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Version 210.7 by Xiaoling on 2022/10/26 16:05
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9 (% _msthash="315238" _msttexthash="18964465" _mstvisible="3" %)**Table of Contents：**
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11 {{toc/}}
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14
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: 110px;" %)
342 (((
343 **2**
344 )))|=(% style="width: 130px;" %)
345 (((
346 **2**
347 )))|=(% style="width: 50px;" %)
348 (((
349 **1**
350 )))|=(% style="width: 70px;" %)
351 (((
352 **4**
353 )))
354 |(% style="width:110px" %)
355 (((
356 **Value**
357 )))|(% style="width:71px" %)
358 (((
359 [[External temperature>>||anchor="H4.2SetExternalSensorMode"]]
360 )))|(% style="width:99px" %)(((
361 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
362 )))|(% style="width:132px" %)
363 (((
364 BAT Status & [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
365 )))|(% style="width:54px" %)(((
366 Status & Ext
367 )))|(% style="width:64px" %)(((
368 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp"]]
369 )))
370
371
372 * **Battery status & Built-in Humidity**
373
374 (% _mstvisible="1" border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:461px" %)
375 |=(% style="width: 67px;" %)Bit(bit)|=(% style="width: 256px;" %)[15:14]|=(% style="width: 132px;" %)[11:0]
376 |(% style="width:67px" %)Value|(% style="width:256px" %)(((
377 BAT Status
378 00(b): Ultra Low ( BAT <= 2.50v)
379 01(b): Low  (2.50v <=BAT <= 2.55v)
380 10(b): OK   (2.55v <= BAT <=2.65v)
381 11(b): Good   (BAT >= 2.65v)
382 )))|(% style="width:132px" %)(((
383 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
384 )))
385
386 * **Status & Ext Byte**
387
388 (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:500px" %)
389 |(% 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]**
390 |(% 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)
391
392 * (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
393 * (% 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.
394 * (% 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)
395
396 ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
397
398
399 In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
400
401 be used to power the external ADC sensor; user can control the power on time for this
402
403 (% style="color:blue" %)**sensor by setting:**
404
405 **AT+EXT=6,timeout**  (% _msthash="506085" _msttexthash="8782189" _mstvisible="3" style="color:red" %)**Time to power this sensor, from 0 ~~ 65535ms**
406
407 **For example:**
408
409 AT+EXT=6,1000 will power this sensor for 1000ms before sampling the ADC value.
410
411
412 Or use **downlink command A2** to set the same.
413
414 The measuring range of the node is only about 0.1V to 1.1V The voltage resolution is about 0.24mv.
415
416 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.
417
418 [[image:image-20220628150112-1.png||height="241" width="285"]]
419
420
421 When ADC_IN1 pin is connected to GND or suspended, ADC value is 0
422
423 [[image:image-20220628150714-4.png]]
424
425
426 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.
427
428
429 1) The minimum range is about 0.1V. Each chip has internal calibration, so this value is close to 0.1V
430
431 [[image:image-20220628151005-5.png]]
432
433
434 2) The maximum range is about 1.1V. Each chip has internal calibration, so this value is close to 1.1v
435
436 [[image:image-20220628151056-6.png]]
437
438
439 3) Within range
440
441 [[image:image-20220628151143-7.png]]
442
443
444
445 ==== 2.4.6.4 Ext~=2 TMP117 Sensor （Since Firmware v1.3） ====
446
447
448 [[image:image-20220927095645-1.png||height="534" width="460"]]
449
450
451 (% style="color:blue" %)**Ext=2,Temperature Sensor(TMP117)：**
452
453 [[image:image-20220906102307-7.png]]
454
455
456 (% style="color:blue" %)**Interrupt Mode and Counting Mode:**
457
458 The external cable NE2 can be use for MOD4 and MOD8
459
460
461
462 ==== 2.4.6.5 Ext~=4 Interrupt Mode （Since Firmware v1.3） ====
463
464
465 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will send an uplink when there is a trigger.**
466
467
468 (% style="color:blue" %)**Interrupt Mode can be used to connect to external interrupt sensors such as:**
469
470 (% style="color:#037691" %)**Case 1: Door Sensor.** (%%)3.3v Out for such sensor is just to detect Open/Close.
471
472 In Open State, the power consumption is the same as if there is no probe
473
474 In Close state, the power consumption will be 3uA higher than normal.
475
476 [[image:image-20220906100852-1.png||height="205" width="377"]]
477
478
479 Ext=4,Interrupt Sensor：
480
481 (% border="1.5" cellpadding="4" cellspacing="4" style="background-color:#ffffcc; color:green; height:6px; width:478px" %)
482 |(% style="width:101px" %)(((
483 AT+EXT=4,1
484 )))|(% style="width:373px" %)(((
485 Sent uplink packet in both rising and falling interrupt
486 )))
487 |(% style="width:101px" %)(((
488 AT+EXT=4,2
489 )))|(% style="width:373px" %)(((
490 Sent uplink packet only in falling interrupt
491 )))
492 |(% style="width:101px" %)(((
493 AT+EXT=4,3
494 )))|(% style="width:373px" %)(((
495 Sent uplink packet only in rising interrupt
496 )))
497
498 Trigger by falling edge:
499
500 [[image:image-20220906101145-2.png]]
501
502
503 Trigger by raising edge：
504
505 [[image:image-20220906101145-3.png]]
506
507
508
509
510 ==== 2.4.6.6 Ext~=8 Counting Mode（Since Firmware v1.3） ====
511
512
513 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will count for every interrupt and uplink periodically.**
514
515
516 (% 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.
