Version 210.16 by Xiaoling on 2022/10/26 17:34
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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
65
66 == 1.3 Specification ==
67
68
69 (% style="color:#037691" %)**Built-in Temperature Sensor:**
70
71 * Resolution: 0.01 °C
72 * Accuracy Tolerance : Typ ±0.3 °C
73 * Long Term Drift: < 0.02 °C/yr
74 * Operating Range: -40 ~~ 85 °C
75
76 (% style="color:#037691" %)**Built-in Humidity Sensor:**
77
78 * Resolution: 0.04 %RH
79 * Accuracy Tolerance : Typ ±3 %RH
80 * Long Term Drift: < 0.02 °C/yr
81 * Operating Range: 0 ~~ 96 %RH
82
83 (% style="color:#037691" %)**External Temperature Sensor:**
84
85 * Resolution: 0.0625 °C
86 * ±0.5°C accuracy from -10°C to +85°C
87 * ±2°C accuracy from -55°C to +125°C
88 * Operating Range: -55 °C ~~ 125 °C
89
90
91
92 = 2. Connect LHT65N to IoT Server =
93
94
95 == 2.1 How does LHT65N work? ==
96
97
98 (((
99 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.
100 )))
101
102 (((
103 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.
104 )))
105
106
107
108 == 2.2 How to Activate LHT65N? ==
109
110
111 (((
112 The LHT65N has two working modes:
113 )))
114
115 * (((
116 (% 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.
117 )))
118 * (((
119 (% 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. 
120 )))
121
122 (((
123 The LHT65N is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
124 )))
125
126
127 [[image:image-20220515123819-1.png||_mstalt="430742" _mstvisible="3" height="379" width="317"]]
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129 [[image:image-20220525110604-2.png||_mstalt="427531" _mstvisible="3"]]
130
131
132
133 == 2.3 Example to join LoRaWAN network ==
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136 (% _msthash="315240" _msttexthash="9205482" _mstvisible="1" class="wikigeneratedid" %)
137 This section shows an example of how to join the TTN V3 LoRaWAN IoT server. Use with other LoRaWAN IoT servers is of a similar procedure.
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140 (% _mstvisible="1" class="wikigeneratedid" %)
141 [[image:image-20220522232442-1.png||_mstalt="427830" _mstvisible="3" height="387" width="648"]]
142
143
144 (((
145 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:
146 )))
147
148
149
150 === 2.3.1 Step 1: Create Device n TTN ===
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152
153 (((
154 Create a device in TTN V3 with the OTAA keys from LHT65N.
155 )))
156
157 (((
158 Each LHT65N is shipped with a sticker with its device EUI, APP Key and APP EUI as below:
159 )))
160
161 [[image:image-20220617150003-1.jpeg]]
162
163 User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:
164
165 Add APP EUI in the application.
166
167
168 [[image:image-20220522232916-3.png||_mstalt="430495" _mstvisible="3"]]
169
170
171 [[image:image-20220522232932-4.png||_mstalt="430157" _mstvisible="3"]]
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174 [[image:image-20220522232954-5.png||_mstalt="431847" _mstvisible="3"]]
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177
178 (% style="color:red" %)**Note: LHT65N use same payload as LHT65.**
179
180
181 [[image:image-20220522233026-6.png||_mstalt="429403" _mstvisible="3"]]
182
183
184 Input APP EUI,  APP KEY and DEV EUI:
185
186
187 [[image:image-20220522233118-7.png||_mstalt="430430" _mstvisible="3"]]
188
189
190
191
192 === 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
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194
195 (((
196 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.
197 )))
198
199 [[image:image-20220522233300-8.png||_mstalt="428389" _mstvisible="3" height="219" width="722"]]
200
201
202
203 == 2.4 Uplink Payload   ( Fport~=2) ==
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205
206 (((
207 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.
208 )))
209
210 (((
211 After each uplink, the (% _mstvisible="3" style="color:blue" %)**BLUE LED**(%%) will blink once.
212 )))
213
214 (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:390px" %)
215 |=(% style="width: 60px;" %)(((
216 **Size(bytes)**
217 )))|=(% style="width: 30px;" %)(((
218 **2**
219 )))|=(% style="width: 100px;" %)(((
220 **2**
221 )))|=(% style="width: 100px;" %)(((
222 **2**
223 )))|=(% style="width: 50px;" %)(((
224 **1**
225 )))|=(% style="width: 50px;" %)(((
226 **4**
227 )))
228 |(% style="width:97px" %)(((
229 **Value**
230 )))|(% style="width:39px" %)(((
231 [[BAT>>||anchor="H2.4.2BAT-BatteryInfo"]]
232 )))|(% style="width:100px" %)(((
233 (((
234 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
235 )))
236 )))|(% style="width:77px" %)(((
237 (((
238 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
239 )))
240 )))|(% style="width:47px" %)(((
241 [[Ext>>||anchor="H2.4.5Ext23"]] #
242 )))|(% style="width:51px" %)(((
243 [[Ext value>>||anchor="H2.4.6Extvalue"]]
244 )))
245
246 * The First 6 bytes: has fix meanings for every LHT65N.
247 * The 7th byte (EXT #): defines the external sensor model.
248 * 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.)
249
250
251
252 === 2.4.1 Decoder in TTN V3 ===
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254
255 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.
