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Version 210.11 by Xiaoling on 2022/10/26 17:02
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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:480px" %)
715 |=(% style="width: 60px;" %)(((
716 **Size(bytes)**
717 )))|=(% style="width: 90px;" %)**2**|=(% style="width: 90px;" %)**2**|=(% style="width: 70px;" %)**2**|=(% style="width: 100px;" %)**1**|=(% style="width: 70px;" %)**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 **Poll message flag & Ext:**
721
722
723 [[image:image-20221006192726-1.png||height="112" width="754"]]
724
725 (% 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)
726
727 (% style="color:blue" %)**Poll Message Flag**(%%): 1: This message is a poll message reply.
728
729 * Poll Message Flag is set to 1.
730
731 * Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
732
733
734 For example, in US915 band, the max payload for different DR is:
735
736 (% style="color:blue" %)**a) DR0:** (%%)max is 11 bytes so one entry of data
737
738 (% style="color:blue" %)**b) DR1:**(%%) max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
739
740 (% style="color:blue" %)**c) DR2:**(%%) total payload includes 11 entries of data
741
742 (% style="color:blue" %)**d) DR3: **(%%)total payload includes 22 entries of data.
743
744 If devise doesn't have any data in the polling time. Device will uplink 11 bytes of 0   
745
746
747 **Example:**
748
749 If LHT65N has below data inside Flash:
750
751 [[image:image-20220523144455-1.png||_mstalt="430040" _mstvisible="3" height="335" width="735"]]
752
753
754 If user sends below downlink command: (% style="background-color:yellow" %)3160065F9760066DA705
755
756 Where : Start time: 60065F97 = time 21/1/19 04:27:03
757
758 Stop time: 60066DA7= time 21/1/19 05:27:03
759
760
761 **LHT65N will uplink this payload.**
762
763 [[image:image-20220523001219-13.png||_mstalt="451204" _mstvisible="3" height="421" style="text-align:left" width="727"]]
764
765
766 7FFF089801464160065F977FFF088E014B41600660097FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
767
768 Where the first 11 bytes is for the first entry:
769
770 7FFF089801464160065F97
771
772 Ext sensor data=0x7FFF/100=327.67
773
774 Temp=0x0898/100=22.00
775
776 Hum=0x0146/10=32.6
777
778 poll message flag & Ext=0x41,means reply data,Ext=1
779
780 Unix time is 0x60065F97=1611030423s=21/1/19 04:27:03
781
782
783
784 == 2.7 Alarm Mode ==
785
786
787 (((
788 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.
789 )))
790
791 (((
792 (% style="color:red" %)**Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.**
793
794
795
796 === 2.7.1 ALARM MODE ( Since v1.3.1 firmware) ===
797
798
799 (((
800 (% class="box infomessage" %)
801 (((
802 **AT+WMOD=3,**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)
803
804 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
805
806 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
807
808 **AT+ARTEMP=？ **:  Gets the alarm range of the internal temperature sensor(% _mstvisible="3" style="display:none" %)
809
810 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
811
812 **AT+LEDALARM=1** :       Enable LED visual Alarm.
813 )))
814 )))
815
816
817
818 )))
819
820 (((
821 === 2.7.2 ALARM MODE ( Before v1.3.1 firmware) ===
822
823
824 )))
825
826 (% _mstvisible="1" class="box infomessage" %)
827 (((
828 (((
829 **AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)
830 )))
831
832 (((
833 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
834 )))
835
836 (((
837 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
838 )))
839
840 (((
841 **AT+ARTEMP=？ **:  Gets the alarm range of the internal temperature sensor(% _mstvisible="3" style="display:none" %)
842 )))
843
844 (((
845 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
846 )))
847 )))
848
849 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
850
851 Total bytes: 8 bytes
852
853 **Example:**AA0100010001003C
854
855 WMOD=01
856
857 CITEMP=0001
858
859 TEMPlow=0001
860
861 TEMPhigh=003C
862
863
864
865 == 2.8 LED Indicator ==
866
867
868 The LHT65 has a triple color LED which for easy showing different stage .
869
870 While user press ACT button, the LED will work as per LED status with ACT button.
871
872 In a normal working state:
873
874 * For each uplink, the BLUE LED or RED LED will blink once.