517
518 [[image:image-20220906101320-4.png||height="366" width="698"]]
519
520
521 (% 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
522
523 [[image:image-20220906101320-5.png||height="353" width="696"]]
524
525
526 Ext=8, Counting Sensor ( 4 bytes)：
527
528 (% border="2" cellpadding="4" cellspacing="4" style="background-color:#ffffcc; color:green; height:6px; width:381px" %)
529 |(% style="width:138px" %)(((
530 AT+EXT=8,0
531 )))|(% style="width:240px" %)(((
532 Count at falling interrupt
533 )))
534 |(% style="width:138px" %)(((
535 AT+EXT=8,1
536 )))|(% style="width:240px" %)(((
537 Count at rising interrupt
538 )))
539 |(% style="width:138px" %)(((
540 AT+SETCNT=60
541 )))|(% style="width:240px" %)(((
542 Sent current count to 60
543 )))
544
545 [[image:image-20220906101320-6.png]]
546
547
548 (% style="color:blue" %)**A2 downlink Command：**
549
550 A2 02:  Same as AT+EXT=2 (AT+EXT= second byte)
551
552 A2 06 01 F4:  Same as AT+EXT=6,500 (AT+EXT= second byte, third and fourth bytes)
553
554 A2 04 02:  Same as AT+EXT=4,2 (AT+EXT= second byte, third byte)
555
556 A2 08 01 00:  Same as AT+EXT=8,0 (AT+EXT= second byte, fourth byte)
557
558 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)
559
560
561
562 == 2.5 Show data on Datacake ==
563
564
565 (((
566 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:
567 )))
568
569 (((
570
571 )))
572
573 (((
574 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the LoRaWAN network.
575 )))
576
577 (((
578 (% 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.
579 )))
580
581 (((
582
583 )))
584
585 (((
586 Add Datacake:
587 )))
588
589
590 [[image:image-20220523000825-7.png||_mstalt="429884" _mstvisible="3" height="262" width="583"]]
591
592
593
594 Select default key as Access Key:
595
596
597 [[image:image-20220523000825-8.png||_mstalt="430248" _mstvisible="3" height="453" width="406"]]
598
599
600 In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/||_mstvisible="2"]]) , add LHT65 device.
601
602
603 [[image:image-20220523000825-9.png||_mstalt="430612" _mstvisible="3" height="366" width="392"]]
604
605
606 [[image:image-20220523000825-10.png||_mstalt="450619" _mstvisible="3" height="413" width="728"]]
607
608
609
610 == 2.6 Datalog Feature ==
611
612
613 (((
614 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.
615 )))
616
617
618
619 === 2.6.1 Ways to get datalog via LoRaWAN ===
620
621
622 There are two methods:
623
624 (% style="color:blue" %)**Method 1:** (%%)IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specified time range.
625
626
627 (% 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.
628
629 (% style="color:red" %)**Note for method 2:**
630
631 * a) LHT65N will do an ACK check for data records sending to make sure every data arrive server.
632 * 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.
633
634 Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
635
636
637 [[image:image-20220703111700-2.png||height="381" width="1119"]]
638
639
640 === 2.6.2 Unix TimeStamp ===
641
642
643 LHT65N uses Unix TimeStamp format based on
644
645
646 [[image:image-20220523001219-11.png||_mstalt="450450" _mstvisible="3" height="97" width="627"]]
647
648
649
650 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/||_mstvisible="3"]] :
651
652 Below is the converter example
653
654 [[image:image-20220523001219-12.png||_mstalt="450827" _mstvisible="3" height="298" width="720"]]
655
656 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
657
658
659
660 === 2.6.3 Set Device Time ===
661
662
663 (((
664 (% style="color:blue" %)**There are two ways to set device's time:**
665 )))
666
667 (((
668 **1.  Through LoRaWAN MAC Command (Default settings)**
669 )))
670
671 (((
672 User need to set SYNCMOD=1 to enable sync time via MAC command.
673 )))
674
675 (((
676 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).
677 )))
678
679 (((
680 (% 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.**
681 )))
682
683 (((
684
685 )))
686
687 (((
688 **2. Manually Set Time**
689 )))
690
691 (((
692 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
693 )))
694
695
696
697 === 2.6.4 Poll sensor value ===
698
699
700 User can poll sensor value based on timestamps from the server. Below is the downlink command.
701
702 [[image:image-20220523152302-15.png||_mstalt="451581" _mstvisible="3"]]
703
704
705 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.
706
707 For example, downlink command **31 5FC5F350 5FC6 0160 05**
708
709 Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00’s data
710
711 Uplink Internal =5s，means LHT65N will send one packet every 5s. range 5~~255s.
712
713
714
715 === 2.6.5 Datalog Uplink payload ===
716
717
718 (% _msthash="315267" _msttexthash="2245087" _mstvisible="1" %)
719 The Datalog poll reply uplink will use below payload format.
720
721 (% _mstvisible="1" %)
722 (((
723 (% _mstvisible="2" %)
724
725
726 (% _mstvisible="2" %)
727 (% _msthash="506080" _msttexthash="451581" _mstvisible="4" %)**Retrieval data payload**
728 )))
729
730 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
731 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 93px;" %)(% _mstvisible="5" %)
732 (((
733 (% _mstvisible="6" %)
734 (((
735 (% _mstvisible="7" %)
736 (% _msthash="2224750" _msttexthash="161122" _mstvisible="9" %)**Size(bytes)**
737 )))
738 )))|=(% _mstvisible="4" style="width: 71px;" %)(% _mstvisible="5" %)
739 (((
740 (% _mstvisible="6" %)
741 (((