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257 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]]
258
259
260 [[image:image-20220522234118-10.png||_mstalt="451464" _mstvisible="3" height="353" width="729"]]
261
262
263
264 === 2.4.2 BAT-Battery Info ===
265
266
267 These two bytes of BAT include the battery state and the actually voltage
268
269 [[image:image-20220523152839-18.png||_mstalt="457613" _mstvisible="3"]]
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271
272 [[image:image-20220522235639-1.png||_mstalt="431392" _mstvisible="3" height="139" width="727"]]
273
274
275 Check the battery voltage for LHT65N.
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277 * BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
278 * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
279
280
281
282 === 2.4.3 Built-in Temperature ===
283
284
285 [[image:image-20220522235639-2.png||_mstalt="431756" _mstvisible="3" height="138" width="722"]]
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287 * Temperature:  0x0ABB/100=27.47℃
288
289 [[image:image-20220522235639-3.png||_mstalt="432120" _mstvisible="3"]]
290
291 * Temperature:  (0xF5C6-65536)/100=-26.18℃
292
293
294
295 === 2.4.4 Built-in Humidity ===
296
297
298 [[image:image-20220522235639-4.png||_mstalt="432484" _mstvisible="3" height="138" width="722"]]
299
300 * Humidity:    0x025C/10=60.4%
301
302
303
304 === 2.4.5 Ext # ===
305
306
307 Bytes for External Sensor:
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309 [[image:image-20220523152822-17.png||_mstalt="454545" _mstvisible="3"]]
310
311
312
313 === 2.4.6 Ext value ===
314
315
316 ==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
317
318
319 [[image:image-20220522235639-5.png||_mstalt="432848" _mstvisible="3"]]
320
321
322 * DS18B20 temp=0x0ADD/100=27.81℃
323
324 The last 2 bytes of data are meaningless
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326
327
328 [[image:image-20220522235639-6.png||_mstalt="433212" _mstvisible="3"]]
329
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331 * External temperature= (0xF54F-65536)/100=-27.37℃
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333 The last 2 bytes of data are meaningless
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335 If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
336
337
338
339 ==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
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341
342 (((
343 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:
344 )))
345
346 (((
347
348 )))
349
350 (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:480px" %)
351 |=(% style="width: 50px;" %)(((
352 **Size(bytes)**
353 )))|=(% style="width: 70px;" %)(((
354 **2**
355 )))|=(% style="width: 120px;" %)(((
356 **2**
357 )))|=(% style="width: 120px;" %)(((
358 **2**
359 )))|=(% style="width: 50px;" %)(((
360 **1**
361 )))|=(% style="width: 70px;" %)(((
362 **4**
363 )))
364 |(% style="width:110px" %)(((
365 **Value**
366 )))|(% style="width:71px" %)(((
367 [[External temperature>>||anchor="H4.2SetExternalSensorMode"]]
368 )))|(% style="width:99px" %)(((
369 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
370 )))|(% style="width:132px" %)(((
371 BAT Status & [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
372 )))|(% style="width:54px" %)(((
373 Status & Ext
374 )))|(% style="width:64px" %)(((
375 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp"]]
376 )))
377
378
379 * **Battery status & Built-in Humidity**
380
381 (% _mstvisible="1" border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:461px" %)
382 |=(% style="width: 67px;" %)Bit(bit)|=(% style="width: 256px;" %)[15:14]|=(% style="width: 132px;" %)[11:0]
383 |(% style="width:67px" %)Value|(% style="width:256px" %)(((
384 BAT Status
385 00(b): Ultra Low ( BAT <= 2.50v)
386 01(b): Low  (2.50v <=BAT <= 2.55v)
387 10(b): OK   (2.55v <= BAT <=2.65v)
388 11(b): Good   (BAT >= 2.65v)
389 )))|(% style="width:132px" %)(((
390 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
391 )))
392
393
394 * **Status & Ext Byte**
395
396 (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:500px" %)
397 |=(% 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]**
398 |=(% 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)
399
400 * (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
401 * (% 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.
402 * (% 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)
403
404
405
406 ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
407
408
409 In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
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411 be used to power the external ADC sensor; user can control the power on time for this
412
413 (% style="color:blue" %)**sensor by setting:**
414
415 **AT+EXT=6,timeout**  (% _msthash="506085" _msttexthash="8782189" _mstvisible="3" style="color:red" %)**Time to power this sensor, from 0 ~~ 65535ms**
416
417 **For example:**
418
419 AT+EXT=6,1000 will power this sensor for 1000ms before sampling the ADC value.
420
421
422 Or use **downlink command A2** to set the same.
423
424 The measuring range of the node is only about 0.1V to 1.1V The voltage resolution is about 0.24mv.
425
426 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.
427
428 [[image:image-20220628150112-1.png||height="241" width="285"]]
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431 When ADC_IN1 pin is connected to GND or suspended, ADC value is 0
432
433 [[image:image-20220628150714-4.png]]
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436 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.
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439 1) The minimum range is about 0.1V. Each chip has internal calibration, so this value is close to 0.1V
440
441 [[image:image-20220628151005-5.png]]
442
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444 2) The maximum range is about 1.1V. Each chip has internal calibration, so this value is close to 1.1v
445
446 [[image:image-20220628151056-6.png]]
447
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449 3) Within range
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451 [[image:image-20220628151143-7.png]]
452
453
454
455 ==== 2.4.6.4 Ext~=2 TMP117 Sensor （Since Firmware v1.3） ====
456
457
458 [[image:image-20220927095645-1.png||height="534" width="460"]]
459
460
461 (% style="color:blue" %)**Ext=2,Temperature Sensor(TMP117)：**
462
463 [[image:image-20220906102307-7.png]]
464
465
466 (% style="color:blue" %)**Interrupt Mode and Counting Mode:**
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468 The external cable NE2 can be use for MOD4 and MOD8
469
470
471
472 ==== 2.4.6.5 Ext~=4 Interrupt Mode （Since Firmware v1.3） ====
473
474
475 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will send an uplink when there is a trigger.**
476
477
478 (% style="color:blue" %)**Interrupt Mode can be used to connect to external interrupt sensors such as:**
479
480 (% style="color:#037691" %)**Case 1: Door Sensor.** (%%)3.3v Out for such sensor is just to detect Open/Close.
