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:367px" %)
1310 |=(% style="width: 158px;" %)**Command Example**|=(% style="width: 118px;" %)**Function**|=(% style="width: 87px;" %)**Response**
1311 |(% style="width:158px" %)AT+PNACKMD=1|(% style="width:118px" %)Poll None-ACK message|(% style="width:87px" %)OK
1312
1313 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1314
1315 * Example: 0x3401  ~/~/  Same as AT+PNACKMD=1
1316
1317 == 4.14 Modified ATWOOD command for external sensor TMP117 or DS18B20 temperature alarm ==
1318
1319
1320 Feature: Set internal and external temperature sensor alarms.
1321
1322 (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:500px" %)
1323 |=(% style="width: 250px;" %)**Command Example**|=(% style="width: 200px;" %)**Function**|=(% style="width: 50px;" %)**Response**
1324 |(% style="width:268px" %)AT+WMOD=parameter1,parameter2,parameter3,parameter4|(% style="width:255px" %)Set internal and external temperature sensor alarms|(% style="width:181px" %)OK
1325
1326 (% style="color:#037691" %)**AT+WMOD=parameter1,parameter2,parameter3,parameter4**
1327
1328 (% style="color:#037691" %)**Parameter 1**(%%):  Alarm mode:
1329
1330 0): Cancel
1331
1332 1): Threshold alarm
1333
1334 2): Fluctuation alarm
1335
1336
1337 (% style="color:#037691" %)** Parameter 2**(%%):  Sampling time. Unit: seconds, up to 255 seconds.
1338
1339 (% 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.**
1340
1341
1342 (% style="color:#037691" %) **Parameter 3 and parameter 4:**
1343
1344 1):  If Alarm Mode is set to 1: Parameter 3 and parameter 4 are valid, as before, they represent low temperature and high temperature.
1345
1346 Such as AT+WMOD=1,60,45,105, it means high and low temperature alarm.
1347
1348
1349 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.
1350
1351 Such as AT+WMOD=2,10,2,it means that it is a fluctuation alarm.
1352
1353 If the difference between the current collected temperature and the last Uplin is ±2 degrees, the alarm will be issued.
1354
1355
1356 (% style="color:#4f81bd" %)**Downlink Command: 0xA5**
1357
1358 0xA5 00 ~-~- AT+WMOD=0.
1359
1360 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 )
1361
1362 0xA5 02 0A 02 ~-~- AT+WMOD=2,10,2  (AT+WMOD = second byte, third byte, fourth byte)
1363
1364 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.
1365
1366
1367
1368 = 5. Battery & How to replace =
1369
1370
1371 == 5.1 Battery Type ==
1372
1373
1374 (((
1375 (((
1376 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.
1377 )))
1378 )))
1379
1380 (((
1381
1382 )))
1383
1384 (((
1385 (((
1386 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1387 [[image:image-20220515075034-1.png||_mstalt="428961" _mstvisible="4" height="208" width="644"]]
1388 )))
1389 )))
1390
1391 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1392
1393
1394
1395 == 5.2 Replace Battery ==
1396
1397
1398 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.
1399
1400 [[image:image-20220515075440-2.png||_mstalt="429546" _mstvisible="3" height="338" width="272"]][[image:image-20220515075625-3.png||_mstalt="431574" _mstvisible="3" height="193" width="257"]]
1401
1402
1403
1404 == 5.3 Battery Life Analyze ==
1405
1406
1407 (((
1408 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:
1409 [[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]]
1410 )))
1411
1412 (((
1413
1414 )))
1415
1416 (((
1417 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]]
1418 )))
1419
1420
1421
1422 = 6. FAQ =
1423
1424
1425 == 6.1 How to use AT Command? ==
1426
1427
1428 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.
1429
1430 [[image:image-20220530085651-1.png||_mstalt="429949"]]
1431
1432
1433 (% _msthash="506061" _msttexthash="170755" %)**Connection:**
1434
1435 * (% style="background-color:yellow" %)**USB to TTL GND <~-~->GND**
1436 * (% style="background-color:yellow" %)**USB to TTL RXD <~-~-> D+**
1437 * (% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1438
1439 (((
1440 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.