875 BLUE LED when external sensor is connected.
876 * RED LED when external sensor is not connected
877 * For each success downlink, the PURPLE LED will blink once
878
879 == 2.9 installation ==
880
881
882 (% _mstvisible="1" %)
883 [[image:image-20220516231650-1.png||_mstalt="428597" _mstvisible="3" height="436" width="428"]]
884
885
886
887 = 3. Sensors and Accessories =
888
889
890 == 3.1 E2 Extension Cable ==
891
892
893 [[image:image-20220619092222-1.png||height="182" width="188"]][[image:image-20220619092313-2.png||height="182" width="173"]]
894
895
896 **1m long breakout cable for LHT65N. Features:**
897
898 * (((
899 Use for AT Command， works for both LHT52/LHT65N
900 )))
901 * (((
902 Update firmware for LHT65N, works for both LHT52/LHT65N
903 )))
904 * (((
905 Supports ADC mode to monitor external ADC
906 )))
907 * (((
908 Supports Interrupt mode
909 )))
910 * (((
911 Exposed All pins from the LHT65N Type-C connector.
912
913
914
915 )))
916
917 [[image:image-20220619092421-3.png||height="371" width="529"]]
918
919
920
921
922 == 3.2 E3 Temperature Probe ==
923
924
925 [[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"]]
926
927
928 Temperature sensor with 2 meters cable long
929
930 * Resolution: 0.0625 °C
931 * ±0.5°C accuracy from -10°C to +85°C
932 * ±2°C accuracy from -55°C to +125°C
933 * Operating Range: -40 ~~ 125 °C
934 * Working voltage 2.35v ~~ 5v
935
936 = 4. Configure LHT65N via AT command or LoRaWAN downlink =
937
938
939 (((
940 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
941 )))
942
943 * (((
944 AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
945 )))
946
947 * (((
948 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
949 )))
950
951 (((
952 There are two kinds of commands to configure LHT65N, they are:
953 )))
954
955 * (((
956 (% style="color:#4f81bd" %)**General Commands**.
957 )))
958
959 (((
960 These commands are to configure:
961 )))
962
963 1. (((
964 General system settings like: uplink interval.
965 )))
966 1. (((
967 LoRaWAN protocol & radio-related commands.
968 )))
969
970 (((
971 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]]
972 )))
973
974 * (((
975 (% style="color:#4f81bd" %)**Commands special design for LHT65N**
976 )))
977
978 (((
979 These commands are only valid for LHT65N, as below:
980 )))
981
982
983
984 == 4.1 Set Transmit Interval Time ==
985
986
987 Feature: Change LoRaWAN End Node Transmit Interval.
988
989
990 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
991
992 [[image:image-20220523150701-2.png||_mstalt="427453" _mstvisible="3"]]
993
994
995 (% style="color:#4f81bd" %)**Downlink Command: 0x01**
996
997 Format: Command Code (0x01) followed by 3 bytes time value.
998
999 If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.
1000
1001 * **Example 1**: Downlink Payload: 0100001E  ~/~/ Set Transmit Interval (TDC) = 30 seconds
1002
1003 * **Example 2**: Downlink Payload: 0100003C  ~/~/ Set Transmit Interval (TDC) = 60 seconds
1004
1005 == 4.2 Set External Sensor Mode ==
1006
1007
1008 Feature: Change External Sensor Mode.
1009
1010
1011 (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1012
1013 [[image:image-20220523150759-3.png||_mstalt="432146" _mstvisible="3"]]
1014
1015
1016 (% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1017
1018 Total bytes: 2 ~~ 5 bytes
1019
1020 **Example:**
1021
1022 * 0xA201: Set external sensor type to E1
1023
1024 * 0xA209: Same as AT+EXT=9
1025
1026 * 0xA20702003c: Same as AT+SETCNT=60
1027
1028 == 4.3 Enable/Disable uplink Temperature probe ID ==
1029
1030
1031 (((
1032 Feature: If PID is enabled, device will send the temperature probe ID on:
1033 )))
1034
1035 * (((
1036 First Packet after OTAA Join
1037 )))