481
482 In Open State, the power consumption is the same as if there is no probe
483
484 In Close state, the power consumption will be 3uA higher than normal.
485
486 [[image:image-20220906100852-1.png||height="205" width="377"]]
487
488
489 Ext=4,Interrupt Sensor：
490
491 (% border="1.5" cellpadding="4" cellspacing="4" style="background-color:#ffffcc; color:green; height:6px; width:478px" %)
492 |(% style="width:101px" %)(((
493 AT+EXT=4,1
494 )))|(% style="width:373px" %)(((
495 Sent uplink packet in both rising and falling interrupt
496 )))
497 |(% style="width:101px" %)(((
498 AT+EXT=4,2
499 )))|(% style="width:373px" %)(((
500 Sent uplink packet only in falling interrupt
501 )))
502 |(% style="width:101px" %)(((
503 AT+EXT=4,3
504 )))|(% style="width:373px" %)(((
505 Sent uplink packet only in rising interrupt
506 )))
507
508 Trigger by falling edge:
509
510 [[image:image-20220906101145-2.png]]
511
512
513 Trigger by raising edge：
514
515 [[image:image-20220906101145-3.png]]
516
517
518
519
520 ==== 2.4.6.6 Ext~=8 Counting Mode（Since Firmware v1.3） ====
521
522
523 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will count for every interrupt and uplink periodically.**
524
525
526 (% 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.
527
528 [[image:image-20220906101320-4.png||height="366" width="698"]]
529
530
531 (% 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
532
533 [[image:image-20220906101320-5.png||height="353" width="696"]]
534
535
536 Ext=8, Counting Sensor ( 4 bytes)：
537
538 (% border="2" cellpadding="4" cellspacing="4" style="background-color:#ffffcc; color:green; height:6px; width:381px" %)
539 |(% style="width:138px" %)(((
540 AT+EXT=8,0
541 )))|(% style="width:240px" %)(((
542 Count at falling interrupt
543 )))
544 |(% style="width:138px" %)(((
545 AT+EXT=8,1
546 )))|(% style="width:240px" %)(((
547 Count at rising interrupt
548 )))
549 |(% style="width:138px" %)(((
550 AT+SETCNT=60
551 )))|(% style="width:240px" %)(((
552 Sent current count to 60
553 )))
554
555 [[image:image-20220906101320-6.png]]
556
557
558 (% style="color:blue" %)**A2 downlink Command：**
559
560 A2 02:  Same as AT+EXT=2 (AT+EXT= second byte)
561
562 A2 06 01 F4:  Same as AT+EXT=6,500 (AT+EXT= second byte, third and fourth bytes)
563
564 A2 04 02:  Same as AT+EXT=4,2 (AT+EXT= second byte, third byte)
565
566 A2 08 01 00:  Same as AT+EXT=8,0 (AT+EXT= second byte, fourth byte)
567
568 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)
569
570
571
572 == 2.5 Show data on Datacake ==
573
574
575 (((
576 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:
577 )))
578
579 (((
580
581 )))
582
583 (((
584 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the LoRaWAN network.
585 )))
586
587 (((
588 (% 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.
589 )))
590
591 (((
592
593 )))
594
595 (((
596 Add Datacake:
597 )))
598
599
600 [[image:image-20220523000825-7.png||_mstalt="429884" _mstvisible="3" height="262" width="583"]]
601
602
603
604 Select default key as Access Key:
605
606
607 [[image:image-20220523000825-8.png||_mstalt="430248" _mstvisible="3" height="453" width="406"]]
608
609
610 In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/||_mstvisible="2"]]) , add LHT65 device.
611
612
613 [[image:image-20220523000825-9.png||_mstalt="430612" _mstvisible="3" height="366" width="392"]]
614
615
616 [[image:image-20220523000825-10.png||_mstalt="450619" _mstvisible="3" height="413" width="728"]]
617
618
619
620 == 2.6 Datalog Feature ==
621
622
623 (((
624 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.
625 )))
626
627
628
629 === 2.6.1 Ways to get datalog via LoRaWAN ===
630
631
632 There are two methods:
633
634 (% style="color:blue" %)**Method 1:** (%%)IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specified time range.
635
636
637 (% 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.
638
639 (% style="color:red" %)**Note for method 2:**
640
641 * a) LHT65N will do an ACK check for data records sending to make sure every data arrive server.
642 * 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.
643
644 Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
645
646
647 [[image:image-20220703111700-2.png||height="381" width="1119"]]
648
649
650
651 === 2.6.2 Unix TimeStamp ===
652
653
654 LHT65N uses Unix TimeStamp format based on
655
656
657 [[image:image-20220523001219-11.png||_mstalt="450450" _mstvisible="3" height="97" width="627"]]
658
659
660
661 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/||_mstvisible="3"]] :
662
663 Below is the converter example
664
665 [[image:image-20220523001219-12.png||_mstalt="450827" _mstvisible="3" height="298" width="720"]]
666
667 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
668
669
670
671 === 2.6.3 Set Device Time ===
672
673
674 (((
675 (% style="color:blue" %)**There are two ways to set device's time:**
676 )))
677
678 (((
679 **1.  Through LoRaWAN MAC Command (Default settings)**
680 )))
681
682 (((
683 User need to set SYNCMOD=1 to enable sync time via MAC command.
684 )))
685
686 (((
687 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).
688 )))
689
690 (((
691 (% 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.**
692 )))
693
694 (((
695
696 )))
697
698 (((
699 **2. Manually Set Time**
700 )))
701
702 (((
703 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
704 )))
705
706
707
708 === 2.6.4 Poll sensor value ===
709
710
711 User can poll sensor value based on timestamps from the server. Below is the downlink command.
712
713 [[image:image-20220523152302-15.png||_mstalt="451581" _mstvisible="3"]]
714
715
716 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.
