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Version 210.8 by Xiaoling on 2022/10/26 16:46
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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 ==
130
131
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.
134
135
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 ===
147
148
149 (((
150 Create a device in TTN V3 with the OTAA keys from LHT65N.
151 )))
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"]]
168
169
170 [[image:image-20220522232954-5.png||_mstalt="431847" _mstvisible="3"]]
171
172
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
313
314 [[image:image-20220522235639-6.png||_mstalt="433212" _mstvisible="3"]]
315
316
317 * External temperature= (0xF54F-65536)/100=-27.37℃
318
319 The last 2 bytes of data are meaningless
320
321 If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
322
323
324
325 ==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
326
327
328 (((
329 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:
330 )))
331
332 (((
333
334 )))
335
336 (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:480px" %)
337 |=(% style="width: 50px;" %)(((
338 **Size(bytes)**
339 )))|=(% style="width: 70px;" %)(((
340 **2**
341 )))|=(% style="width: 120px;" %)(((
342 **2**
343 )))|=(% style="width: 120px;" %)(((
344 **2**
345 )))|=(% style="width: 50px;" %)(((
346 **1**
347 )))|=(% style="width: 70px;" %)(((
348 **4**
349 )))
350 |(% style="width:110px" %)(((
351 **Value**
352 )))|(% style="width:71px" %)(((
353 [[External temperature>>||anchor="H4.2SetExternalSensorMode"]]
354 )))|(% style="width:99px" %)(((
355 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
356 )))|(% style="width:132px" %)(((
357 BAT Status & [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
358 )))|(% style="width:54px" %)(((
359 Status & Ext
360 )))|(% style="width:64px" %)(((
361 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp"]]
362 )))
363
364 * **Battery status & Built-in Humidity**
365
366 (% _mstvisible="1" border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:461px" %)
367 |=(% style="width: 67px;" %)Bit(bit)|=(% style="width: 256px;" %)[15:14]|=(% style="width: 132px;" %)[11:0]
368 |(% style="width:67px" %)Value|(% style="width:256px" %)(((
369 BAT Status
370 00(b): Ultra Low ( BAT <= 2.50v)
371 01(b): Low  (2.50v <=BAT <= 2.55v)
372 10(b): OK   (2.55v <= BAT <=2.65v)
373 11(b): Good   (BAT >= 2.65v)
374 )))|(% style="width:132px" %)(((
375 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
376 )))
377
378 * **Status & Ext Byte**
379
380 (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:500px" %)
381 |=(% 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]**
382 |=(% 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)
383
384 * (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
385 * (% 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.
386 * (% 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)
387
388 ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
389
390
391 In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
392
393 be used to power the external ADC sensor; user can control the power on time for this
394
395 (% style="color:blue" %)**sensor by setting:**
396
397 **AT+EXT=6,timeout**  (% _msthash="506085" _msttexthash="8782189" _mstvisible="3" style="color:red" %)**Time to power this sensor, from 0 ~~ 65535ms**
398
399 **For example:**
400
401 AT+EXT=6,1000 will power this sensor for 1000ms before sampling the ADC value.
402
403
404 Or use **downlink command A2** to set the same.
405
406 The measuring range of the node is only about 0.1V to 1.1V The voltage resolution is about 0.24mv.
407
408 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.
409
410 [[image:image-20220628150112-1.png||height="241" width="285"]]
411
412
413 When ADC_IN1 pin is connected to GND or suspended, ADC value is 0
414
415 [[image:image-20220628150714-4.png]]
416
417
418 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.
419
420
421 1) The minimum range is about 0.1V. Each chip has internal calibration, so this value is close to 0.1V
422
423 [[image:image-20220628151005-5.png]]
424
425
426 2) The maximum range is about 1.1V. Each chip has internal calibration, so this value is close to 1.1v
427
428 [[image:image-20220628151056-6.png]]
429
430
431 3) Within range
432
433 [[image:image-20220628151143-7.png]]
434
435
436
437 ==== 2.4.6.4 Ext~=2 TMP117 Sensor （Since Firmware v1.3） ====
438
439
440 [[image:image-20220927095645-1.png||height="534" width="460"]]
441
442
443 (% style="color:blue" %)**Ext=2,Temperature Sensor(TMP117)：**
444
445 [[image:image-20220906102307-7.png]]
446
447
448 (% style="color:blue" %)**Interrupt Mode and Counting Mode:**
449
450 The external cable NE2 can be use for MOD4 and MOD8
451
452
453
454 ==== 2.4.6.5 Ext~=4 Interrupt Mode （Since Firmware v1.3） ====
455
456
457 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will send an uplink when there is a trigger.**
458
459
460 (% style="color:blue" %)**Interrupt Mode can be used to connect to external interrupt sensors such as:**
461
462 (% style="color:#037691" %)**Case 1: Door Sensor.** (%%)3.3v Out for such sensor is just to detect Open/Close.