1441 )))
1442
1443
1444 Input password and ATZ to activate LHT65N,As shown below:
1445
1446 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1447
1448
1449 (% _msthash="506066" _msttexthash="544869" %)
1450 AT Command List is as below:
1451
1452 (% _msthash="506067" _msttexthash="361920" %)
1453 AT+<CMD>? :  Help on <CMD>
1454
1455 (% _msthash="506068" _msttexthash="243061" %)
1456 AT+<CMD> :  Run <CMD>
1457
1458 (% _msthash="506069" _msttexthash="704197" %)
1459 AT+<CMD>=<value> :  Set the value
1460
1461 (% _msthash="506070" _msttexthash="455676" %)
1462 AT+<CMD>=? :  Get the value
1463
1464 (% _msthash="506071" _msttexthash="670553" %)
1465 AT+DEBUG:  Set more info output
1466
1467 (% _msthash="506072" _msttexthash="485888" %)
1468 ATZ:  Trig a reset of the MCU
1469
1470 (% _msthash="506073" _msttexthash="2068872" %)
1471 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1472
1473 (% _msthash="506074" _msttexthash="689169" %)
1474 AT+DEUI:  Get or Set the Device EUI
1475
1476 (% _msthash="506075" _msttexthash="960414" %)
1477 AT+DADDR:  Get or Set the Device Address
1478
1479 (% _msthash="506076" _msttexthash="1079897" %)
1480 AT+APPKEY:  Get or Set the Application Key
1481
1482 (% _msthash="506077" _msttexthash="1326143" %)
1483 AT+NWKSKEY:  Get or Set the Network Session Key
1484
1485 (% _msthash="506078" _msttexthash="1573000" %)
1486 AT+APPSKEY:  Get or Set the Application Session Key
1487
1488 (% _msthash="506079" _msttexthash="1041729" %)
1489 AT+APPEUI:  Get or Set the Application EUI
1490
1491 (% _msthash="506080" _msttexthash="2104206" %)
1492 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1493
1494 (% _msthash="506081" _msttexthash="3369288" %)
1495 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1496
1497 (% _msthash="506082" _msttexthash="1894529" %)
1498 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1499
1500 (% _msthash="506083" _msttexthash="3864172" %)
1501 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1502
1503 (% _msthash="506084" _msttexthash="1712204" %)
1504 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1505
1506 (% _msthash="506085" _msttexthash="1281202" %)
1507 AT+RX2FQ:  Get or Set the Rx2 window frequency
1508
1509 (% _msthash="506086" _msttexthash="2796781" %)
1510 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1511
1512 (% _msthash="506087" _msttexthash="3285165" %)
1513 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1514
1515 (% _msthash="506088" _msttexthash="3286179" %)
1516 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1517
1518 (% _msthash="506089" _msttexthash="4703803" %)
1519 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1520
1521 (% _msthash="506090" _msttexthash="4704999" %)
1522 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1523
1524 (% _msthash="506091" _msttexthash="1528683" %)
1525 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1526
1527 (% _msthash="506092" _msttexthash="757185" %)
1528 AT+NWKID:  Get or Set the Network ID
1529
1530 (% _msthash="506093" _msttexthash="1156597" %)
1531 AT+FCU:  Get or Set the Frame Counter Uplink
1532
1533 (% _msthash="506094" _msttexthash="1273987" %)
1534 AT+FCD:  Get or Set the Frame Counter Downlink
1535
1536 (% _msthash="506095" _msttexthash="859222" %)
1537 AT+CLASS:  Get or Set the Device Class
1538
1539 (% _msthash="506096" _msttexthash="384852" %)
1540 AT+JOIN:  Join network
1541
1542 (% _msthash="506097" _msttexthash="548626" %)
1543 AT+NJS:  Get the join status
1544
1545 (% _msthash="506098" _msttexthash="2546206" %)
1546 AT+SENDB:  Send hexadecimal data along with the application port
1547
1548 (% _msthash="506099" _msttexthash="1932307" %)
1549 AT+SEND:  Send text data along with the application port
1550
1551 (% _msthash="506100" _msttexthash="3560557" %)
1552 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
1553
1554 (% _msthash="506101" _msttexthash="1429701" %)
1555 AT+RECV:  Print last received data in raw format
1556
1557 (% _msthash="506102" _msttexthash="1735981" %)
1558 AT+VER:  Get current image version and Frequency Band
1559
1560 (% _msthash="506103" _msttexthash="1189474" %)
1561 AT+CFM:  Get or Set the confirmation mode (0-1)
1562