717
718 For example, downlink command **31 5FC5F350 5FC6 0160 05**
719
720 Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00’s data
721
722 Uplink Internal =5s，means LHT65N will send one packet every 5s. range 5~~255s.
723
724
725
726 === 2.6.5 Datalog Uplink payload ===
727
728
729 The Datalog poll reply uplink will use below payload format.
730
731 **Retrieval data payload:**
732
733 (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:480px" %)
734 |=(% style="width: 60px;" %)(((
735 **Size(bytes)**
736 )))|=(% style="width: 90px;" %)**2**|=(% style="width: 90px;" %)**2**|=(% style="width: 70px;" %)**2**|=(% style="width: 100px;" %)**1**|=(% style="width: 70px;" %)**4**
737 |(% 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"]]
738
739
740 **Poll message flag & Ext:**
741
742 [[image:image-20221006192726-1.png||height="112" width="754"]]
743
744 (% 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)
745
746 (% style="color:blue" %)**Poll Message Flag**(%%): 1: This message is a poll message reply.
747
748 * Poll Message Flag is set to 1.
749
750 * Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
751
752
753 For example, in US915 band, the max payload for different DR is:
754
755 (% style="color:blue" %)**a) DR0:** (%%)max is 11 bytes so one entry of data
756
757 (% style="color:blue" %)**b) DR1:**(%%) max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
758
759 (% style="color:blue" %)**c) DR2:**(%%) total payload includes 11 entries of data
760
761 (% style="color:blue" %)**d) DR3: **(%%)total payload includes 22 entries of data.
762
763 If devise doesn't have any data in the polling time. Device will uplink 11 bytes of 0   
764
765
766 **Example:**
767
768 If LHT65N has below data inside Flash:
769
770 [[image:image-20220523144455-1.png||_mstalt="430040" _mstvisible="3" height="335" width="735"]]
771
772
773 If user sends below downlink command: (% style="background-color:yellow" %)3160065F9760066DA705
774
775 Where : Start time: 60065F97 = time 21/1/19 04:27:03
776
777 Stop time: 60066DA7= time 21/1/19 05:27:03
778
779
780 **LHT65N will uplink this payload.**
781
782 [[image:image-20220523001219-13.png||_mstalt="451204" _mstvisible="3" height="421" style="text-align:left" width="727"]]
783
784
785 __**7FFF089801464160065F97**__ **__7FFF__ __088E__ __014B__ __41__ __60066009__** 7FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
786
787 Where the first 11 bytes is for the first entry:
788
789 7FFF089801464160065F97
790
791 Ext sensor data=0x7FFF/100=327.67
792
793 Temp=0x088E/100=22.00
794
795 Hum=0x014B/10=32.6
796
797 poll message flag & Ext=0x41,means reply data,Ext=1
798
799 Unix time is 0x60066009=1611030423s=21/1/19 04:27:03
800
801
802
803 == 2.7 Alarm Mode ==
804
805
806 (((
807 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.
808 )))
809
810 (((
811 (% style="color:red" %)**Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.**
812
813
814
815 === 2.7.1 ALARM MODE ( Since v1.3.1 firmware) ===
816
817
818 (((
819 (% class="box infomessage" %)
820 (((
821 **AT+WMOD=3,**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)
822
823 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
824
825 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
826
827 **AT+ARTEMP=？ **:  Gets the alarm range of the internal temperature sensor(% _mstvisible="3" style="display:none" %)
828
829 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
830
831 **AT+LEDALARM=1** :       Enable LED visual Alarm.
832 )))
833 )))
834
835
836
837 )))
838
839 (((
840 === 2.7.2 ALARM MODE ( Before v1.3.1 firmware) ===
841
842
843 )))
844
845 (% _mstvisible="1" class="box infomessage" %)
846 (((
847 (((
848 **AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)
849 )))
850
851 (((
852 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
853 )))
854
855 (((
856 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
857 )))
858
859 (((
860 **AT+ARTEMP=？ **:  Gets the alarm range of the internal temperature sensor(% _mstvisible="3" style="display:none" %)
861 )))
862
863 (((
864 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
865 )))
866 )))
867
868 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
869
870 Total bytes: 8 bytes
871
872 **Example:**AA0100010001003C
873
874 WMOD=01
875
876 CITEMP=0001
877
878 TEMPlow=0001
879
880 TEMPhigh=003C
881
882
883
884 == 2.8 LED Indicator ==
885
886
887 The LHT65 has a triple color LED which for easy showing different stage .
888
889 While user press ACT button, the LED will work as per LED status with ACT button.
890
891 In a normal working state:
892
893 * For each uplink, the BLUE LED or RED LED will blink once.
894 BLUE LED when external sensor is connected.
895 * RED LED when external sensor is not connected
896 * For each success downlink, the PURPLE LED will blink once
897
898
899
900 == 2.9 installation ==
901
902
903 (% _mstvisible="1" %)
904 [[image:image-20220516231650-1.png||_mstalt="428597" _mstvisible="3" height="436" width="428"]]
905
906
907
908 = 3. Sensors and Accessories =
909
910
911 == 3.1 E2 Extension Cable ==
912
913
914 [[image:image-20220619092222-1.png||height="182" width="188"]][[image:image-20220619092313-2.png||height="182" width="173"]]
915
916
917 **1m long breakout cable for LHT65N. Features:**
918
919 * (((
920 Use for AT Command， works for both LHT52/LHT65N
921 )))
922 * (((
923 Update firmware for LHT65N, works for both LHT52/LHT65N
924 )))
925 * (((
926 Supports ADC mode to monitor external ADC
927 )))
928 * (((
929 Supports Interrupt mode
930 )))
931 * (((
932 Exposed All pins from the LHT65N Type-C connector.
933
934
935
936 )))
937
938 [[image:image-20220619092421-3.png||height="371" width="529"]]
939
940
941
942
943 == 3.2 E3 Temperature Probe ==
944
945
946 [[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"]]
947
948
949 Temperature sensor with 2 meters cable long
950
951 * Resolution: 0.0625 °C
952 * ±0.5°C accuracy from -10°C to +85°C
953 * ±2°C accuracy from -55°C to +125°C
954 * Operating Range: -40 ~~ 125 °C
955 * Working voltage 2.35v ~~ 5v
956
957
958
959 = 4. Configure LHT65N via AT command or LoRaWAN downlink =
960
961
962 (((
963 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
964 )))
965
966 * (((
967 AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
968 )))
969
970 * (((
971 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
972 )))
973
974 (((
975 There are two kinds of commands to configure LHT65N, they are:
976 )))
977
978 * (((
979 (% style="color:#4f81bd" %)**General Commands**.