463
464 In Open State, the power consumption is the same as if there is no probe
465
466 In Close state, the power consumption will be 3uA higher than normal.
467
468 [[image:image-20220906100852-1.png||height="205" width="377"]]
469
470
471 Ext=4,Interrupt Sensor：
472
473 (% border="1.5" cellpadding="4" cellspacing="4" style="background-color:#ffffcc; color:green; height:6px; width:478px" %)
474 |(% style="width:101px" %)(((
475 AT+EXT=4,1
476 )))|(% style="width:373px" %)(((
477 Sent uplink packet in both rising and falling interrupt
478 )))
479 |(% style="width:101px" %)(((
480 AT+EXT=4,2
481 )))|(% style="width:373px" %)(((
482 Sent uplink packet only in falling interrupt
483 )))
484 |(% style="width:101px" %)(((
485 AT+EXT=4,3
486 )))|(% style="width:373px" %)(((
487 Sent uplink packet only in rising interrupt
488 )))
489
490 Trigger by falling edge:
491
492 [[image:image-20220906101145-2.png]]
493
494
495 Trigger by raising edge：
496
497 [[image:image-20220906101145-3.png]]
498
499
500
501
502 ==== 2.4.6.6 Ext~=8 Counting Mode（Since Firmware v1.3） ====
503
504
505 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will count for every interrupt and uplink periodically.**
506
507
508 (% 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.
509
510 [[image:image-20220906101320-4.png||height="366" width="698"]]
511
512
513 (% 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
514
515 [[image:image-20220906101320-5.png||height="353" width="696"]]
516
517
518 Ext=8, Counting Sensor ( 4 bytes)：
519
520 (% border="2" cellpadding="4" cellspacing="4" style="background-color:#ffffcc; color:green; height:6px; width:381px" %)
521 |(% style="width:138px" %)(((
522 AT+EXT=8,0
523 )))|(% style="width:240px" %)(((
524 Count at falling interrupt
525 )))
526 |(% style="width:138px" %)(((
527 AT+EXT=8,1
528 )))|(% style="width:240px" %)(((
529 Count at rising interrupt
530 )))
531 |(% style="width:138px" %)(((
532 AT+SETCNT=60
533 )))|(% style="width:240px" %)(((
534 Sent current count to 60
535 )))
536
537 [[image:image-20220906101320-6.png]]
538
539
540 (% style="color:blue" %)**A2 downlink Command：**
541
542 A2 02:  Same as AT+EXT=2 (AT+EXT= second byte)
543
544 A2 06 01 F4:  Same as AT+EXT=6,500 (AT+EXT= second byte, third and fourth bytes)
545
546 A2 04 02:  Same as AT+EXT=4,2 (AT+EXT= second byte, third byte)
547
548 A2 08 01 00:  Same as AT+EXT=8,0 (AT+EXT= second byte, fourth byte)
549
550 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)
551
552
553
554 == 2.5 Show data on Datacake ==
555
556
557 (((
558 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:
559 )))
560
561 (((
562
563 )))
564
565 (((
566 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the LoRaWAN network.
567 )))
568
569 (((
570 (% 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.
571 )))
572
573 (((
574
575 )))
576
577 (((
578 Add Datacake:
579 )))
580
581
582 [[image:image-20220523000825-7.png||_mstalt="429884" _mstvisible="3" height="262" width="583"]]
583
584
585
586 Select default key as Access Key:
587
588
589 [[image:image-20220523000825-8.png||_mstalt="430248" _mstvisible="3" height="453" width="406"]]
590
591
592 In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/||_mstvisible="2"]]) , add LHT65 device.
593
594
595 [[image:image-20220523000825-9.png||_mstalt="430612" _mstvisible="3" height="366" width="392"]]
596
597
598 [[image:image-20220523000825-10.png||_mstalt="450619" _mstvisible="3" height="413" width="728"]]
599
600
601
602 == 2.6 Datalog Feature ==
603
604
605 (((
606 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.
607 )))
608
609
610
611 === 2.6.1 Ways to get datalog via LoRaWAN ===
612
613
614 There are two methods:
615
616 (% style="color:blue" %)**Method 1:** (%%)IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specified time range.
617
618
619 (% 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.
620
621 (% style="color:red" %)**Note for method 2:**
622
623 * a) LHT65N will do an ACK check for data records sending to make sure every data arrive server.
624 * 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.
625
626 Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
627
628
629 [[image:image-20220703111700-2.png||height="381" width="1119"]]
630
631
632 === 2.6.2 Unix TimeStamp ===
633
634
635 LHT65N uses Unix TimeStamp format based on
636
637
638 [[image:image-20220523001219-11.png||_mstalt="450450" _mstvisible="3" height="97" width="627"]]
639
640
641
642 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/||_mstvisible="3"]] :
643
644 Below is the converter example
645
646 [[image:image-20220523001219-12.png||_mstalt="450827" _mstvisible="3" height="298" width="720"]]
647
648 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
649
650
651
652 === 2.6.3 Set Device Time ===
653
654
655 (((
656 (% style="color:blue" %)**There are two ways to set device's time:**
657 )))
658
659 (((
660 **1.  Through LoRaWAN MAC Command (Default settings)**
661 )))
662
663 (((
664 User need to set SYNCMOD=1 to enable sync time via MAC command.
665 )))
666
667 (((
668 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).