1563 (% _msthash="506104" _msttexthash="1718210" %)
1564 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1565
1566 (% _msthash="506105" _msttexthash="1339403" %)
1567 AT+SNR:  Get the SNR of the last received packet
1568
1569 (% _msthash="506106" _msttexthash="1452009" %)
1570 AT+RSSI:  Get the RSSI of the last received packet
1571
1572 (% _msthash="506107" _msttexthash="2768142" %)
1573 AT+TDC:  Get or set the application data transmission interval in ms
1574
1575 (% _msthash="506108" _msttexthash="1083914" %)
1576 AT+PORT:  Get or set the application port
1577
1578 (% _msthash="506109" _msttexthash="622440" %)
1579 AT+DISAT:  Disable AT commands
1580
1581 (% _msthash="506110" _msttexthash="868361" %)
1582 AT+PWORD: Set password, max 9 digits
1583
1584 (% _msthash="506111" _msttexthash="2210299" %)
1585 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
1586
1587 (% _msthash="506112" _msttexthash="2113462" %)
1588 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
1589
1590 (% _msthash="506113" _msttexthash="2087423" %)
1591 AT+PDTA:  Print the sector data from start page to stop page
1592
1593 (% _msthash="506114" _msttexthash="1063127" %)
1594 AT+PLDTA:  Print the last few sets of data
1595
1596 (% _msthash="506115" _msttexthash="1999426" %)
1597 AT+CLRDTA:  Clear the storage, record position back to 1st
1598
1599 (% _msthash="506116" _msttexthash="442130" %)
1600 AT+SLEEP:  Set sleep mode
1601
1602 (% _msthash="506117" _msttexthash="1080222" %)
1603 AT+EXT:  Get or Set external sensor model
1604
1605 (% _msthash="506118" _msttexthash="1309490" %)
1606 AT+BAT:  Get the current battery voltage in mV
1607
1608 (% _msthash="506119" _msttexthash="813891" %)
1609 AT+CFG:  Print all configurations
1610
1611 (% _msthash="506120" _msttexthash="551707" %)
1612 AT+WMOD:  Get or Set Work Mode
1613
1614 (% _msthash="506121" _msttexthash="2631499" %)
1615 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
1616
1617 (% _msthash="506122" _msttexthash="3907150" %)
1618 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
1619
1620 (% _msthash="506123" _msttexthash="854620" %)
1621 AT+SETCNT:  Set the count at present
1622
1623 (% _msthash="506124" _msttexthash="2554877" %)
1624 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
1625
1626 (% _msthash="506125" _msttexthash="771849" %)
1627 AT+RPL:  Get or set response level
1628
1629 (% _msthash="506126" _msttexthash="1484314" %)
1630 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
1631
1632 (% _msthash="506127" _msttexthash="741728" %)
1633 AT+LEAPSEC:  Get or Set Leap Second
1634
1635 (% _msthash="506128" _msttexthash="1694017" %)
1636 AT+SYNCMOD:  Get or Set time synchronization method
1637
1638 (% _msthash="506129" _msttexthash="2235948" %)
1639 AT+SYNCTDC:  Get or set time synchronization interval in day
1640
1641 (% _msthash="506130" _msttexthash="425542" %)
1642 AT+PID:  Get or set the PID
1643
1644
1645
1646 == 6.2 Where to use AT commands and Downlink commands ==
1647
1648
1649 **AT commands：**
1650
1651 [[image:image-20220620153708-1.png||height="603" width="723"]]
1652
1653
1654 **Downlink commands:**
1655
1656
1657
1658 (% style="color:blue" %)**TTN:**
1659
1660 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
1661
1662
1663
1664 (% style="color:blue" %)**Helium：**
1665
1666 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
1667
1668
1669
1670 (% style="color:blue" %)**Chirpstack: The downlink window will not be displayed until the network is accessed**
1671
1672
1673 [[image:image-20220615094850-6.png||_mstalt="433082"]]
1674
1675
1676 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
1677
1678
1679
1680 (% style="color:blue" %)**Aws:**
1681
1682 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1683
1684
1685
1686 == 6.3 How to change the uplink interval？ ==
1687
1688
1689 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/||_msthash="506137" _msttexthash="5712018" style="background-color: rgb(255, 255, 255);"]]
1690
1691
1692
1693 == 6.4 How to use TTL-USB to connect a PC to input AT commands? ==
1694
1695
1696 [[image:image-20220615153355-1.png]]
1697
1698 [[image:1655802313617-381.png]]
1699
1700
1701 (((
1702 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.