980 )))
981
982 (((
983 These commands are to configure:
984 )))
985
986 1. (((
987 General system settings like: uplink interval.
988 )))
989 1. (((
990 LoRaWAN protocol & radio-related commands.
991 )))
992
993 (((
994 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]]
995 )))
996
997 * (((
998 (% style="color:#4f81bd" %)**Commands special design for LHT65N**
999 )))
1000
1001 (((
1002 These commands are only valid for LHT65N, as below:
1003 )))
1004
1005
1006
1007 == 4.1 Set Transmit Interval Time ==
1008
1009
1010 Feature: Change LoRaWAN End Node Transmit Interval.
1011
1012
1013 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
1014
1015 [[image:image-20220523150701-2.png||_mstalt="427453" _mstvisible="3"]]
1016
1017
1018 (% style="color:#4f81bd" %)**Downlink Command: 0x01**
1019
1020 Format: Command Code (0x01) followed by 3 bytes time value.
1021
1022 If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.
1023
1024 * **Example 1**: Downlink Payload: 0100001E  ~/~/ Set Transmit Interval (TDC) = 30 seconds
1025
1026 * **Example 2**: Downlink Payload: 0100003C  ~/~/ Set Transmit Interval (TDC) = 60 seconds
1027
1028
1029
1030 == 4.2 Set External Sensor Mode ==
1031
1032
1033 Feature: Change External Sensor Mode.
1034
1035
1036 (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1037
1038 [[image:image-20220523150759-3.png||_mstalt="432146" _mstvisible="3"]]
1039
1040
1041 (% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1042
1043 Total bytes: 2 ~~ 5 bytes
1044
1045 **Example:**
1046
1047 * 0xA201: Set external sensor type to E1
1048
1049 * 0xA209: Same as AT+EXT=9
1050
1051 * 0xA20702003c: Same as AT+SETCNT=60
1052
1053
1054
1055 == 4.3 Enable/Disable uplink Temperature probe ID ==
1056
1057
1058 (((
1059 Feature: If PID is enabled, device will send the temperature probe ID on:
1060 )))
1061
1062 * (((
1063 First Packet after OTAA Join
1064 )))
1065 * (((
1066 Every 24 hours since the first packet.
1067 )))
1068
1069 (((
1070 PID is default set to disable (0)
1071
1072
1073 )))
1074
1075 (% style="color:#4f81bd" %)**AT Command:**
1076
1077 [[image:image-20220523150928-4.png||_mstalt="431821" _mstvisible="3"]]
1078
1079
1080 (% style="color:#4f81bd" %)**Downlink Command:**
1081
1082 * **0xA800**  **~-~->** AT+PID=0
1083 * **0xA801**     **~-~->** AT+PID=1
1084
1085
1086
1087 == 4.4 Set Password ==
1088
1089
1090 Feature: Set device password, max 9 digits
1091
1092
1093 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1094
1095 [[image:image-20220523151052-5.png||_mstalt="428623" _mstvisible="3"]]
1096
1097
1098 (% style="color:#4f81bd" %)**Downlink Command:**
1099
1100 No downlink command for this feature.
1101
1102
1103
1104 == 4.5 Quit AT Command ==
1105
1106
1107 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1108
1109
1110 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1111
1112 [[image:image-20220523151132-6.png||_mstalt="428649" _mstvisible="3"]]
1113
1114
1115 (% style="color:#4f81bd" %)**Downlink Command:**
1116
1117 No downlink command for this feature.
1118
1119
1120
1121 == 4.6 Set to sleep mode ==
1122
1123
1124 Feature: Set device to sleep mode
1125
1126 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1127 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1128
1129 (% _msthash="315251" _msttexthash="289783" style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1130
1131 [[image:image-20220523151218-7.png||_mstalt="430703" _mstvisible="3"]]
1132
1133
1134 (% _msthash="315252" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1135
1136 * There is no downlink command to set to Sleep mode.
1137
1138
1139
1140 == 4.7 Set system time ==
1141
1142
1143 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1144
1145
1146 (% _msthash="315253" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1147
1148 [[image:image-20220523151253-8.png||_mstalt="430677" _mstvisible="3"]]
1149
1150
1151 (% _msthash="315254" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1152
1153 0x306007806000  ~/~/  Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1154
1155
1156
1157 == 4.8 Set Time Sync Mode ==
1158
1159
1160 (((
1161 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1162 )))
1163
1164 (((
1165 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.
1166
1167
1168 )))
1169
1170 (% _msthash="506058" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1171
1172 [[image:image-20220523151336-9.png||_mstalt="431717" _mstvisible="3"]]
1173
1174
1175 (% style="color:#4f81bd" %)**Downlink Command:**
1176
1177 0x28 01  ~/~/  Same As AT+SYNCMOD=1
1178 0x28 00  ~/~/  Same As AT+SYNCMOD=0
1179
1180
1181
1182 == 4.9 Set Time Sync Interval ==
1183
1184
1185 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1186
1187
1188 (% _msthash="315256" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1189
1190 [[image:image-20220523151411-10.png||_mstalt="449696" _mstvisible="3"]]
1191
1192
1193 (% _msthash="315257" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1194