669 )))
670
671 (((
672 (% 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.**
673 )))
674
675 (((
676
677 )))
678
679 (((
680 **2. Manually Set Time**
681 )))
682
683 (((
684 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
685 )))
686
687
688
689 === 2.6.4 Poll sensor value ===
690
691
692 User can poll sensor value based on timestamps from the server. Below is the downlink command.
693
694 [[image:image-20220523152302-15.png||_mstalt="451581" _mstvisible="3"]]
695
696
697 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.
698
699 For example, downlink command **31 5FC5F350 5FC6 0160 05**
700
701 Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00’s data
702
703 Uplink Internal =5s，means LHT65N will send one packet every 5s. range 5~~255s.
704
705
706
707 === 2.6.5 Datalog Uplink payload ===
708
709
710 The Datalog poll reply uplink will use below payload format.
711
712 **Retrieval data payload:**
713
714 (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:510px" %)
715 |=(% style="width: 60px;" %)(((
716 **Size(bytes)**
717 )))|=(% style="width: 120px;" %)**2**|=(% style="width: 60px;" %)**2**|=(% style="width: 80px;" %)**2**|=(% style="width: 90px;" %)**1**|=(% style="width: 50px;" %)**4**
718 |(% 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"]]
719
720
721 **Poll message flag & Ext:**
722
723
724 [[image:image-20221006192726-1.png||height="112" width="754"]]
725
726 (% 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)
727
728 (% style="color:blue" %)**Poll Message Flag**(%%): 1: This message is a poll message reply.
729
730 * Poll Message Flag is set to 1.
731
732 * Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
733
734
735
736 For example, in US915 band, the max payload for different DR is:
737
738 (% style="color:blue" %)**a) DR0:** (%%)max is 11 bytes so one entry of data
739
740 (% style="color:blue" %)**b) DR1:**(%%) max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
741
742 (% style="color:blue" %)**c) DR2:**(%%) total payload includes 11 entries of data
743
744 (% style="color:blue" %)**d) DR3: **(%%)total payload includes 22 entries of data.
745
746 If devise doesn't have any data in the polling time. Device will uplink 11 bytes of 0   
747
748
749 **Example:**
750
751 If LHT65N has below data inside Flash:
752
753 [[image:image-20220523144455-1.png||_mstalt="430040" _mstvisible="3" height="335" width="735"]]
754
755
756 If user sends below downlink command: (% style="background-color:yellow" %)3160065F9760066DA705
757
758 Where : Start time: 60065F97 = time 21/1/19 04:27:03
759
760 Stop time: 60066DA7= time 21/1/19 05:27:03
761
762
763 **LHT65N will uplink this payload.**
764
765 [[image:image-20220523001219-13.png||_mstalt="451204" _mstvisible="3" height="421" style="text-align:left" width="727"]]
766
767
768 7FFF089801464160065F977FFF088E014B41600660097FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
769
770 Where the first 11 bytes is for the first entry:
771
772 7FFF089801464160065F97
773
774 Ext sensor data=0x7FFF/100=327.67
775
776 Temp=0x0898/100=22.00
777
778 Hum=0x0146/10=32.6
779
780 poll message flag & Ext=0x41,means reply data,Ext=1
781
782 Unix time is 0x60065F97=1611030423s=21/1/19 04:27:03
783
784
785
786 == 2.7 Alarm Mode ==
787
788
789 (((
790 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.
791 )))
792
793 (((
794 (% style="color:red" %)**Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.**
795
796
797
798 === 2.7.1 ALARM MODE ( Since v1.3.1 firmware) ===
799
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
819
820 )))
821
822 (((
823 === 2.7.2 ALARM MODE ( Before v1.3.1 firmware) ===
824
825
826 )))
827
828 (% _mstvisible="1" class="box infomessage" %)
829 (((
830 (((
831 **AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)
832 )))
833
834 (((
835 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
836 )))
837
838 (((
839 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
840 )))
841
842 (((
843 **AT+ARTEMP=？ **:  Gets the alarm range of the internal temperature sensor(% _mstvisible="3" style="display:none" %)
844 )))
845
846 (((
847 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
848 )))
849 )))
850
851 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
852
853 Total bytes: 8 bytes
854
855 **Example:**AA0100010001003C
856
857 WMOD=01
858
859 CITEMP=0001
860
861 TEMPlow=0001
862
863 TEMPhigh=003C
864
865
866
867 == 2.8 LED Indicator ==
868
869
870 The LHT65 has a triple color LED which for easy showing different stage .
871
872 While user press ACT button, the LED will work as per LED status with ACT button.
873
874 In a normal working state:
875
876 * For each uplink, the BLUE LED or RED LED will blink once.