1038 * (((
1039 Every 24 hours since the first packet.
1040 )))
1041
1042 (((
1043 PID is default set to disable (0)
1044
1045
1046 )))
1047
1048 (% style="color:#4f81bd" %)**AT Command:**
1049
1050 [[image:image-20220523150928-4.png||_mstalt="431821" _mstvisible="3"]]
1051
1052
1053 (% style="color:#4f81bd" %)**Downlink Command:**
1054
1055 * **0xA800**  **~-~->** AT+PID=0
1056 * **0xA801**     **~-~->** AT+PID=1
1057
1058 == 4.4 Set Password ==
1059
1060
1061 Feature: Set device password, max 9 digits
1062
1063
1064 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1065
1066 [[image:image-20220523151052-5.png||_mstalt="428623" _mstvisible="3"]]
1067
1068
1069 (% style="color:#4f81bd" %)**Downlink Command:**
1070
1071 No downlink command for this feature.
1072
1073
1074
1075 == 4.5 Quit AT Command ==
1076
1077
1078 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1079
1080
1081 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1082
1083 [[image:image-20220523151132-6.png||_mstalt="428649" _mstvisible="3"]]
1084
1085
1086 (% style="color:#4f81bd" %)**Downlink Command:**
1087
1088 No downlink command for this feature.
1089
1090
1091
1092 == 4.6 Set to sleep mode ==
1093
1094
1095 Feature: Set device to sleep mode
1096
1097 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1098 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1099
1100 (% _msthash="315251" _msttexthash="289783" style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1101
1102 [[image:image-20220523151218-7.png||_mstalt="430703" _mstvisible="3"]]
1103
1104
1105 (% _msthash="315252" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1106
1107 * There is no downlink command to set to Sleep mode.
1108
1109 == 4.7 Set system time ==
1110
1111
1112 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1113
1114
1115 (% _msthash="315253" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1116
1117 [[image:image-20220523151253-8.png||_mstalt="430677" _mstvisible="3"]]
1118
1119
1120 (% _msthash="315254" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1121
1122 0x306007806000  ~/~/  Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1123
1124
1125
1126 == 4.8 Set Time Sync Mode ==
1127
1128
1129 (((
1130 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1131 )))
1132
1133 (((
1134 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.
1135
1136
1137 )))
1138
1139 (% _msthash="506058" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1140
1141 [[image:image-20220523151336-9.png||_mstalt="431717" _mstvisible="3"]]
1142
1143
1144 (% style="color:#4f81bd" %)**Downlink Command:**
1145
1146 0x28 01  ~/~/  Same As AT+SYNCMOD=1
1147 0x28 00  ~/~/  Same As AT+SYNCMOD=0
1148
1149
1150
1151 == 4.9 Set Time Sync Interval ==
1152
1153
1154 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1155
1156
1157 (% _msthash="315256" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1158
1159 [[image:image-20220523151411-10.png||_mstalt="449696" _mstvisible="3"]]
1160
1161
1162 (% _msthash="315257" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1163
1164 **0x29 0A**  ~/~/ Same as AT+SYNCTDC=0x0A
1165
1166
1167
1168 == 4.10 Print data entries base on page. ==
1169
1170
1171 Feature: Print the sector data from start page to stop page (max is 416 pages).
1172
1173
1174 (% _msthash="315258" _msttexthash="264953" style="color:#4f81bd" %)**AT Command: AT+PDTA**
1175
1176 [[image:image-20220523151450-11.png||_mstalt="451035" _mstvisible="3"]]
1177
1178
1179 (% _msthash="315259" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1180
1181 No downlink commands for feature
1182
1183
1184
1185 == 4.11 Print last few data entries. ==
1186
1187
1188 Feature: Print the last few data entries
1189
1190
1191 (% _msthash="315260" _msttexthash="288522" style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1192
1193 [[image:image-20220523151524-12.png||_mstalt="452101" _mstvisible="3"]]
1194
1195
1196 (% _msthash="315261" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1197
1198 No downlink commands for feature
1199
1200
1201
1202 == 4.12 Clear Flash Record ==
1203
1204
1205 Feature: Clear flash storage for data log feature.
1206
1207
1208 (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1209
1210 [[image:image-20220523151556-13.png||_mstalt="454129" _mstvisible="3"]]
1211
1212
1213 (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1214
1215 * Example: 0xA301  ~/~/  Same as AT+CLRDTA
1216
1217
1218
1219 == 4.13 Auto Send None-ACK messages ==
1220
1221
1222 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.