742 (% _mstvisible="7" %)
743 (% _msthash="2224751" _msttexthash="4550" _mstvisible="9" %)**2**
744 )))
745 )))|=(% _mstvisible="4" style="width: 102px;" %)(% _mstvisible="5" %)
746 (((
747 (% _mstvisible="6" %)
748 (((
749 (% _mstvisible="7" %)
750 (% _msthash="2224752" _msttexthash="4550" _mstvisible="9" %)**2**
751 )))
752 )))|=(% _mstvisible="4" style="width: 86px;" %)(% _mstvisible="5" %)
753 (((
754 (% _mstvisible="6" %)
755 (((
756 (% _mstvisible="7" %)
757 (% _msthash="2224753" _msttexthash="4550" _mstvisible="9" %)**2**
758 )))
759 )))|=(% _mstvisible="4" style="width: 86px;" %)(% _mstvisible="5" %)
760 (((
761 (% _mstvisible="6" %)
762 (((
763 (% _mstvisible="7" %)
764 (% _msthash="2224754" _msttexthash="4459" _mstvisible="9" %)**1**
765 )))
766 )))|=(% _mstvisible="4" style="width: 48px;" %)(% _mstvisible="5" %)
767 (((
768 (% _mstvisible="6" %)
769 (((
770 (% _mstvisible="7" %)
771 (% _msthash="2224755" _msttexthash="4732" _mstvisible="9" %)**4**
772 )))
773 )))
774 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:93px" %)(% _mstvisible="5" %)
775 (((
776 (% _mstvisible="6" %)
777 (((
778 (% _mstvisible="7" %)
779 (% _msthash="2224756" _msttexthash="60203" _mstvisible="9" %)**Value**
780 )))
781 )))|(% _mstvisible="4" style="width:71px" %)(% _mstvisible="5" %)
782 (((
783 (% _mstvisible="6" %)
784 (((
785 (% _mstvisible="7" %)
786 [[External sensor data>>||anchor="H2.4.6Extvalue" _msthash="2224757" _msttexthash="386672" _mstvisible="8"]]
787 )))
788 )))|(% _mstvisible="4" style="width:102px" %)(% _mstvisible="5" %)
789 (((
790 (% _mstvisible="6" %)
791 (((
792 (% _mstvisible="7" %)
793 (((
794 (% _mstvisible="8" %)
795 [[Built In>>||anchor="H2.4.3Built-inTemperature" _msthash="2671864" _msttexthash="91065" _mstvisible="9"]]
796 )))
797 )))
798
799 (% _mstvisible="6" %)
800 (((
801 (% _mstvisible="7" %)
802 (((
803 (% _mstvisible="8" %)
804 [[Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2671865" _msttexthash="184041" _mstvisible="9"]]
805 )))
806 )))
807 )))|(% _mstvisible="4" style="width:86px" %)(% _mstvisible="5" %)
808 (((
809 (% _mstvisible="6" %)
810 (((
811 (% _mstvisible="7" %)
812 (((
813 (% _mstvisible="8" %)
814 [[Built-in>>||anchor="H2.4.4Built-inHumidity" _msthash="2671866" _msttexthash="105872" _mstvisible="9"]]
815 )))
816 )))
817
818 (% _mstvisible="6" %)
819 (((
820 (% _mstvisible="7" %)
821 (((
822 (% _mstvisible="8" %)
823 [[Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2671867" _msttexthash="117429" _mstvisible="9"]]
824 )))
825 )))
826 )))|(% _mstvisible="4" style="width:86px" %)(% _mstvisible="5" %)
827 (((
828 (% _mstvisible="6" %)
829 (((
830 (% _msthash="2224758" _msttexthash="390390" _mstvisible="7" %)
831 Poll message flag & Ext
832 )))
833 )))|(% _mstvisible="4" style="width:48px" %)(% _mstvisible="5" %)
834 (((
835 (% _mstvisible="6" %)
836 (((
837 (% _mstvisible="7" %)
838 (((
839 (% _mstvisible="8" %)
840 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp" _msthash="2671868" _msttexthash="227175" _mstvisible="9"]]
841 )))
842 )))
843
844 (% _mstvisible="6" %)
845 (((
846 (% _mstvisible="7" %)
847 (((
848 (% _mstvisible="8" %)
849
850 )))
851 )))
852 )))
853
854 (% _mstvisible="1" %)
855 (% _msthash="315268" _msttexthash="390390" _mstvisible="3" %)**Poll message flag & Ext**
856
857 (% _mstvisible="1" %)
858 (((
859 (% _mstvisible="2" %)
860 (((
861 (% _msthash="736723" _msttexthash="2005003" _mstvisible="3" %)
862 (((
863 [[image:image-20221006192726-1.png||height="112" width="754"]]
864
865 (% class="mark" %)**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)
866
867 (% class="mark" %)**Poll Message Flag**(%%): 1: This message is a poll message reply.
868
869
870 )))
871 )))
872 )))
873
874 (% _mstvisible="1" %)
875 * (% _mstvisible="3" %)
876 (((
877 (% _mstvisible="4" %)
878 (((
879 (% _msthash="1197157" _msttexthash="561548" _mstvisible="5" %)
880 (((
881 Poll Message Flag is set to 1.
882 )))
883 )))
884 )))
885 * (% _mstvisible="3" %)
886 (((
887 (% _mstvisible="4" %)
888 (((
889 (% _msthash="1197158" _msttexthash="9284964" _mstvisible="5" %)
890 (((
891 Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
892 )))
893 )))
894 )))
895
896 (% _mstvisible="1" %)
897 (((
898 (% _mstvisible="2" %)
899 (((
900 (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
901 (((
902
903 )))
904
905 (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
906 (((
907 For example, in US915 band, the max payload for different DR is:
908 )))
909 )))
910 )))
911
912 (% _mstvisible="1" %)
913 (((
914 (% _mstvisible="2" %)
915 (((
916 (% _msthash="736725" _msttexthash="1065532" _mstvisible="3" %)
917 (((
918 **a) DR0:** max is 11 bytes so one entry of data
919 )))
920 )))
921 )))
922
923 (% _mstvisible="1" %)
924 (((
925 (% _mstvisible="2" %)
926 (((
927 (% _msthash="736726" _msttexthash="3265665" _mstvisible="3" %)
928 (((
929 **b) DR1:** max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
930 )))
931 )))
932 )))
933
934 (% _mstvisible="1" %)
935 (((
936 (% _mstvisible="2" %)
937 (((
938 (% _msthash="736727" _msttexthash="1454115" _mstvisible="3" style="text-align: left;" %)
939 (((
940 **c) DR2:** total payload includes 11 entries of data
941 )))
942 )))
943 )))
944
945 (% _mstvisible="1" %)
946 (((
947 (% _mstvisible="2" %)
948 (((
949 (% _msthash="736728" _msttexthash="1483924" _mstvisible="3" style="text-align: left;" %)
950 (((
951 **d) DR3: **total payload includes 22 entries of data.