877 BLUE LED when external sensor is connected.
878 * RED LED when external sensor is not connected
879 * For each success downlink, the PURPLE LED will blink once
880
881 == 2.9 installation ==
882
883
884 (% _mstvisible="1" %)
885 [[image:image-20220516231650-1.png||_mstalt="428597" _mstvisible="3" height="436" width="428"]]
886
887
888
889 = 3. Sensors and Accessories =
890
891
892 == 3.1 E2 Extension Cable ==
893
894
895 [[image:image-20220619092222-1.png||height="182" width="188"]][[image:image-20220619092313-2.png||height="182" width="173"]]
896
897
898 **1m long breakout cable for LHT65N. Features:**
899
900 * (((
901 Use for AT Command， works for both LHT52/LHT65N
902 )))
903 * (((
904 Update firmware for LHT65N, works for both LHT52/LHT65N
905 )))
906 * (((
907 Supports ADC mode to monitor external ADC
908 )))
909 * (((
910 Supports Interrupt mode
911 )))
912 * (((
913 Exposed All pins from the LHT65N Type-C connector.
914
915
916
917 )))
918
919 [[image:image-20220619092421-3.png||height="371" width="529"]]
920
921
922
923
924 == 3.2 E3 Temperature Probe ==
925
926
927 [[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"]]
928
929
930 Temperature sensor with 2 meters cable long
931
932 * Resolution: 0.0625 °C
933 * ±0.5°C accuracy from -10°C to +85°C
934 * ±2°C accuracy from -55°C to +125°C
935 * Operating Range: -40 ~~ 125 °C
936 * Working voltage 2.35v ~~ 5v
937
938 = 4. Configure LHT65N via AT command or LoRaWAN downlink =
939
940
941 (((
942 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
943 )))
944
945 * (((
946 AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
947 )))
948
949 * (((
950 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
951 )))
952
953 (((
954 There are two kinds of commands to configure LHT65N, they are:
955 )))
956
957 * (((
958 (% style="color:#4f81bd" %)**General Commands**.
959 )))
960
961 (((
962 These commands are to configure:
963 )))
964
965 1. (((
966 General system settings like: uplink interval.
967 )))
968 1. (((
969 LoRaWAN protocol & radio-related commands.
970 )))
971
972 (((
973 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]]
974 )))
975
976 * (((
977 (% style="color:#4f81bd" %)**Commands special design for LHT65N**
978 )))
979
980 (((
981 These commands are only valid for LHT65N, as below:
982 )))
983
984
985
986 == 4.1 Set Transmit Interval Time ==
987
988
989 Feature: Change LoRaWAN End Node Transmit Interval.
990
991
992 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
993
994 [[image:image-20220523150701-2.png||_mstalt="427453" _mstvisible="3"]]
995
996
997 (% style="color:#4f81bd" %)**Downlink Command: 0x01**
998
999 Format: Command Code (0x01) followed by 3 bytes time value.
1000
1001 If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.
1002
1003 * **Example 1**: Downlink Payload: 0100001E  ~/~/ Set Transmit Interval (TDC) = 30 seconds
1004
1005 * **Example 2**: Downlink Payload: 0100003C  ~/~/ Set Transmit Interval (TDC) = 60 seconds
1006
1007 == 4.2 Set External Sensor Mode ==
1008
1009
1010 Feature: Change External Sensor Mode.
1011
1012
1013 (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1014
1015 [[image:image-20220523150759-3.png||_mstalt="432146" _mstvisible="3"]]
1016
1017
1018 (% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1019
1020 Total bytes: 2 ~~ 5 bytes
1021
1022 **Example:**
1023
1024 * 0xA201: Set external sensor type to E1
1025
1026 * 0xA209: Same as AT+EXT=9
1027
1028 * 0xA20702003c: Same as AT+SETCNT=60
1029
1030 == 4.3 Enable/Disable uplink Temperature probe ID ==
1031
1032
1033 (((
1034 Feature: If PID is enabled, device will send the temperature probe ID on:
1035 )))
1036
1037 * (((
1038 First Packet after OTAA Join
1039 )))
1040 * (((
1041 Every 24 hours since the first packet.
1042 )))
1043
1044 (((
1045 PID is default set to disable (0)
1046
1047
1048 )))
1049
1050 (% style="color:#4f81bd" %)**AT Command:**
1051
1052 [[image:image-20220523150928-4.png||_mstalt="431821" _mstvisible="3"]]
1053
1054
1055 (% style="color:#4f81bd" %)**Downlink Command:**
1056
1057 * **0xA800**  **~-~->** AT+PID=0
1058 * **0xA801**     **~-~->** AT+PID=1
1059
1060 == 4.4 Set Password ==
1061
1062
1063 Feature: Set device password, max 9 digits
1064
1065
1066 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1067
1068 [[image:image-20220523151052-5.png||_mstalt="428623" _mstvisible="3"]]
1069
1070
1071 (% style="color:#4f81bd" %)**Downlink Command:**
1072
1073 No downlink command for this feature.
1074
1075
1076
1077 == 4.5 Quit AT Command ==
1078
1079
1080 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1081
1082
1083 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1084
1085 [[image:image-20220523151132-6.png||_mstalt="428649" _mstvisible="3"]]
1086
1087
1088 (% style="color:#4f81bd" %)**Downlink Command:**
1089
1090 No downlink command for this feature.
1091
1092
1093
1094 == 4.6 Set to sleep mode ==
1095
1096
1097 Feature: Set device to sleep mode
1098
1099 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1100 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1101
1102 (% _msthash="315251" _msttexthash="289783" style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1103
1104 [[image:image-20220523151218-7.png||_mstalt="430703" _mstvisible="3"]]
1105
1106
1107 (% _msthash="315252" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1108
1109 * There is no downlink command to set to Sleep mode.