1223
1224
1225 (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1226
1227 The default factory setting is 0
1228
1229 (% border="1" style="background-color:#ffffcc; color:green; width:240px" %)
1230 |=(% _mstvisible="4" style="width: 70px;" %)**Command Example**|=(% style="width: 120px;" %)**Function**|=(% style="width: 50px;" %)**Response**
1231 |(% style="width:171px" %)AT+PNACKMD=1|(% style="width:219px" %)Poll None-ACK message|(% style="width:88px" %)OK
1232
1233 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1234
1235 * Example: 0x3401  ~/~/  Same as AT+PNACKMD=1
1236
1237
1238
1239
1240 == 4.14 Modified ATWOOD command for external sensor TMP117 or DS18B20 temperature alarm ==
1241
1242
1243 Feature: Set internal and external temperature sensor alarms.
1244
1245 (% border="1" style="background-color:#ffffcc; color:green; width:500px" %)
1246 |(% style="width:350px" %)**Command Example**|(% style="width:100px" %)**Function**|(% style="width:50px" %)**Response**
1247 |(% style="width:271px" %)AT+WMOD=parameter1,parameter2,parameter3,parameter4|(% style="width:462px" %)Set internal and external temperature sensor alarms|(% style="width:181px" %)OK
1248
1249
1250 (% style="color:#037691" %)**AT+WMOD=parameter1,parameter2,parameter3,parameter4**
1251
1252 (% style="color:#037691" %)**Parameter 1**(%%):  Alarm mode:
1253
1254 0): Cancel
1255
1256 1): Threshold alarm
1257
1258 2): Fluctuation alarm
1259
1260
1261 (% style="color:#037691" %)** Parameter 2**(%%):  Sampling time. Unit: seconds, up to 255 seconds.
1262
1263 (% 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.**
1264
1265
1266 (% style="color:#037691" %) **Parameter 3 and parameter 4:**
1267
1268 1):  If Alarm Mode is set to 1: Parameter 3 and parameter 4 are valid, as before, they represent low temperature and high temperature.
1269
1270 Such as AT+WMOD=1,60,45,105, it means high and low temperature alarm.
1271
1272
1273 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.
1274
1275 Such as AT+WMOD=2,10,2,it means that it is a fluctuation alarm.
1276
1277 If the difference between the current collected temperature and the last Uplin is ±2 degrees, the alarm will be issued.
1278
1279
1280 (% style="color:#4f81bd" %)**Downlink Command: 0xA5**
1281
1282 0xA5 00 ~-~- AT+WMOD=0.
1283
1284 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 )
1285
1286 0xA5 02 0A 02 ~-~- AT+WMOD=2,10,2  (AT+WMOD = second byte, third byte, fourth byte)
1287
1288 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.
1289
1290
1291
1292 = 5. Battery & How to replace =
1293
1294
1295 == 5.1 Battery Type ==
1296
1297
1298 (((
1299 (((
1300 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.
1301 )))
1302 )))
1303
1304 (((
1305
1306 )))
1307
1308 (((
1309 (((
1310 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1311 [[image:image-20220515075034-1.png||_mstalt="428961" _mstvisible="4" height="208" width="644"]]
1312 )))
1313 )))
1314
1315 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1316
1317
1318
1319 == 5.2 Replace Battery ==
1320
1321
1322 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.
1323
1324 [[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"]]
1325
1326
1327 == 5.3 Battery Life Analyze ==
1328
1329
1330 (((
1331 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:
1332 [[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]]
1333 )))
1334
1335 (((
1336
1337 )))
1338
1339 (((
1340 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]]
1341 )))
1342
1343
1344
1345 = 6. FAQ =
1346
1347
1348 == 6.1 How to use AT Command? ==
1349
1350
1351 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.
1352
1353 [[image:image-20220530085651-1.png||_mstalt="429949"]]
1354
1355
1356 (% _msthash="506061" _msttexthash="170755" %)**Connection:**
1357
1358 * (% style="background-color:yellow" %)**USB to TTL GND <~-~->GND**
1359 * (% style="background-color:yellow" %)**USB to TTL RXD <~-~-> D+**
1360 * (% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1361
1362 (((
1363 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.