1195 **0x29 0A**  ~/~/ Same as AT+SYNCTDC=0x0A
1196
1197
1198
1199 == 4.10 Print data entries base on page. ==
1200
1201
1202 Feature: Print the sector data from start page to stop page (max is 416 pages).
1203
1204
1205 (% _msthash="315258" _msttexthash="264953" style="color:#4f81bd" %)**AT Command: AT+PDTA**
1206
1207 [[image:image-20220523151450-11.png||_mstalt="451035" _mstvisible="3"]]
1208
1209
1210 (% _msthash="315259" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1211
1212 No downlink commands for feature
1213
1214
1215
1216 == 4.11 Print last few data entries. ==
1217
1218
1219 Feature: Print the last few data entries
1220
1221
1222 (% _msthash="315260" _msttexthash="288522" style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1223
1224 [[image:image-20220523151524-12.png||_mstalt="452101" _mstvisible="3"]]
1225
1226
1227 (% _msthash="315261" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1228
1229 No downlink commands for feature
1230
1231
1232
1233 == 4.12 Clear Flash Record ==
1234
1235
1236 Feature: Clear flash storage for data log feature.
1237
1238
1239 (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1240
1241 [[image:image-20220523151556-13.png||_mstalt="454129" _mstvisible="3"]]
1242
1243
1244 (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1245
1246 * Example: 0xA301  ~/~/  Same as AT+CLRDTA
1247
1248
1249
1250 == 4.13 Auto Send None-ACK messages ==
1251
1252
1253 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.
1254
1255
1256 (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1257
1258 The default factory setting is 0
1259
1260 (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:367px" %)
1261 |=(% style="width: 158px;" %)**Command Example**|=(% style="width: 118px;" %)**Function**|=(% style="width: 87px;" %)**Response**
1262 |(% style="width:158px" %)AT+PNACKMD=1|(% style="width:118px" %)Poll None-ACK message|(% style="width:87px" %)OK
1263
1264 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1265
1266 * Example: 0x3401  ~/~/  Same as AT+PNACKMD=1
1267
1268
1269
1270 == 4.14 Modified ATWOOD command for external sensor TMP117 or DS18B20 temperature alarm ==
1271
1272
1273 Feature: Set internal and external temperature sensor alarms.
1274
1275 (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:500px" %)
1276 |=(% style="width: 250px;" %)**Command Example**|=(% style="width: 200px;" %)**Function**|=(% style="width: 50px;" %)**Response**
1277 |(% style="width:268px" %)AT+WMOD=parameter1,parameter2,parameter3,parameter4|(% style="width:255px" %)Set internal and external temperature sensor alarms|(% style="width:181px" %)OK
1278
1279 (% style="color:#037691" %)**AT+WMOD=parameter1,parameter2,parameter3,parameter4**
1280
1281 (% style="color:#037691" %)**Parameter 1**(%%):  Alarm mode:
1282
1283 0): Cancel
1284
1285 1): Threshold alarm
1286
1287 2): Fluctuation alarm
1288
1289
1290 (% style="color:#037691" %)** Parameter 2**(%%):  Sampling time. Unit: seconds, up to 255 seconds.
1291
1292 (% 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.**
1293
1294
1295 (% style="color:#037691" %) **Parameter 3 and parameter 4:**
1296
1297 1):  If Alarm Mode is set to 1: Parameter 3 and parameter 4 are valid, as before, they represent low temperature and high temperature.
1298
1299 Such as AT+WMOD=1,60,45,105, it means high and low temperature alarm.
1300
1301
1302 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.
1303
1304 Such as AT+WMOD=2,10,2,it means that it is a fluctuation alarm.
1305
1306 If the difference between the current collected temperature and the last Uplin is ±2 degrees, the alarm will be issued.
1307
1308
1309 (% style="color:#4f81bd" %)**Downlink Command: 0xA5**
1310
1311 0xA5 00 ~-~- AT+WMOD=0.
1312
1313 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 )
1314
1315 0xA5 02 0A 02 ~-~- AT+WMOD=2,10,2  (AT+WMOD = second byte, third byte, fourth byte)
1316
1317 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.
1318
1319
1320
1321 = 5. Battery & How to replace =
1322
1323
1324 == 5.1 Battery Type ==
1325
1326
1327 (((
1328 (((
1329 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.
1330 )))
1331 )))
1332
1333 (((
1334
1335 )))
1336
1337 (((
1338 (((
1339 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1340 [[image:image-20220515075034-1.png||_mstalt="428961" _mstvisible="4" height="208" width="644"]]
1341 )))
1342 )))
1343
1344 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1345
1346
1347
1348 == 5.2 Replace Battery ==
1349
1350
1351 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.
1352
1353 [[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"]]
1354
1355
1356
1357 == 5.3 Battery Life Analyze ==
1358
1359
1360 (((
1361 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:
1362 [[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]]
1363 )))
1364
1365 (((
1366
1367 )))
1368
1369 (((
1370 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]]
1371 )))
1372
1373
1374
1375 = 6. FAQ =
1376
1377
1378 == 6.1 How to use AT Command? ==
1379
1380
1381 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.
1382
1383 [[image:image-20220530085651-1.png||_mstalt="429949"]]
1384
1385
1386 (% _msthash="506061" _msttexthash="170755" %)**Connection:**
1387
1388 * (% style="background-color:yellow" %)**USB to TTL GND <~-~->GND**
1389 * (% style="background-color:yellow" %)**USB to TTL RXD <~-~-> D+**
1390 * (% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1391
1392 (((
1393 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.