1110
1111 == 4.7 Set system time ==
1112
1113
1114 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1115
1116
1117 (% _msthash="315253" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1118
1119 [[image:image-20220523151253-8.png||_mstalt="430677" _mstvisible="3"]]
1120
1121
1122 (% _msthash="315254" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1123
1124 0x306007806000  ~/~/  Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1125
1126
1127
1128 == 4.8 Set Time Sync Mode ==
1129
1130
1131 (((
1132 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1133 )))
1134
1135 (((
1136 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.
1137
1138
1139 )))
1140
1141 (% _msthash="506058" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1142
1143 [[image:image-20220523151336-9.png||_mstalt="431717" _mstvisible="3"]]
1144
1145
1146 (% style="color:#4f81bd" %)**Downlink Command:**
1147
1148 0x28 01  ~/~/  Same As AT+SYNCMOD=1
1149 0x28 00  ~/~/  Same As AT+SYNCMOD=0
1150
1151
1152
1153 == 4.9 Set Time Sync Interval ==
1154
1155
1156 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1157
1158
1159 (% _msthash="315256" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1160
1161 [[image:image-20220523151411-10.png||_mstalt="449696" _mstvisible="3"]]
1162
1163
1164 (% _msthash="315257" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1165
1166 **0x29 0A**  ~/~/ Same as AT+SYNCTDC=0x0A
1167
1168
1169
1170 == 4.10 Print data entries base on page. ==
1171
1172
1173 Feature: Print the sector data from start page to stop page (max is 416 pages).
1174
1175
1176 (% _msthash="315258" _msttexthash="264953" style="color:#4f81bd" %)**AT Command: AT+PDTA**
1177
1178 [[image:image-20220523151450-11.png||_mstalt="451035" _mstvisible="3"]]
1179
1180
1181 (% _msthash="315259" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1182
1183 No downlink commands for feature
1184
1185
1186
1187 == 4.11 Print last few data entries. ==
1188
1189
1190 Feature: Print the last few data entries
1191
1192
1193 (% _msthash="315260" _msttexthash="288522" style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1194
1195 [[image:image-20220523151524-12.png||_mstalt="452101" _mstvisible="3"]]
1196
1197
1198 (% _msthash="315261" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1199
1200 No downlink commands for feature
1201
1202
1203
1204 == 4.12 Clear Flash Record ==
1205
1206
1207 Feature: Clear flash storage for data log feature.
1208
1209
1210 (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1211
1212 [[image:image-20220523151556-13.png||_mstalt="454129" _mstvisible="3"]]
1213
1214
1215 (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1216
1217 * Example: 0xA301  ~/~/  Same as AT+CLRDTA
1218
1219 == 4.13 Auto Send None-ACK messages ==
1220
1221
1222 (% _msthash="315394" _msttexthash="51837149" _mstvisible="1" %)
1223 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.
1224
1225
1226 (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1227
1228 (% _msthash="315396" _msttexthash="734682" _mstvisible="1" %)
1229 The default factory setting is 0
1230
1231 (% _mstvisible="1" border="1" style="background-color:#ffffcc; color:green; width:450px" %)
1232 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 171px;" %)(% _msthash="1231737" _msttexthash="251862" _mstvisible="6" %)**Command Example**|=(% _mstvisible="4" style="width: 219px;" %)(% _msthash="1231738" _msttexthash="116025" _mstvisible="6" %)**Function**|=(% _mstvisible="4" style="width: 119px;" %)(% _msthash="1231739" _msttexthash="116831" _mstvisible="6" %)**Response**
1233 (% _mstvisible="3" %)|(% _msthash="1231321" _msttexthash="130455" _mstvisible="4" style="width:171px" %)AT+PNACKMD=1|(% _msthash="1231322" _msttexthash="377026" _mstvisible="4" style="width:219px" %)Poll None-ACK message|(% _msthash="1231323" _msttexthash="14989" _mstvisible="4" style="width:119px" %)OK
1234
1235 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1236
1237 * Example: 0x3401  ~/~/  Same as AT+PNACKMD=1
1238
1239 == 4.14 Modified ATWOOD command for external sensor TMP117 or DS18B20 temperature alarm ==
1240
1241
1242 Feature: Set internal and external temperature sensor alarms.
1243
1244 (% border="1" style="background-color:#ffffcc; color:green; width:450px" %)
1245 |(%%)(% _msthash="1231737" _msttexthash="251862" _mstvisible="6" %)**Command Example**|(%%)(% _msthash="1231738" _msttexthash="116025" _mstvisible="6" %)**Function**|(%%)(% _msthash="1231739" _msttexthash="116831" _mstvisible="6" %)**Response**
1246 |(%%)(% style="color:#037691" %)AT+WMOD=parameter1,parameter2,parameter3,parameter4|Set internal and external temperature sensor alarms|OK
1247
1248 (% style="color:#037691" %)**AT+WMOD=parameter1,parameter2,parameter3,parameter4**
1249
1250 (% style="color:#037691" %)**Parameter 1**(%%):  Alarm mode:
1251
1252 0): Cancel
1253
1254 1): Threshold alarm
1255
1256 2): Fluctuation alarm
1257
1258
1259 (% style="color:#037691" %)** Parameter 2**(%%):  Sampling time. Unit: seconds, up to 255 seconds.