1364 )))
1365
1366
1367 Input password and ATZ to activate LHT65N,As shown below:
1368
1369 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1370
1371
1372 (% _msthash="506066" _msttexthash="544869" %)
1373 AT Command List is as below:
1374
1375 (% _msthash="506067" _msttexthash="361920" %)
1376 AT+<CMD>? :  Help on <CMD>
1377
1378 (% _msthash="506068" _msttexthash="243061" %)
1379 AT+<CMD> :  Run <CMD>
1380
1381 (% _msthash="506069" _msttexthash="704197" %)
1382 AT+<CMD>=<value> :  Set the value
1383
1384 (% _msthash="506070" _msttexthash="455676" %)
1385 AT+<CMD>=? :  Get the value
1386
1387 (% _msthash="506071" _msttexthash="670553" %)
1388 AT+DEBUG:  Set more info output
1389
1390 (% _msthash="506072" _msttexthash="485888" %)
1391 ATZ:  Trig a reset of the MCU
1392
1393 (% _msthash="506073" _msttexthash="2068872" %)
1394 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1395
1396 (% _msthash="506074" _msttexthash="689169" %)
1397 AT+DEUI:  Get or Set the Device EUI
1398
1399 (% _msthash="506075" _msttexthash="960414" %)
1400 AT+DADDR:  Get or Set the Device Address
1401
1402 (% _msthash="506076" _msttexthash="1079897" %)
1403 AT+APPKEY:  Get or Set the Application Key
1404
1405 (% _msthash="506077" _msttexthash="1326143" %)
1406 AT+NWKSKEY:  Get or Set the Network Session Key
1407
1408 (% _msthash="506078" _msttexthash="1573000" %)
1409 AT+APPSKEY:  Get or Set the Application Session Key
1410
1411 (% _msthash="506079" _msttexthash="1041729" %)
1412 AT+APPEUI:  Get or Set the Application EUI
1413
1414 (% _msthash="506080" _msttexthash="2104206" %)
1415 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1416
1417 (% _msthash="506081" _msttexthash="3369288" %)
1418 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1419
1420 (% _msthash="506082" _msttexthash="1894529" %)
1421 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1422
1423 (% _msthash="506083" _msttexthash="3864172" %)
1424 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1425
1426 (% _msthash="506084" _msttexthash="1712204" %)
1427 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1428
1429 (% _msthash="506085" _msttexthash="1281202" %)
1430 AT+RX2FQ:  Get or Set the Rx2 window frequency
1431
1432 (% _msthash="506086" _msttexthash="2796781" %)
1433 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1434
1435 (% _msthash="506087" _msttexthash="3285165" %)
1436 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1437
1438 (% _msthash="506088" _msttexthash="3286179" %)
1439 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1440
1441 (% _msthash="506089" _msttexthash="4703803" %)
1442 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1443
1444 (% _msthash="506090" _msttexthash="4704999" %)
1445 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1446
1447 (% _msthash="506091" _msttexthash="1528683" %)
1448 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1449
1450 (% _msthash="506092" _msttexthash="757185" %)
1451 AT+NWKID:  Get or Set the Network ID
1452
1453 (% _msthash="506093" _msttexthash="1156597" %)
1454 AT+FCU:  Get or Set the Frame Counter Uplink
1455
1456 (% _msthash="506094" _msttexthash="1273987" %)
1457 AT+FCD:  Get or Set the Frame Counter Downlink
1458
1459 (% _msthash="506095" _msttexthash="859222" %)
1460 AT+CLASS:  Get or Set the Device Class
1461
1462 (% _msthash="506096" _msttexthash="384852" %)
1463 AT+JOIN:  Join network
1464
1465 (% _msthash="506097" _msttexthash="548626" %)
1466 AT+NJS:  Get the join status
1467
1468 (% _msthash="506098" _msttexthash="2546206" %)
1469 AT+SENDB:  Send hexadecimal data along with the application port
1470
1471 (% _msthash="506099" _msttexthash="1932307" %)
1472 AT+SEND:  Send text data along with the application port
1473
1474 (% _msthash="506100" _msttexthash="3560557" %)
1475 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
1476
1477 (% _msthash="506101" _msttexthash="1429701" %)
1478 AT+RECV:  Print last received data in raw format
1479
1480 (% _msthash="506102" _msttexthash="1735981" %)
1481 AT+VER:  Get current image version and Frequency Band
1482
1483 (% _msthash="506103" _msttexthash="1189474" %)
1484 AT+CFM:  Get or Set the confirmation mode (0-1)