952 )))
953 )))
954 )))
955
956 (% _mstvisible="1" %)
957 (((
958 (% _mstvisible="2" %)
959 (((
960 (% _msthash="736729" _msttexthash="5848349" _mstvisible="3" style="text-align: left;" %)
961 (((
962 If devise doesn't have any data in the polling time. Device will uplink 11 bytes of 0   
963 )))
964 )))
965 )))
966
967
968 (% _mstvisible="1" style="text-align: left;" %)
969 (% _msthash="315269" _msttexthash="104767" _mstvisible="3" %)**Example:**
970
971 (% _msthash="315270" _msttexthash="913822" _mstvisible="1" style="text-align: left;" %)
972 If LHT65N has below data inside Flash:
973
974 (% _mstvisible="1" %)
975 [[image:image-20220523144455-1.png||_mstalt="430040" _mstvisible="3" height="335" width="735"]]
976
977 (% _mstvisible="1" %)
978 (((
979 (% _msthash="506081" _msttexthash="1663961" _mstvisible="2" style="text-align: left;" %)
980 If user sends below downlink command: (% _mstvisible="3" style="background-color:yellow" %)3160065F9760066DA705
981 )))
982
983 (% _mstvisible="1" %)
984 (((
985 (% _msthash="506082" _msttexthash="1092494" _mstvisible="2" style="text-align: left;" %)
986 Where : Start time: 60065F97 = time 21/1/19 04:27:03
987 )))
988
989 (% _mstvisible="1" %)
990 (((
991 (% _msthash="506083" _msttexthash="737269" _mstvisible="2" style="text-align: left;" %)
992 Stop time 60066DA7= time 21/1/19 05:27:(% _msthash="903005" _msttexthash="9672" _mstvisible="2" %)03
993 )))
994
995 (% _mstvisible="1" %)
996 (((
997 (% _mstvisible="2" %)
998
999 )))
1000
1001 (% _mstvisible="1" %)
1002 (((
1003 (% _msthash="506084" _msttexthash="751218" _mstvisible="2" style="text-align: left;" %)
1004 LHT65N will uplink this payload.
1005 )))
1006
1007 (% _mstvisible="1" %)
1008 [[image:image-20220523001219-13.png||_mstalt="451204" _mstvisible="3" height="421" style="text-align:left" width="727"]]
1009
1010
1011 (% _msthash="315271" _msttexthash="12012546" _mstvisible="1" style="text-align: left;" %)
1012 (((
1013 7FFF089801464160065F977FFF088E014B41600660097FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
1014 )))
1015
1016 (% _msthash="315237" _msttexthash="1385839" %)
1017 (((
1018 Where the first 11 bytes is for the first entry:
1019 )))
1020
1021 (% _msthash="315238" _msttexthash="274846" %)
1022 (((
1023 7FFF089801464160065F97
1024 )))
1025
1026 (% _msthash="315239" _msttexthash="617435" %)
1027 (((
1028 Ext sensor data=0x7FFF/100=327.67
1029 )))
1030
1031 (% _msthash="315240" _msttexthash="270543" %)
1032 (((
1033 Temp=0x0898/100=22.00
1034 )))
1035
1036 (% _msthash="315241" _msttexthash="211783" %)
1037 (((
1038 Hum=0x0146/10=32.6
1039 )))
1040
1041 (% _msthash="315242" _msttexthash="1569776" %)
1042 (((
1043 poll message flag & Ext=0x41,means reply data,Ext=1
1044 )))
1045
1046 (% _msthash="315243" _msttexthash="1120509" %)
1047 (((
1048 Unix time is 0x60065F97=1611030423s=21/1/19 04:27:03
1049 )))
1050
1051
1052
1053 == 2.7 Alarm Mode ==
1054
1055
1056 (((
1057 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.
1058 )))
1059
1060 (((
1061 (% style="color:red" %)**Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.**
1062
1063
1064
1065 === 2.7.1 ALARM MODE ( Since v1.3.1 firmware) ===
1066
1067
1068 (((
1069 (% class="box infomessage" %)
1070 (((
1071 **AT+WMOD=3,**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)
1072
1073 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
1074
1075 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
1076
1077 **AT+ARTEMP=？ **:  Gets the alarm range of the internal temperature sensor(% _mstvisible="3" style="display:none" %)
1078
1079 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
1080
1081 **AT+LEDALARM=1** :       Enable LED visual Alarm.
1082 )))
1083 )))
1084
1085
1086
1087 )))
1088
1089 (((
1090 === 2.7.2 ALARM MODE ( Before v1.3.1 firmware) ===
1091
1092
1093 )))
1094
1095 (% _mstvisible="1" class="box infomessage" %)
1096 (((
1097 (((
1098 **AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)
1099 )))
1100
1101 (((
1102 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
1103 )))
1104
1105 (((
1106 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
1107 )))
1108
1109 (((
1110 **AT+ARTEMP=？ **:  Gets the alarm range of the internal temperature sensor(% _mstvisible="3" style="display:none" %)
1111 )))
1112
1113 (((
1114 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
1115 )))
1116 )))
1117
1118 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
1119
1120 Total bytes: 8 bytes
1121
1122 **Example:**AA0100010001003C
1123
1124 WMOD=01
1125
1126 CITEMP=0001
1127
1128 TEMPlow=0001
1129
1130 TEMPhigh=003C
1131
1132
1133
1134 == 2.8 LED Indicator ==
1135
1136
1137 The LHT65 has a triple color LED which for easy showing different stage .
1138
1139 While user press ACT button, the LED will work as per LED status with ACT button.
1140
1141 In a normal working state:
1142
1143 * For each uplink, the BLUE LED or RED LED will blink once.
1144 BLUE LED when external sensor is connected.
1145 * RED LED when external sensor is not connected
1146 * For each success downlink, the PURPLE LED will blink once
1147
1148 == 2.9 installation ==
1149
1150
1151 (% _mstvisible="1" %)
1152 [[image:image-20220516231650-1.png||_mstalt="428597" _mstvisible="3" height="436" width="428"]]
1153
1154
1155
1156 = 3. Sensors and Accessories =
1157
1158
1159 == 3.1 E2 Extension Cable ==
1160
1161
1162 [[image:image-20220619092222-1.png||height="182" width="188"]][[image:image-20220619092313-2.png||height="182" width="173"]]
1163
1164
1165 **1m long breakout cable for LHT65N. Features:**
1166
1167 * (((
1168 Use for AT Command， works for both LHT52/LHT65N
1169 )))
1170 * (((
1171 Update firmware for LHT65N, works for both LHT52/LHT65N
1172 )))
1173 * (((
1174 Supports ADC mode to monitor external ADC
1175 )))
1176 * (((
1177 Supports Interrupt mode
1178 )))