1260
1261 (% 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.**
1262
1263
1264 (% style="color:#037691" %) **Parameter 3 and parameter 4:**
1265
1266 1):  If Alarm Mode is set to 1: Parameter 3 and parameter 4 are valid, as before, they represent low temperature and high temperature.
1267
1268 Such as AT+WMOD=1,60,45,105, it means high and low temperature alarm.
1269
1270
1271 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.
1272
1273 Such as AT+WMOD=2,10,2,it means that it is a fluctuation alarm.
1274
1275 If the difference between the current collected temperature and the last Uplin is ±2 degrees, the alarm will be issued.
1276
1277
1278 (% style="color:#4f81bd" %)**Downlink Command: 0xA5**
1279
1280 0xA5 00 ~-~- AT+WMOD=0.
1281
1282 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 )
1283
1284 0xA5 02 0A 02 ~-~- AT+WMOD=2,10,2  (AT+WMOD = second byte, third byte, fourth byte)
1285
1286 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.
1287
1288
1289
1290 = 5. Battery & How to replace =
1291
1292
1293 == 5.1 Battery Type ==
1294
1295
1296 (((
1297 (((
1298 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.
1299 )))
1300 )))
1301
1302 (((
1303
1304 )))
1305
1306 (((
1307 (((
1308 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1309 [[image:image-20220515075034-1.png||_mstalt="428961" _mstvisible="4" height="208" width="644"]]
1310 )))
1311 )))
1312
1313 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1314
1315
1316
1317 == 5.2 Replace Battery ==
1318
1319
1320 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.
1321
1322 [[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"]]
1323
1324
1325 == 5.3 Battery Life Analyze ==
1326
1327
1328 (((
1329 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:
1330 [[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]]
1331 )))
1332
1333 (((
1334
1335 )))
1336
1337 (((
1338 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]]
1339 )))
1340
1341
1342
1343 = 6. FAQ =
1344
1345
1346 == 6.1 How to use AT Command? ==
1347
1348
1349 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.
1350
1351 [[image:image-20220530085651-1.png||_mstalt="429949"]]
1352
1353
1354 (% _msthash="506061" _msttexthash="170755" %)**Connection:**
1355
1356 * (% style="background-color:yellow" %)**USB to TTL GND <~-~->GND**
1357 * (% style="background-color:yellow" %)**USB to TTL RXD <~-~-> D+**
1358 * (% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1359
1360 (((
1361 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.
1362 )))
1363
1364
1365 Input password and ATZ to activate LHT65N,As shown below:
1366
1367 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1368
1369
1370 (% _msthash="506066" _msttexthash="544869" %)
1371 AT Command List is as below:
1372
1373 (% _msthash="506067" _msttexthash="361920" %)
1374 AT+<CMD>? :  Help on <CMD>
1375
1376 (% _msthash="506068" _msttexthash="243061" %)
1377 AT+<CMD> :  Run <CMD>
1378
1379 (% _msthash="506069" _msttexthash="704197" %)
1380 AT+<CMD>=<value> :  Set the value
1381
1382 (% _msthash="506070" _msttexthash="455676" %)
1383 AT+<CMD>=? :  Get the value
1384
1385 (% _msthash="506071" _msttexthash="670553" %)
1386 AT+DEBUG:  Set more info output
1387
1388 (% _msthash="506072" _msttexthash="485888" %)
1389 ATZ:  Trig a reset of the MCU
1390
1391 (% _msthash="506073" _msttexthash="2068872" %)
1392 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1393
1394 (% _msthash="506074" _msttexthash="689169" %)
1395 AT+DEUI:  Get or Set the Device EUI
1396
1397 (% _msthash="506075" _msttexthash="960414" %)
1398 AT+DADDR:  Get or Set the Device Address
1399
1400 (% _msthash="506076" _msttexthash="1079897" %)
1401 AT+APPKEY:  Get or Set the Application Key
1402
1403 (% _msthash="506077" _msttexthash="1326143" %)
1404 AT+NWKSKEY:  Get or Set the Network Session Key
1405
1406 (% _msthash="506078" _msttexthash="1573000" %)
1407 AT+APPSKEY:  Get or Set the Application Session Key
1408
1409 (% _msthash="506079" _msttexthash="1041729" %)
1410 AT+APPEUI:  Get or Set the Application EUI
1411
1412 (% _msthash="506080" _msttexthash="2104206" %)
1413 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1414
1415 (% _msthash="506081" _msttexthash="3369288" %)
1416 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1417
1418 (% _msthash="506082" _msttexthash="1894529" %)
1419 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1420
1421 (% _msthash="506083" _msttexthash="3864172" %)
1422 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1423
1424 (% _msthash="506084" _msttexthash="1712204" %)
1425 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1426
1427 (% _msthash="506085" _msttexthash="1281202" %)
1428 AT+RX2FQ:  Get or Set the Rx2 window frequency
1429
1430 (% _msthash="506086" _msttexthash="2796781" %)
1431 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1432
1433 (% _msthash="506087" _msttexthash="3285165" %)
1434 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1435
1436 (% _msthash="506088" _msttexthash="3286179" %)
1437 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1438
1439 (% _msthash="506089" _msttexthash="4703803" %)
1440 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1441
1442 (% _msthash="506090" _msttexthash="4704999" %)
1443 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1444
1445 (% _msthash="506091" _msttexthash="1528683" %)
1446 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1447