1394 )))
1395
1396
1397 Input password and ATZ to activate LHT65N,As shown below:
1398
1399 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1400
1401
1402 (% _msthash="506066" _msttexthash="544869" %)
1403 AT Command List is as below:
1404
1405 (% _msthash="506067" _msttexthash="361920" %)
1406 AT+<CMD>? :  Help on <CMD>
1407
1408 (% _msthash="506068" _msttexthash="243061" %)
1409 AT+<CMD> :  Run <CMD>
1410
1411 (% _msthash="506069" _msttexthash="704197" %)
1412 AT+<CMD>=<value> :  Set the value
1413
1414 (% _msthash="506070" _msttexthash="455676" %)
1415 AT+<CMD>=? :  Get the value
1416
1417 (% _msthash="506071" _msttexthash="670553" %)
1418 AT+DEBUG:  Set more info output
1419
1420 (% _msthash="506072" _msttexthash="485888" %)
1421 ATZ:  Trig a reset of the MCU
1422
1423 (% _msthash="506073" _msttexthash="2068872" %)
1424 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1425
1426 (% _msthash="506074" _msttexthash="689169" %)
1427 AT+DEUI:  Get or Set the Device EUI
1428
1429 (% _msthash="506075" _msttexthash="960414" %)
1430 AT+DADDR:  Get or Set the Device Address
1431
1432 (% _msthash="506076" _msttexthash="1079897" %)
1433 AT+APPKEY:  Get or Set the Application Key
1434
1435 (% _msthash="506077" _msttexthash="1326143" %)
1436 AT+NWKSKEY:  Get or Set the Network Session Key
1437
1438 (% _msthash="506078" _msttexthash="1573000" %)
1439 AT+APPSKEY:  Get or Set the Application Session Key
1440
1441 (% _msthash="506079" _msttexthash="1041729" %)
1442 AT+APPEUI:  Get or Set the Application EUI
1443
1444 (% _msthash="506080" _msttexthash="2104206" %)
1445 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1446
1447 (% _msthash="506081" _msttexthash="3369288" %)
1448 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1449
1450 (% _msthash="506082" _msttexthash="1894529" %)
1451 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1452
1453 (% _msthash="506083" _msttexthash="3864172" %)
1454 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1455
1456 (% _msthash="506084" _msttexthash="1712204" %)
1457 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1458
1459 (% _msthash="506085" _msttexthash="1281202" %)
1460 AT+RX2FQ:  Get or Set the Rx2 window frequency
1461
1462 (% _msthash="506086" _msttexthash="2796781" %)
1463 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1464
1465 (% _msthash="506087" _msttexthash="3285165" %)
1466 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1467
1468 (% _msthash="506088" _msttexthash="3286179" %)
1469 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1470
1471 (% _msthash="506089" _msttexthash="4703803" %)
1472 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1473
1474 (% _msthash="506090" _msttexthash="4704999" %)
1475 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1476
1477 (% _msthash="506091" _msttexthash="1528683" %)
1478 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1479
1480 (% _msthash="506092" _msttexthash="757185" %)
1481 AT+NWKID:  Get or Set the Network ID
1482
1483 (% _msthash="506093" _msttexthash="1156597" %)
1484 AT+FCU:  Get or Set the Frame Counter Uplink
1485
1486 (% _msthash="506094" _msttexthash="1273987" %)
1487 AT+FCD:  Get or Set the Frame Counter Downlink
1488
1489 (% _msthash="506095" _msttexthash="859222" %)
1490 AT+CLASS:  Get or Set the Device Class
1491
1492 (% _msthash="506096" _msttexthash="384852" %)
1493 AT+JOIN:  Join network
1494
1495 (% _msthash="506097" _msttexthash="548626" %)
1496 AT+NJS:  Get the join status
1497
1498 (% _msthash="506098" _msttexthash="2546206" %)
1499 AT+SENDB:  Send hexadecimal data along with the application port
1500
1501 (% _msthash="506099" _msttexthash="1932307" %)
1502 AT+SEND:  Send text data along with the application port
1503
1504 (% _msthash="506100" _msttexthash="3560557" %)
1505 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
1506
1507 (% _msthash="506101" _msttexthash="1429701" %)
1508 AT+RECV:  Print last received data in raw format
1509
1510 (% _msthash="506102" _msttexthash="1735981" %)
1511 AT+VER:  Get current image version and Frequency Band
1512
1513 (% _msthash="506103" _msttexthash="1189474" %)
1514 AT+CFM:  Get or Set the confirmation mode (0-1)
1515
1516 (% _msthash="506104" _msttexthash="1718210" %)
1517 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1518
1519 (% _msthash="506105" _msttexthash="1339403" %)
1520 AT+SNR:  Get the SNR of the last received packet
1521
1522 (% _msthash="506106" _msttexthash="1452009" %)
1523 AT+RSSI:  Get the RSSI of the last received packet
1524
1525 (% _msthash="506107" _msttexthash="2768142" %)
1526 AT+TDC:  Get or set the application data transmission interval in ms
1527
1528 (% _msthash="506108" _msttexthash="1083914" %)
1529 AT+PORT:  Get or set the application port
1530
1531 (% _msthash="506109" _msttexthash="622440" %)
1532 AT+DISAT:  Disable AT commands
1533
1534 (% _msthash="506110" _msttexthash="868361" %)
1535 AT+PWORD: Set password, max 9 digits
1536
1537 (% _msthash="506111" _msttexthash="2210299" %)
1538 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
1539
1540 (% _msthash="506112" _msttexthash="2113462" %)
1541 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
1542
1543 (% _msthash="506113" _msttexthash="2087423" %)
1544 AT+PDTA:  Print the sector data from start page to stop page
1545
1546 (% _msthash="506114" _msttexthash="1063127" %)
1547 AT+PLDTA:  Print the last few sets of data
1548
1549 (% _msthash="506115" _msttexthash="1999426" %)
1550 AT+CLRDTA:  Clear the storage, record position back to 1st
1551
1552 (% _msthash="506116" _msttexthash="442130" %)
1553 AT+SLEEP:  Set sleep mode
1554
1555 (% _msthash="506117" _msttexthash="1080222" %)
1556 AT+EXT:  Get or Set external sensor model
1557
1558 (% _msthash="506118" _msttexthash="1309490" %)
1559 AT+BAT:  Get the current battery voltage in mV
1560
1561 (% _msthash="506119" _msttexthash="813891" %)
1562 AT+CFG:  Print all configurations
1563
1564 (% _msthash="506120" _msttexthash="551707" %)
1565 AT+WMOD:  Get or Set Work Mode
1566
1567 (% _msthash="506121" _msttexthash="2631499" %)
1568 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
1569
1570 (% _msthash="506122" _msttexthash="3907150" %)
1571 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
1572
1573 (% _msthash="506123" _msttexthash="854620" %)
1574 AT+SETCNT:  Set the count at present
1575
1576 (% _msthash="506124" _msttexthash="2554877" %)