1179 * (((
1180 Exposed All pins from the LHT65N Type-C connector.
1181
1182
1183
1184 )))
1185
1186 [[image:image-20220619092421-3.png||height="371" width="529"]]
1187
1188
1189
1190
1191 == 3.2 E3 Temperature Probe ==
1192
1193
1194 [[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"]]
1195
1196
1197 Temperature sensor with 2 meters cable long
1198
1199 * Resolution: 0.0625 °C
1200 * ±0.5°C accuracy from -10°C to +85°C
1201 * ±2°C accuracy from -55°C to +125°C
1202 * Operating Range: -40 ~~ 125 °C
1203 * Working voltage 2.35v ~~ 5v
1204
1205 = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1206
1207
1208 (((
1209 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
1210 )))
1211
1212 * (((
1213 AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
1214 )))
1215
1216 * (((
1217 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
1218 )))
1219
1220 (((
1221 There are two kinds of commands to configure LHT65N, they are:
1222 )))
1223
1224 * (((
1225 (% style="color:#4f81bd" %)**General Commands**.
1226 )))
1227
1228 (((
1229 These commands are to configure:
1230 )))
1231
1232 1. (((
1233 General system settings like: uplink interval.
1234 )))
1235 1. (((
1236 LoRaWAN protocol & radio-related commands.
1237 )))
1238
1239 (((
1240 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]]
1241 )))
1242
1243 * (((
1244 (% style="color:#4f81bd" %)**Commands special design for LHT65N**
1245 )))
1246
1247 (((
1248 These commands are only valid for LHT65N, as below:
1249 )))
1250
1251
1252
1253 == 4.1 Set Transmit Interval Time ==
1254
1255
1256 Feature: Change LoRaWAN End Node Transmit Interval.
1257
1258
1259 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
1260
1261 [[image:image-20220523150701-2.png||_mstalt="427453" _mstvisible="3"]]
1262
1263
1264 (% style="color:#4f81bd" %)**Downlink Command: 0x01**
1265
1266 Format: Command Code (0x01) followed by 3 bytes time value.
1267
1268 If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.
1269
1270 * **Example 1**: Downlink Payload: 0100001E  ~/~/ Set Transmit Interval (TDC) = 30 seconds
1271
1272 * **Example 2**: Downlink Payload: 0100003C  ~/~/ Set Transmit Interval (TDC) = 60 seconds
1273
1274 == 4.2 Set External Sensor Mode ==
1275
1276
1277 Feature: Change External Sensor Mode.
1278
1279
1280 (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1281
1282 [[image:image-20220523150759-3.png||_mstalt="432146" _mstvisible="3"]]
1283
1284
1285 (% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1286
1287 Total bytes: 2 ~~ 5 bytes
1288
1289 **Example:**
1290
1291 * 0xA201: Set external sensor type to E1
1292
1293 * 0xA209: Same as AT+EXT=9
1294
1295 * 0xA20702003c: Same as AT+SETCNT=60
1296
1297 == 4.3 Enable/Disable uplink Temperature probe ID ==
1298
1299
1300 (((
1301 Feature: If PID is enabled, device will send the temperature probe ID on:
1302 )))
1303
1304 * (((
1305 First Packet after OTAA Join
1306 )))
1307 * (((
1308 Every 24 hours since the first packet.
1309 )))
1310
1311 (((
1312 PID is default set to disable (0)
1313
1314
1315 )))
1316
1317 (% style="color:#4f81bd" %)**AT Command:**
1318
1319 [[image:image-20220523150928-4.png||_mstalt="431821" _mstvisible="3"]]
1320
1321
1322 (% style="color:#4f81bd" %)**Downlink Command:**
1323
1324 * **0xA800**  **~-~->** AT+PID=0
1325 * **0xA801**     **~-~->** AT+PID=1
1326
1327 == 4.4 Set Password ==
1328
1329
1330 Feature: Set device password, max 9 digits
1331
1332
1333 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1334
1335 [[image:image-20220523151052-5.png||_mstalt="428623" _mstvisible="3"]]
1336
1337
1338 (% style="color:#4f81bd" %)**Downlink Command:**
1339
1340 No downlink command for this feature.
1341
1342
1343
1344 == 4.5 Quit AT Command ==
1345
1346
1347 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1348
1349
1350 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1351
1352 [[image:image-20220523151132-6.png||_mstalt="428649" _mstvisible="3"]]
1353
1354
1355 (% style="color:#4f81bd" %)**Downlink Command:**
1356
1357 No downlink command for this feature.
1358
1359
1360
1361 == 4.6 Set to sleep mode ==
1362
1363
1364 Feature: Set device to sleep mode
1365
1366 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1367 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1368
1369 (% _msthash="315251" _msttexthash="289783" style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1370
1371 [[image:image-20220523151218-7.png||_mstalt="430703" _mstvisible="3"]]
1372
1373
1374 (% _msthash="315252" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1375
1376 * There is no downlink command to set to Sleep mode.
1377
1378 == 4.7 Set system time ==
1379
1380
1381 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1382
1383
1384 (% _msthash="315253" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1385
1386 [[image:image-20220523151253-8.png||_mstalt="430677" _mstvisible="3"]]
1387
1388
1389 (% _msthash="315254" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1390
1391 0x306007806000  ~/~/  Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1392
1393
1394
1395 == 4.8 Set Time Sync Mode ==
1396
1397
1398 (((
1399 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1400 )))
1401
1402 (((
1403 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.