1485
1486 (% _msthash="506104" _msttexthash="1718210" %)
1487 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1488
1489 (% _msthash="506105" _msttexthash="1339403" %)
1490 AT+SNR:  Get the SNR of the last received packet
1491
1492 (% _msthash="506106" _msttexthash="1452009" %)
1493 AT+RSSI:  Get the RSSI of the last received packet
1494
1495 (% _msthash="506107" _msttexthash="2768142" %)
1496 AT+TDC:  Get or set the application data transmission interval in ms
1497
1498 (% _msthash="506108" _msttexthash="1083914" %)
1499 AT+PORT:  Get or set the application port
1500
1501 (% _msthash="506109" _msttexthash="622440" %)
1502 AT+DISAT:  Disable AT commands
1503
1504 (% _msthash="506110" _msttexthash="868361" %)
1505 AT+PWORD: Set password, max 9 digits
1506
1507 (% _msthash="506111" _msttexthash="2210299" %)
1508 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
1509
1510 (% _msthash="506112" _msttexthash="2113462" %)
1511 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
1512
1513 (% _msthash="506113" _msttexthash="2087423" %)
1514 AT+PDTA:  Print the sector data from start page to stop page
1515
1516 (% _msthash="506114" _msttexthash="1063127" %)
1517 AT+PLDTA:  Print the last few sets of data
1518
1519 (% _msthash="506115" _msttexthash="1999426" %)
1520 AT+CLRDTA:  Clear the storage, record position back to 1st
1521
1522 (% _msthash="506116" _msttexthash="442130" %)
1523 AT+SLEEP:  Set sleep mode
1524
1525 (% _msthash="506117" _msttexthash="1080222" %)
1526 AT+EXT:  Get or Set external sensor model
1527
1528 (% _msthash="506118" _msttexthash="1309490" %)
1529 AT+BAT:  Get the current battery voltage in mV
1530
1531 (% _msthash="506119" _msttexthash="813891" %)
1532 AT+CFG:  Print all configurations
1533
1534 (% _msthash="506120" _msttexthash="551707" %)
1535 AT+WMOD:  Get or Set Work Mode
1536
1537 (% _msthash="506121" _msttexthash="2631499" %)
1538 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
1539
1540 (% _msthash="506122" _msttexthash="3907150" %)
1541 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
1542
1543 (% _msthash="506123" _msttexthash="854620" %)
1544 AT+SETCNT:  Set the count at present
1545
1546 (% _msthash="506124" _msttexthash="2554877" %)
1547 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
1548
1549 (% _msthash="506125" _msttexthash="771849" %)
1550 AT+RPL:  Get or set response level
1551
1552 (% _msthash="506126" _msttexthash="1484314" %)
1553 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
1554
1555 (% _msthash="506127" _msttexthash="741728" %)
1556 AT+LEAPSEC:  Get or Set Leap Second
1557
1558 (% _msthash="506128" _msttexthash="1694017" %)
1559 AT+SYNCMOD:  Get or Set time synchronization method
1560
1561 (% _msthash="506129" _msttexthash="2235948" %)
1562 AT+SYNCTDC:  Get or set time synchronization interval in day
1563
1564 (% _msthash="506130" _msttexthash="425542" %)
1565 AT+PID:  Get or set the PID
1566
1567
1568
1569 == 6.2 Where to use AT commands and Downlink commands ==
1570
1571
1572 **AT commands：**
1573
1574 [[image:image-20220620153708-1.png||height="603" width="723"]]
1575
1576
1577 **Downlink commands:**
1578
1579
1580
1581 (% style="color:blue" %)**TTN:**
1582
1583 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
1584
1585
1586
1587 (% style="color:blue" %)**Helium：**
1588
1589 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
1590
1591
1592
1593 (% style="color:blue" %)**Chirpstack: The downlink window will not be displayed until the network is accessed**
1594
1595
1596 [[image:image-20220615094850-6.png||_mstalt="433082"]]
1597
1598
1599 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
1600
1601
1602
1603 (% style="color:blue" %)**Aws:**
1604
1605 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1606
1607
1608
1609 == 6.3 How to change the uplink interval？ ==
1610
1611
1612 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);"]]
1613
1614
1615
1616 == 6.4 How to use TTL-USB to connect a PC to input AT commands? ==
1617
1618
1619 [[image:image-20220615153355-1.png]]
1620
1621 [[image:1655802313617-381.png]]
1622
1623
1624 (((
1625 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.