1703 )))
1704
1705
1706 Input password and ATZ to activate LHT65N,As shown below:
1707
1708 [[image:image-20220615154519-3.png||height="672" width="807"]]
1709
1710
1711
1712 == 6.5 How to use TTL-USB to connect PC to upgrade firmware? ==
1713
1714
1715 [[image:image-20220615153355-1.png]]
1716
1717
1718 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1719
1720 [[image:image-20220615170542-5.png]]
1721
1722
1723
1724 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1725
1726 (% _msthash="506146" _msttexthash="52173160" %)
1727 First connect the four lines；(% style="display:none" %)
1728
1729 [[image:image-20220621170938-1.png||height="413" width="419"]](% _mstvisible="1" %)，(% style="display:none" %)
1730
1731
1732 (% _mstvisible="1" %)Then use DuPont cable to short circuit port3 and port1, and then release them, so that the device enters bootlaod mode.
1733
1734 [[image:image-20220621170938-2.png]]
1735
1736
1737
1738 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1739
1740 [[image:image-20220615171334-6.png]]
1741
1742
1743 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1744
1745
1746 When this interface appears, it indicates that the download has been completed.
1747
1748 [[image:image-20220620160723-8.png]]
1749
1750
1751 Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
1752
1753
1754
1755 == 6.6 Using USB-TYPE-C to connect to the computer using the AT command ==
1756
1757
1758 [[image:image-20220623110706-1.png]]
1759
1760
1761 [[image:image-20220623112117-4.png||height="459" width="343"]]
1762
1763
1764 (((
1765 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.
1766 )))
1767
1768
1769 Input password and ATZ to activate LHT65N,As shown below:
1770
1771 [[image:image-20220615154519-3.png||height="672" width="807"]]
1772
1773
1774
1775 == 6.7 How to use  USB-TYPE-C to connect PC to upgrade firmware? ==
1776
1777
1778 [[image:image-20220623110706-1.png]]
1779
1780
1781 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1782
1783 [[image:image-20220615170542-5.png]]
1784
1785
1786
1787 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1788
1789 (% _msthash="506146" _msttexthash="52173160" %)
1790 First connect the four lines；
1791
1792 (% _msthash="506146" _msttexthash="52173160" %)
1793 [[image:image-20220623113959-5.png||height="528" width="397"]]
1794
1795 (% _msthash="506146" _msttexthash="52173160" %)
1796 Press and hold the start key to restart and enter  (% _mstvisible="1" %)bootlaod(%%) mode.
1797
1798
1799
1800 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1801
1802 [[image:image-20220615171334-6.png]]
1803
1804
1805 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1806
1807
1808 When this interface appears, it indicates that the download has been completed.
1809
1810 [[image:image-20220620160723-8.png]]
1811
1812
1813 Finally,restart reset device again
1814
1815
1816
1817 = 7. Order Info =
1818
1819
1820 Part Number: (% _mstvisible="4" style="color:#4f81bd" %)** LHT65N-XX-YY**
1821
1822 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
1823
1824 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
1825 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
1826 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
1827 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
1828 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
1829 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**US915**(%%): LoRaWAN US915 band
1830 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
1831 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
1832
1833 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
1834
1835 * (% style="color:red" %)**E3**(%%): External Temperature Probe
1836
1837 = 8. Packing Info =
1838
1839
1840 **Package Includes**:
1841
1842 * LHT65N Temperature & Humidity Sensor x 1
1843 * Optional external sensor
1844
1845 **Dimension and weight**:
1846
1847 * Device Size:  10 x 10 x 3.5 cm
1848 * Device Weight: 120.5g
1849
1850 = 9. Reference material =
1851
1852
1853 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
1854
1855 = 10. FCC Warning =
1856
1857
1858 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
1859
1860 (1) This device may not cause harmful interference；
1861
1862 (2) this device must accept any interference received, including interference that may cause undesired operation.
1863
1864
1865

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