1404
1405
1406 )))
1407
1408 (% _msthash="506058" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1409
1410 [[image:image-20220523151336-9.png||_mstalt="431717" _mstvisible="3"]]
1411
1412
1413 (% style="color:#4f81bd" %)**Downlink Command:**
1414
1415 0x28 01  ~/~/  Same As AT+SYNCMOD=1
1416 0x28 00  ~/~/  Same As AT+SYNCMOD=0
1417
1418
1419
1420 == 4.9 Set Time Sync Interval ==
1421
1422
1423 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1424
1425
1426 (% _msthash="315256" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1427
1428 [[image:image-20220523151411-10.png||_mstalt="449696" _mstvisible="3"]]
1429
1430
1431 (% _msthash="315257" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1432
1433 **0x29 0A**  ~/~/ Same as AT+SYNCTDC=0x0A
1434
1435
1436
1437 == 4.10 Print data entries base on page. ==
1438
1439
1440 Feature: Print the sector data from start page to stop page (max is 416 pages).
1441
1442
1443 (% _msthash="315258" _msttexthash="264953" style="color:#4f81bd" %)**AT Command: AT+PDTA**
1444
1445 [[image:image-20220523151450-11.png||_mstalt="451035" _mstvisible="3"]]
1446
1447
1448 (% _msthash="315259" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1449
1450 No downlink commands for feature
1451
1452
1453
1454 == 4.11 Print last few data entries. ==
1455
1456
1457 Feature: Print the last few data entries
1458
1459
1460 (% _msthash="315260" _msttexthash="288522" style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1461
1462 [[image:image-20220523151524-12.png||_mstalt="452101" _mstvisible="3"]]
1463
1464
1465 (% _msthash="315261" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1466
1467 No downlink commands for feature
1468
1469
1470
1471 == 4.12 Clear Flash Record ==
1472
1473
1474 Feature: Clear flash storage for data log feature.
1475
1476
1477 (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1478
1479 [[image:image-20220523151556-13.png||_mstalt="454129" _mstvisible="3"]]
1480
1481
1482 (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1483
1484 * Example: 0xA301  ~/~/  Same as AT+CLRDTA
1485
1486 == 4.13 Auto Send None-ACK messages ==
1487
1488
1489 (% _msthash="315394" _msttexthash="51837149" _mstvisible="1" %)
1490 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.
1491
1492
1493 (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1494
1495 (% _msthash="315396" _msttexthash="734682" _mstvisible="1" %)
1496 The default factory setting is 0
1497
1498 (% _mstvisible="1" border="1" style="background-color:#ffffcc; color:green; width:450px" %)
1499 (% _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**
1500 (% _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
1501
1502 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1503
1504 * Example: 0x3401  ~/~/  Same as AT+PNACKMD=1
1505
1506 == 4.14 Modified ATWOOD command for external sensor TMP117 or DS18B20 temperature alarm ==
1507
1508
1509 Feature: Set internal and external temperature sensor alarms.
1510
1511 (% border="1" style="background-color:#ffffcc; color:green; width:450px" %)
1512 |(%%)(% _msthash="1231737" _msttexthash="251862" _mstvisible="6" %)**Command Example**|(%%)(% _msthash="1231738" _msttexthash="116025" _mstvisible="6" %)**Function**|(%%)(% _msthash="1231739" _msttexthash="116831" _mstvisible="6" %)**Response**
1513 |(%%)(% style="color:#037691" %)AT+WMOD=parameter1,parameter2,parameter3,parameter4|Set internal and external temperature sensor alarms|OK
1514
1515 (% style="color:#037691" %)**AT+WMOD=parameter1,parameter2,parameter3,parameter4**
1516
1517 (% style="color:#037691" %)**Parameter 1**(%%):  Alarm mode:
1518
1519 0): Cancel
1520
1521 1): Threshold alarm
1522
1523 2): Fluctuation alarm
1524
1525
1526 (% style="color:#037691" %)** Parameter 2**(%%):  Sampling time. Unit: seconds, up to 255 seconds.
1527
1528 (% 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.**
1529
1530
1531 (% style="color:#037691" %) **Parameter 3 and parameter 4:**
1532
1533 1):  If Alarm Mode is set to 1: Parameter 3 and parameter 4 are valid, as before, they represent low temperature and high temperature.
1534
1535 Such as AT+WMOD=1,60,45,105, it means high and low temperature alarm.
1536
1537
1538 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.
1539
1540 Such as AT+WMOD=2,10,2,it means that it is a fluctuation alarm.
1541
1542 If the difference between the current collected temperature and the last Uplin is ±2 degrees, the alarm will be issued.
1543
1544
1545 (% style="color:#4f81bd" %)**Downlink Command: 0xA5**
1546
1547 0xA5 00 ~-~- AT+WMOD=0.
1548
1549 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 )
1550
1551 0xA5 02 0A 02 ~-~- AT+WMOD=2,10,2  (AT+WMOD = second byte, third byte, fourth byte)
1552
1553 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.
1554
1555
1556
1557 = 5. Battery & How to replace =
1558
1559
1560 == 5.1 Battery Type ==
1561
1562
1563 (((
1564 (((
1565 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.
1566 )))
1567 )))
1568
1569 (((
1570
1571 )))
1572
1573 (((
1574 (((
1575 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1576 [[image:image-20220515075034-1.png||_mstalt="428961" _mstvisible="4" height="208" width="644"]]
1577 )))
1578 )))
1579
1580 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1581
1582
1583
1584 == 5.2 Replace Battery ==
1585
1586
1587 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.
1588
1589 [[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"]]
1590
1591
1592 == 5.3 Battery Life Analyze ==
1593
1594
1595 (((
1596 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:
1597 [[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]]
1598 )))
1599
1600 (((
1601
1602 )))
1603
1604 (((
1605 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]]
1606 )))
1607
1608
1609
1610 = 6. FAQ =
1611
1612
1613 == 6.1 How to use AT Command? ==
1614
1615
1616 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.
1617
1618 [[image:image-20220530085651-1.png||_mstalt="429949"]]
1619
1620
1621 (% _msthash="506061" _msttexthash="170755" %)**Connection:**
1622
1623 * (% style="background-color:yellow" %)**USB to TTL GND <~-~->GND**
1624 * (% style="background-color:yellow" %)**USB to TTL RXD <~-~-> D+**
1625 * (% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1626
1627 (((
1628 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.