1626 )))
1627
1628
1629 Input password and ATZ to activate LHT65N,As shown below:
1630
1631 [[image:image-20220615154519-3.png||height="672" width="807"]]
1632
1633
1634
1635 == 6.5 How to use TTL-USB to connect PC to upgrade firmware? ==
1636
1637
1638 [[image:image-20220615153355-1.png]]
1639
1640
1641 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1642
1643 [[image:image-20220615170542-5.png]]
1644
1645
1646
1647 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1648
1649 (% _msthash="506146" _msttexthash="52173160" %)
1650 First connect the four lines；(% style="display:none" %)
1651
1652 [[image:image-20220621170938-1.png||height="413" width="419"]](% _mstvisible="1" %)，(% style="display:none" %)
1653
1654
1655 (% _mstvisible="1" %)Then use DuPont cable to short circuit port3 and port1, and then release them, so that the device enters bootlaod mode.
1656
1657 [[image:image-20220621170938-2.png]]
1658
1659
1660
1661 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1662
1663 [[image:image-20220615171334-6.png]]
1664
1665
1666 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1667
1668
1669 When this interface appears, it indicates that the download has been completed.
1670
1671 [[image:image-20220620160723-8.png]]
1672
1673
1674 Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
1675
1676
1677
1678 == 6.6 Using USB-TYPE-C to connect to the computer using the AT command ==
1679
1680
1681 [[image:image-20220623110706-1.png]]
1682
1683
1684 [[image:image-20220623112117-4.png||height="459" width="343"]]
1685
1686
1687 (((
1688 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.
1689 )))
1690
1691
1692 Input password and ATZ to activate LHT65N,As shown below:
1693
1694 [[image:image-20220615154519-3.png||height="672" width="807"]]
1695
1696
1697
1698 == 6.7 How to use  USB-TYPE-C to connect PC to upgrade firmware? ==
1699
1700
1701 [[image:image-20220623110706-1.png]]
1702
1703
1704 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1705
1706 [[image:image-20220615170542-5.png]]
1707
1708
1709
1710 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1711
1712 (% _msthash="506146" _msttexthash="52173160" %)
1713 First connect the four lines；
1714
1715 (% _msthash="506146" _msttexthash="52173160" %)
1716 [[image:image-20220623113959-5.png||height="528" width="397"]]
1717
1718 (% _msthash="506146" _msttexthash="52173160" %)
1719 Press and hold the start key to restart and enter  (% _mstvisible="1" %)bootlaod(%%) mode.
1720
1721
1722
1723 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1724
1725 [[image:image-20220615171334-6.png]]
1726
1727
1728 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1729
1730
1731 When this interface appears, it indicates that the download has been completed.
1732
1733 [[image:image-20220620160723-8.png]]
1734
1735
1736 Finally,restart reset device again
1737
1738
1739
1740 = 7. Order Info =
1741
1742
1743 Part Number: (% _mstvisible="4" style="color:#4f81bd" %)** LHT65N-XX-YY**
1744
1745 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
1746
1747 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
1748 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
1749 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
1750 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
1751 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
1752 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**US915**(%%): LoRaWAN US915 band
1753 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
1754 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
1755
1756 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
1757
1758 * (% style="color:red" %)**E3**(%%): External Temperature Probe
1759
1760 = 8. Packing Info =
1761
1762
1763 **Package Includes**:
1764
1765 * LHT65N Temperature & Humidity Sensor x 1
1766 * Optional external sensor
1767
1768 **Dimension and weight**:
1769
1770 * Device Size:  10 x 10 x 3.5 cm
1771 * Device Weight: 120.5g
1772
1773 = 9. Reference material =
1774
1775
1776 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
1777
1778 = 10. FCC Warning =
1779
1780
1781 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
1782
1783 (1) This device may not cause harmful interference；
1784
1785 (2) this device must accept any interference received, including interference that may cause undesired operation.
1786
1787
1788