1448 (% _msthash="506092" _msttexthash="757185" %)
1449 AT+NWKID:  Get or Set the Network ID
1450
1451 (% _msthash="506093" _msttexthash="1156597" %)
1452 AT+FCU:  Get or Set the Frame Counter Uplink
1453
1454 (% _msthash="506094" _msttexthash="1273987" %)
1455 AT+FCD:  Get or Set the Frame Counter Downlink
1456
1457 (% _msthash="506095" _msttexthash="859222" %)
1458 AT+CLASS:  Get or Set the Device Class
1459
1460 (% _msthash="506096" _msttexthash="384852" %)
1461 AT+JOIN:  Join network
1462
1463 (% _msthash="506097" _msttexthash="548626" %)
1464 AT+NJS:  Get the join status
1465
1466 (% _msthash="506098" _msttexthash="2546206" %)
1467 AT+SENDB:  Send hexadecimal data along with the application port
1468
1469 (% _msthash="506099" _msttexthash="1932307" %)
1470 AT+SEND:  Send text data along with the application port
1471
1472 (% _msthash="506100" _msttexthash="3560557" %)
1473 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
1474
1475 (% _msthash="506101" _msttexthash="1429701" %)
1476 AT+RECV:  Print last received data in raw format
1477
1478 (% _msthash="506102" _msttexthash="1735981" %)
1479 AT+VER:  Get current image version and Frequency Band
1480
1481 (% _msthash="506103" _msttexthash="1189474" %)
1482 AT+CFM:  Get or Set the confirmation mode (0-1)
1483
1484 (% _msthash="506104" _msttexthash="1718210" %)
1485 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1486
1487 (% _msthash="506105" _msttexthash="1339403" %)
1488 AT+SNR:  Get the SNR of the last received packet
1489
1490 (% _msthash="506106" _msttexthash="1452009" %)
1491 AT+RSSI:  Get the RSSI of the last received packet
1492
1493 (% _msthash="506107" _msttexthash="2768142" %)
1494 AT+TDC:  Get or set the application data transmission interval in ms
1495
1496 (% _msthash="506108" _msttexthash="1083914" %)
1497 AT+PORT:  Get or set the application port
1498
1499 (% _msthash="506109" _msttexthash="622440" %)
1500 AT+DISAT:  Disable AT commands
1501
1502 (% _msthash="506110" _msttexthash="868361" %)
1503 AT+PWORD: Set password, max 9 digits
1504
1505 (% _msthash="506111" _msttexthash="2210299" %)
1506 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
1507
1508 (% _msthash="506112" _msttexthash="2113462" %)
1509 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
1510
1511 (% _msthash="506113" _msttexthash="2087423" %)
1512 AT+PDTA:  Print the sector data from start page to stop page
1513
1514 (% _msthash="506114" _msttexthash="1063127" %)
1515 AT+PLDTA:  Print the last few sets of data
1516
1517 (% _msthash="506115" _msttexthash="1999426" %)
1518 AT+CLRDTA:  Clear the storage, record position back to 1st
1519
1520 (% _msthash="506116" _msttexthash="442130" %)
1521 AT+SLEEP:  Set sleep mode
1522
1523 (% _msthash="506117" _msttexthash="1080222" %)
1524 AT+EXT:  Get or Set external sensor model
1525
1526 (% _msthash="506118" _msttexthash="1309490" %)
1527 AT+BAT:  Get the current battery voltage in mV
1528
1529 (% _msthash="506119" _msttexthash="813891" %)
1530 AT+CFG:  Print all configurations
1531
1532 (% _msthash="506120" _msttexthash="551707" %)
1533 AT+WMOD:  Get or Set Work Mode
1534
1535 (% _msthash="506121" _msttexthash="2631499" %)
1536 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
1537
1538 (% _msthash="506122" _msttexthash="3907150" %)
1539 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
1540
1541 (% _msthash="506123" _msttexthash="854620" %)
1542 AT+SETCNT:  Set the count at present
1543
1544 (% _msthash="506124" _msttexthash="2554877" %)
1545 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
1546
1547 (% _msthash="506125" _msttexthash="771849" %)
1548 AT+RPL:  Get or set response level
1549
1550 (% _msthash="506126" _msttexthash="1484314" %)
1551 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
1552
1553 (% _msthash="506127" _msttexthash="741728" %)
1554 AT+LEAPSEC:  Get or Set Leap Second
1555
1556 (% _msthash="506128" _msttexthash="1694017" %)
1557 AT+SYNCMOD:  Get or Set time synchronization method
1558
1559 (% _msthash="506129" _msttexthash="2235948" %)
1560 AT+SYNCTDC:  Get or set time synchronization interval in day
1561
1562 (% _msthash="506130" _msttexthash="425542" %)
1563 AT+PID:  Get or set the PID
1564
1565
1566
1567 == 6.2 Where to use AT commands and Downlink commands ==
1568
1569
1570 **AT commands：**
1571
1572 [[image:image-20220620153708-1.png||height="603" width="723"]]
1573
1574
1575 **Downlink commands:**
1576
1577
1578
1579 (% style="color:blue" %)**TTN:**
1580
1581 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
1582
1583
1584
1585 (% style="color:blue" %)**Helium：**
1586
1587 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
1588
1589
1590
1591 (% style="color:blue" %)**Chirpstack: The downlink window will not be displayed until the network is accessed**
1592
1593
1594 [[image:image-20220615094850-6.png||_mstalt="433082"]]
1595
1596
1597 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
1598
1599
1600
1601 (% style="color:blue" %)**Aws:**
1602
1603 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1604
1605
1606
1607 == 6.3 How to change the uplink interval？ ==
1608
1609
1610 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);"]]
1611
1612
1613
1614 == 6.4 How to use TTL-USB to connect a PC to input AT commands? ==
1615
1616
1617 [[image:image-20220615153355-1.png]]
1618
1619 [[image:1655802313617-381.png]]
1620
1621
1622 (((
1623 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.