1629 )))
1630
1631
1632 Input password and ATZ to activate LHT65N,As shown below:
1633
1634 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1635
1636
1637 (% _msthash="506066" _msttexthash="544869" %)
1638 AT Command List is as below:
1639
1640 (% _msthash="506067" _msttexthash="361920" %)
1641 AT+<CMD>? :  Help on <CMD>
1642
1643 (% _msthash="506068" _msttexthash="243061" %)
1644 AT+<CMD> :  Run <CMD>
1645
1646 (% _msthash="506069" _msttexthash="704197" %)
1647 AT+<CMD>=<value> :  Set the value
1648
1649 (% _msthash="506070" _msttexthash="455676" %)
1650 AT+<CMD>=? :  Get the value
1651
1652 (% _msthash="506071" _msttexthash="670553" %)
1653 AT+DEBUG:  Set more info output
1654
1655 (% _msthash="506072" _msttexthash="485888" %)
1656 ATZ:  Trig a reset of the MCU
1657
1658 (% _msthash="506073" _msttexthash="2068872" %)
1659 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1660
1661 (% _msthash="506074" _msttexthash="689169" %)
1662 AT+DEUI:  Get or Set the Device EUI
1663
1664 (% _msthash="506075" _msttexthash="960414" %)
1665 AT+DADDR:  Get or Set the Device Address
1666
1667 (% _msthash="506076" _msttexthash="1079897" %)
1668 AT+APPKEY:  Get or Set the Application Key
1669
1670 (% _msthash="506077" _msttexthash="1326143" %)
1671 AT+NWKSKEY:  Get or Set the Network Session Key
1672
1673 (% _msthash="506078" _msttexthash="1573000" %)
1674 AT+APPSKEY:  Get or Set the Application Session Key
1675
1676 (% _msthash="506079" _msttexthash="1041729" %)
1677 AT+APPEUI:  Get or Set the Application EUI
1678
1679 (% _msthash="506080" _msttexthash="2104206" %)
1680 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1681
1682 (% _msthash="506081" _msttexthash="3369288" %)
1683 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1684
1685 (% _msthash="506082" _msttexthash="1894529" %)
1686 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1687
1688 (% _msthash="506083" _msttexthash="3864172" %)
1689 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1690
1691 (% _msthash="506084" _msttexthash="1712204" %)
1692 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1693
1694 (% _msthash="506085" _msttexthash="1281202" %)
1695 AT+RX2FQ:  Get or Set the Rx2 window frequency
1696
1697 (% _msthash="506086" _msttexthash="2796781" %)
1698 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1699
1700 (% _msthash="506087" _msttexthash="3285165" %)
1701 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1702
1703 (% _msthash="506088" _msttexthash="3286179" %)
1704 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1705
1706 (% _msthash="506089" _msttexthash="4703803" %)
1707 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1708
1709 (% _msthash="506090" _msttexthash="4704999" %)
1710 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1711
1712 (% _msthash="506091" _msttexthash="1528683" %)
1713 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1714
1715 (% _msthash="506092" _msttexthash="757185" %)
1716 AT+NWKID:  Get or Set the Network ID
1717
1718 (% _msthash="506093" _msttexthash="1156597" %)
1719 AT+FCU:  Get or Set the Frame Counter Uplink
1720
1721 (% _msthash="506094" _msttexthash="1273987" %)
1722 AT+FCD:  Get or Set the Frame Counter Downlink
1723
1724 (% _msthash="506095" _msttexthash="859222" %)
1725 AT+CLASS:  Get or Set the Device Class
1726
1727 (% _msthash="506096" _msttexthash="384852" %)
1728 AT+JOIN:  Join network
1729
1730 (% _msthash="506097" _msttexthash="548626" %)
1731 AT+NJS:  Get the join status
1732
1733 (% _msthash="506098" _msttexthash="2546206" %)
1734 AT+SENDB:  Send hexadecimal data along with the application port
1735
1736 (% _msthash="506099" _msttexthash="1932307" %)
1737 AT+SEND:  Send text data along with the application port
1738
1739 (% _msthash="506100" _msttexthash="3560557" %)
1740 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
1741
1742 (% _msthash="506101" _msttexthash="1429701" %)
1743 AT+RECV:  Print last received data in raw format
1744
1745 (% _msthash="506102" _msttexthash="1735981" %)
1746 AT+VER:  Get current image version and Frequency Band
1747
1748 (% _msthash="506103" _msttexthash="1189474" %)
1749 AT+CFM:  Get or Set the confirmation mode (0-1)
1750
1751 (% _msthash="506104" _msttexthash="1718210" %)
1752 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1753
1754 (% _msthash="506105" _msttexthash="1339403" %)
1755 AT+SNR:  Get the SNR of the last received packet
1756
1757 (% _msthash="506106" _msttexthash="1452009" %)
1758 AT+RSSI:  Get the RSSI of the last received packet
1759
1760 (% _msthash="506107" _msttexthash="2768142" %)
1761 AT+TDC:  Get or set the application data transmission interval in ms
1762
1763 (% _msthash="506108" _msttexthash="1083914" %)
1764 AT+PORT:  Get or set the application port
1765
1766 (% _msthash="506109" _msttexthash="622440" %)
1767 AT+DISAT:  Disable AT commands
1768
1769 (% _msthash="506110" _msttexthash="868361" %)
1770 AT+PWORD: Set password, max 9 digits
1771
1772 (% _msthash="506111" _msttexthash="2210299" %)
1773 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
1774
1775 (% _msthash="506112" _msttexthash="2113462" %)
1776 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
1777
1778 (% _msthash="506113" _msttexthash="2087423" %)
1779 AT+PDTA:  Print the sector data from start page to stop page
1780
1781 (% _msthash="506114" _msttexthash="1063127" %)
1782 AT+PLDTA:  Print the last few sets of data
1783
1784 (% _msthash="506115" _msttexthash="1999426" %)
1785 AT+CLRDTA:  Clear the storage, record position back to 1st
1786
1787 (% _msthash="506116" _msttexthash="442130" %)
1788 AT+SLEEP:  Set sleep mode
1789
1790 (% _msthash="506117" _msttexthash="1080222" %)
1791 AT+EXT:  Get or Set external sensor model
1792
1793 (% _msthash="506118" _msttexthash="1309490" %)
1794 AT+BAT:  Get the current battery voltage in mV
1795
1796 (% _msthash="506119" _msttexthash="813891" %)
1797 AT+CFG:  Print all configurations
1798
1799 (% _msthash="506120" _msttexthash="551707" %)
1800 AT+WMOD:  Get or Set Work Mode
1801
1802 (% _msthash="506121" _msttexthash="2631499" %)
1803 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
1804
1805 (% _msthash="506122" _msttexthash="3907150" %)
1806 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
1807
1808 (% _msthash="506123" _msttexthash="854620" %)
1809 AT+SETCNT:  Set the count at present
1810