1577 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
1578
1579 (% _msthash="506125" _msttexthash="771849" %)
1580 AT+RPL:  Get or set response level
1581
1582 (% _msthash="506126" _msttexthash="1484314" %)
1583 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
1584
1585 (% _msthash="506127" _msttexthash="741728" %)
1586 AT+LEAPSEC:  Get or Set Leap Second
1587
1588 (% _msthash="506128" _msttexthash="1694017" %)
1589 AT+SYNCMOD:  Get or Set time synchronization method
1590
1591 (% _msthash="506129" _msttexthash="2235948" %)
1592 AT+SYNCTDC:  Get or set time synchronization interval in day
1593
1594 (% _msthash="506130" _msttexthash="425542" %)
1595 AT+PID:  Get or set the PID
1596
1597
1598
1599 == 6.2 Where to use AT commands and Downlink commands ==
1600
1601
1602 **AT commands：**
1603
1604 [[image:image-20220620153708-1.png||height="603" width="723"]]
1605
1606
1607 **Downlink commands:**
1608
1609
1610
1611 (% style="color:blue" %)**TTN:**
1612
1613 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
1614
1615
1616
1617 (% style="color:blue" %)**Helium：**
1618
1619 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
1620
1621
1622
1623 (% style="color:blue" %)**Chirpstack: The downlink window will not be displayed until the network is accessed**
1624
1625
1626 [[image:image-20220615094850-6.png||_mstalt="433082"]]
1627
1628
1629 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
1630
1631
1632
1633 (% style="color:blue" %)**Aws:**
1634
1635 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1636
1637
1638
1639 == 6.3 How to change the uplink interval？ ==
1640
1641
1642 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);"]]
1643
1644
1645
1646 == 6.4 How to use TTL-USB to connect a PC to input AT commands? ==
1647
1648
1649 [[image:image-20220615153355-1.png]]
1650
1651 [[image:1655802313617-381.png]]
1652
1653
1654 (((
1655 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.
1656 )))
1657
1658
1659 Input password and ATZ to activate LHT65N,As shown below:
1660
1661 [[image:image-20220615154519-3.png||height="672" width="807"]]
1662
1663
1664
1665 == 6.5 How to use TTL-USB to connect PC to upgrade firmware? ==
1666
1667
1668 [[image:image-20220615153355-1.png]]
1669
1670
1671 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1672
1673 [[image:image-20220615170542-5.png]]
1674
1675
1676
1677 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1678
1679 (% _msthash="506146" _msttexthash="52173160" %)
1680 First connect the four lines；(% style="display:none" %)
1681
1682 [[image:image-20220621170938-1.png||height="413" width="419"]](% _mstvisible="1" %)，(% style="display:none" %)
1683
1684
1685 (% _mstvisible="1" %)Then use DuPont cable to short circuit port3 and port1, and then release them, so that the device enters bootlaod mode.
1686
1687 [[image:image-20220621170938-2.png]]
1688
1689
1690
1691 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1692
1693 [[image:image-20220615171334-6.png]]
1694
1695
1696 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1697
1698
1699 When this interface appears, it indicates that the download has been completed.
1700
1701 [[image:image-20220620160723-8.png]]
1702
1703
1704 Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
1705
1706
1707
1708 == 6.6 Using USB-TYPE-C to connect to the computer using the AT command ==
1709
1710
1711 [[image:image-20220623110706-1.png]]
1712
1713
1714 [[image:image-20220623112117-4.png||height="459" width="343"]]
1715
1716
1717 (((
1718 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.
1719 )))
1720
1721
1722 Input password and ATZ to activate LHT65N,As shown below:
1723
1724 [[image:image-20220615154519-3.png||height="672" width="807"]]
1725
1726
1727
1728 == 6.7 How to use  USB-TYPE-C to connect PC to upgrade firmware? ==
1729
1730
1731 [[image:image-20220623110706-1.png]]
1732
1733
1734 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1735
1736 [[image:image-20220615170542-5.png]]
1737
1738
1739
1740 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1741
1742 (% _msthash="506146" _msttexthash="52173160" %)
1743 First connect the four lines；
1744
1745 (% _msthash="506146" _msttexthash="52173160" %)
1746 [[image:image-20220623113959-5.png||height="528" width="397"]]
1747
1748 (% _msthash="506146" _msttexthash="52173160" %)
1749 Press and hold the start key to restart and enter  (% _mstvisible="1" %)bootlaod(%%) mode.
1750
1751
1752
1753 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1754
1755 [[image:image-20220615171334-6.png]]
1756
1757
1758 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1759
1760
1761 When this interface appears, it indicates that the download has been completed.
1762
1763 [[image:image-20220620160723-8.png]]
1764
1765
1766 Finally,restart reset device again
1767
1768
1769
1770 = 7. Order Info =
1771
1772
1773 Part Number: (% _mstvisible="4" style="color:#4f81bd" %)** LHT65N-XX-YY**
1774
1775 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
1776
1777 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
1778 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
1779 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
1780 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
1781 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
1782 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**US915**(%%): LoRaWAN US915 band
1783 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
1784 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
1785
1786 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
1787
1788 * (% style="color:red" %)**E3**(%%): External Temperature Probe
1789
1790
1791
1792 = 8. Packing Info =
1793
1794
1795 **Package Includes**:
1796
1797 * LHT65N Temperature & Humidity Sensor x 1
1798 * Optional external sensor
1799
1800 **Dimension and weight**:
1801
1802 * Device Size:  10 x 10 x 3.5 cm
1803 * Device Weight: 120.5g
1804
1805
1806
1807 = 9. Reference material =
1808
1809
1810 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
1811
1812
1813
1814 = 10. FCC Warning =
1815
1816
1817 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
1818
1819 (1) This device may not cause harmful interference；
1820
1821 (2) this device must accept any interference received, including interference that may cause undesired operation.
1822
1823
1824

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