1624 )))
1625
1626
1627 Input password and ATZ to activate LHT65N,As shown below:
1628
1629 [[image:image-20220615154519-3.png||height="672" width="807"]]
1630
1631
1632
1633 == 6.5 How to use TTL-USB to connect PC to upgrade firmware? ==
1634
1635
1636 [[image:image-20220615153355-1.png]]
1637
1638
1639 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1640
1641 [[image:image-20220615170542-5.png]]
1642
1643
1644
1645 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1646
1647 (% _msthash="506146" _msttexthash="52173160" %)
1648 First connect the four lines；(% style="display:none" %)
1649
1650 [[image:image-20220621170938-1.png||height="413" width="419"]](% _mstvisible="1" %)，(% style="display:none" %)
1651
1652
1653 (% _mstvisible="1" %)Then use DuPont cable to short circuit port3 and port1, and then release them, so that the device enters bootlaod mode.
1654
1655 [[image:image-20220621170938-2.png]]
1656
1657
1658
1659 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1660
1661 [[image:image-20220615171334-6.png]]
1662
1663
1664 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1665
1666
1667 When this interface appears, it indicates that the download has been completed.
1668
1669 [[image:image-20220620160723-8.png]]
1670
1671
1672 Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
1673
1674
1675
1676 == 6.6 Using USB-TYPE-C to connect to the computer using the AT command ==
1677
1678
1679 [[image:image-20220623110706-1.png]]
1680
1681
1682 [[image:image-20220623112117-4.png||height="459" width="343"]]
1683
1684
1685 (((
1686 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.
1687 )))
1688
1689
1690 Input password and ATZ to activate LHT65N,As shown below:
1691
1692 [[image:image-20220615154519-3.png||height="672" width="807"]]
1693
1694
1695
1696 == 6.7 How to use  USB-TYPE-C to connect PC to upgrade firmware? ==
1697
1698
1699 [[image:image-20220623110706-1.png]]
1700
1701
1702 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1703
1704 [[image:image-20220615170542-5.png]]
1705
1706
1707
1708 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1709
1710 (% _msthash="506146" _msttexthash="52173160" %)
1711 First connect the four lines；
1712
1713 (% _msthash="506146" _msttexthash="52173160" %)
1714 [[image:image-20220623113959-5.png||height="528" width="397"]]
1715
1716 (% _msthash="506146" _msttexthash="52173160" %)
1717 Press and hold the start key to restart and enter  (% _mstvisible="1" %)bootlaod(%%) mode.
1718
1719
1720
1721 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1722
1723 [[image:image-20220615171334-6.png]]
1724
1725
1726 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1727
1728
1729 When this interface appears, it indicates that the download has been completed.
1730
1731 [[image:image-20220620160723-8.png]]
1732
1733
1734 Finally,restart reset device again
1735
1736
1737
1738 = 7. Order Info =
1739
1740
1741 Part Number: (% _mstvisible="4" style="color:#4f81bd" %)** LHT65N-XX-YY**
1742
1743 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
1744
1745 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
1746 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
1747 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
1748 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
1749 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
1750 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**US915**(%%): LoRaWAN US915 band
1751 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
1752 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
1753
1754 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
1755
1756 * (% style="color:red" %)**E3**(%%): External Temperature Probe
1757
1758 = 8. Packing Info =
1759
1760
1761 **Package Includes**:
1762
1763 * LHT65N Temperature & Humidity Sensor x 1
1764 * Optional external sensor
1765
1766 **Dimension and weight**:
1767
1768 * Device Size:  10 x 10 x 3.5 cm
1769 * Device Weight: 120.5g
1770
1771 = 9. Reference material =
1772
1773
1774 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
1775
1776 = 10. FCC Warning =
1777
1778
1779 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
1780
1781 (1) This device may not cause harmful interference；
1782
1783 (2) this device must accept any interference received, including interference that may cause undesired operation.
1784
1785
1786