1811 (% _msthash="506124" _msttexthash="2554877" %)
1812 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
1813
1814 (% _msthash="506125" _msttexthash="771849" %)
1815 AT+RPL:  Get or set response level
1816
1817 (% _msthash="506126" _msttexthash="1484314" %)
1818 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
1819
1820 (% _msthash="506127" _msttexthash="741728" %)
1821 AT+LEAPSEC:  Get or Set Leap Second
1822
1823 (% _msthash="506128" _msttexthash="1694017" %)
1824 AT+SYNCMOD:  Get or Set time synchronization method
1825
1826 (% _msthash="506129" _msttexthash="2235948" %)
1827 AT+SYNCTDC:  Get or set time synchronization interval in day
1828
1829 (% _msthash="506130" _msttexthash="425542" %)
1830 AT+PID:  Get or set the PID
1831
1832
1833
1834 == 6.2 Where to use AT commands and Downlink commands ==
1835
1836
1837 **AT commands：**
1838
1839 [[image:image-20220620153708-1.png||height="603" width="723"]]
1840
1841
1842 **Downlink commands:**
1843
1844
1845
1846 (% style="color:blue" %)**TTN:**
1847
1848 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
1849
1850
1851
1852 (% style="color:blue" %)**Helium：**
1853
1854 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
1855
1856
1857
1858 (% style="color:blue" %)**Chirpstack: The downlink window will not be displayed until the network is accessed**
1859
1860
1861 [[image:image-20220615094850-6.png||_mstalt="433082"]]
1862
1863
1864 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
1865
1866
1867
1868 (% style="color:blue" %)**Aws:**
1869
1870 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1871
1872
1873
1874 == 6.3 How to change the uplink interval？ ==
1875
1876
1877 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);"]]
1878
1879
1880
1881 == 6.4 How to use TTL-USB to connect a PC to input AT commands? ==
1882
1883
1884 [[image:image-20220615153355-1.png]]
1885
1886 [[image:1655802313617-381.png]]
1887
1888
1889 (((
1890 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.
1891 )))
1892
1893
1894 Input password and ATZ to activate LHT65N,As shown below:
1895
1896 [[image:image-20220615154519-3.png||height="672" width="807"]]
1897
1898
1899
1900 == 6.5 How to use TTL-USB to connect PC to upgrade firmware? ==
1901
1902
1903 [[image:image-20220615153355-1.png]]
1904
1905
1906 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1907
1908 [[image:image-20220615170542-5.png]]
1909
1910
1911
1912 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1913
1914 (% _msthash="506146" _msttexthash="52173160" %)
1915 First connect the four lines；(% style="display:none" %)
1916
1917 [[image:image-20220621170938-1.png||height="413" width="419"]](% _mstvisible="1" %)，(% style="display:none" %)
1918
1919
1920 (% _mstvisible="1" %)Then use DuPont cable to short circuit port3 and port1, and then release them, so that the device enters bootlaod mode.
1921
1922 [[image:image-20220621170938-2.png]]
1923
1924
1925
1926 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1927
1928 [[image:image-20220615171334-6.png]]
1929
1930
1931 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1932
1933
1934 When this interface appears, it indicates that the download has been completed.
1935
1936 [[image:image-20220620160723-8.png]]
1937
1938
1939 Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
1940
1941
1942
1943 == 6.6 Using USB-TYPE-C to connect to the computer using the AT command ==
1944
1945
1946 [[image:image-20220623110706-1.png]]
1947
1948
1949 [[image:image-20220623112117-4.png||height="459" width="343"]]
1950
1951
1952 (((
1953 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.
1954 )))
1955
1956
1957 Input password and ATZ to activate LHT65N,As shown below:
1958
1959 [[image:image-20220615154519-3.png||height="672" width="807"]]
1960
1961
1962
1963 == 6.7 How to use  USB-TYPE-C to connect PC to upgrade firmware? ==
1964
1965
1966 [[image:image-20220623110706-1.png]]
1967
1968
1969 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1970
1971 [[image:image-20220615170542-5.png]]
1972
1973
1974
1975 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1976
1977 (% _msthash="506146" _msttexthash="52173160" %)
1978 First connect the four lines；
1979
1980 (% _msthash="506146" _msttexthash="52173160" %)
1981 [[image:image-20220623113959-5.png||height="528" width="397"]]
1982
1983 (% _msthash="506146" _msttexthash="52173160" %)
1984 Press and hold the start key to restart and enter  (% _mstvisible="1" %)bootlaod(%%) mode.
1985
1986
1987
1988 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1989
1990 [[image:image-20220615171334-6.png]]
1991
1992
1993 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1994
1995
1996 When this interface appears, it indicates that the download has been completed.
1997
1998 [[image:image-20220620160723-8.png]]
1999
2000
2001 Finally,restart reset device again
2002
2003
2004
2005 = 7. Order Info =
2006
2007
2008 Part Number: (% _mstvisible="4" style="color:#4f81bd" %)** LHT65N-XX-YY**
2009
2010 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
2011
2012 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
2013 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
2014 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
2015 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
2016 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
2017 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**US915**(%%): LoRaWAN US915 band
2018 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
2019 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
2020
2021 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
2022
2023 * (% style="color:red" %)**E3**(%%): External Temperature Probe
2024
2025 = 8. Packing Info =
2026
2027
2028 **Package Includes**:
2029
2030 * LHT65N Temperature & Humidity Sensor x 1
2031 * Optional external sensor
2032
2033 **Dimension and weight**:
2034
2035 * Device Size:  10 x 10 x 3.5 cm
2036 * Device Weight: 120.5g
2037
2038 = 9. Reference material =
2039
2040
2041 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
2042
2043 = 10. FCC Warning =
2044
2045
2046 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
2047
2048 (1) This device may not cause harmful interference；
2049
2050 (2) this device must accept any interference received, including interference that may cause undesired operation.
2051
2052
2053