Version 213.2 by Xiaoling on 2022/11/02 15:39
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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.
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105
106
107
108 == 2.2 How to Activate LHT65N? ==
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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. 
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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:
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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"]]
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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"]]
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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:
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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.
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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]]
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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"]]
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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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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.)
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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 ===
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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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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
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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 ===
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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 # ===
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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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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℃
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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 * **Battery status & Built-in Humidity**
379
380 (% _mstvisible="1" border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:461px" %)
381 |=(% style="width: 67px;" %)Bit(bit)|=(% style="width: 256px;" %)[15:14]|=(% style="width: 132px;" %)[11:0]
382 |(% style="width:67px" %)Value|(% style="width:256px" %)(((
383 BAT Status
384 00(b): Ultra Low ( BAT <= 2.50v)
385 01(b): Low  (2.50v <=BAT <= 2.55v)
386 10(b): OK   (2.55v <= BAT <=2.65v)
387 11(b): Good   (BAT >= 2.65v)
388 )))|(% style="width:132px" %)(((
389 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
390 )))
391
392 * **Status & Ext Byte**
393
394 (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:500px" %)
395 |=(% 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]**
396 |=(% 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)
397
398 * (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
399 * (% 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.
400 * (% 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)
401
402
403
404 ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
405
406
407 In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
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409 be used to power the external ADC sensor; user can control the power on time for this
410
411 (% style="color:blue" %)**sensor by setting:**
412
413 **AT+EXT=6,timeout**  (% _msthash="506085" _msttexthash="8782189" _mstvisible="3" style="color:red" %)**Time to power this sensor, from 0 ~~ 65535ms**
414
415 **For example:**
416
417 AT+EXT=6,1000 will power this sensor for 1000ms before sampling the ADC value.
418
419
420 Or use **downlink command A2** to set the same.
421
422 The measuring range of the node is only about 0.1V to 1.1V The voltage resolution is about 0.24mv.
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424 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.
425
426 [[image:image-20220628150112-1.png||height="241" width="285"]]
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429 When ADC_IN1 pin is connected to GND or suspended, ADC value is 0
430
431 [[image:image-20220628150714-4.png]]
432
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434 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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437 1) The minimum range is about 0.1V. Each chip has internal calibration, so this value is close to 0.1V
438
439 [[image:image-20220628151005-5.png]]
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442 2) The maximum range is about 1.1V. Each chip has internal calibration, so this value is close to 1.1v
443
444 [[image:image-20220628151056-6.png]]
445
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447 3) Within range
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449 [[image:image-20220628151143-7.png]]
450
451
452
453 ==== 2.4.6.4 Ext~=2 TMP117 Sensor （Since Firmware v1.3） ====
454
455
456 [[image:image-20220927095645-1.png||height="534" width="460"]]
457
458
459 (% style="color:blue" %)**Ext=2,Temperature Sensor(TMP117)：**
460
461 [[image:image-20220906102307-7.png]]
462
463
464 (% style="color:blue" %)**Interrupt Mode and Counting Mode:**
465
466 The external cable NE2 can be use for MOD4 and MOD8
467
468
469
470 ==== 2.4.6.5 Ext~=4 Interrupt Mode （Since Firmware v1.3） ====
471
472
473 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will send an uplink when there is a trigger.**
474
475
476 (% style="color:blue" %)**Interrupt Mode can be used to connect to external interrupt sensors such as:**
477
478 (% style="color:#037691" %)**Case 1: Door Sensor.** (%%)3.3v Out for such sensor is just to detect Open/Close.
479
480 In Open State, the power consumption is the same as if there is no probe
481
482 In Close state, the power consumption will be 3uA higher than normal.
483
484 [[image:image-20220906100852-1.png||height="205" width="377"]]
485
486
487 Ext=4,Interrupt Sensor：
488
489 (% border="1.5" cellpadding="4" cellspacing="4" style="background-color:#ffffcc; color:green; height:6px; width:478px" %)
490 |(% style="width:101px" %)(((
491 AT+EXT=4,1
492 )))|(% style="width:373px" %)(((
493 Sent uplink packet in both rising and falling interrupt
494 )))
495 |(% style="width:101px" %)(((
496 AT+EXT=4,2
497 )))|(% style="width:373px" %)(((
498 Sent uplink packet only in falling interrupt
499 )))
500 |(% style="width:101px" %)(((
501 AT+EXT=4,3
502 )))|(% style="width:373px" %)(((
503 Sent uplink packet only in rising interrupt
504 )))
505
506 Trigger by falling edge:
507
508 [[image:image-20220906101145-2.png]]
509
510
511 Trigger by raising edge：
512
513 [[image:image-20220906101145-3.png]]
514
515
516
517 ==== 2.4.6.6 Ext~=8 Counting Mode（Since Firmware v1.3） ====
518
519
520 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will count for every interrupt and uplink periodically.**
521
522
523 (% 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.
524
525 [[image:image-20220906101320-4.png||height="366" width="698"]]
526
527
528 (% 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
529
530 [[image:image-20220906101320-5.png||height="353" width="696"]]
531
532
533 Ext=8, Counting Sensor ( 4 bytes)：
534
535 (% border="2" cellpadding="4" cellspacing="4" style="background-color:#ffffcc; color:green; height:6px; width:381px" %)
536 |(% style="width:138px" %)(((
537 AT+EXT=8,0
538 )))|(% style="width:240px" %)(((
539 Count at falling interrupt
540 )))
541 |(% style="width:138px" %)(((
542 AT+EXT=8,1
543 )))|(% style="width:240px" %)(((
544 Count at rising interrupt
545 )))
546 |(% style="width:138px" %)(((
547 AT+SETCNT=60
548 )))|(% style="width:240px" %)(((
549 Sent current count to 60
550 )))
551
552 [[image:image-20220906101320-6.png]]
553
554
555 (% style="color:blue" %)**A2 downlink Command：**
556
557 A2 02:  Same as AT+EXT=2 (AT+EXT= second byte)
558
559 A2 06 01 F4:  Same as AT+EXT=6,500 (AT+EXT= second byte, third and fourth bytes)
560
561 A2 04 02:  Same as AT+EXT=4,2 (AT+EXT= second byte, third byte)
562
563 A2 08 01 00:  Same as AT+EXT=8,0 (AT+EXT= second byte, fourth byte)
564
565 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)
566
567
568
569 == 2.5 Show data on Datacake ==
570
571
572 (((
573 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:
574 )))
575
576 (((
577
578 )))
579
580 (((
581 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the LoRaWAN network.
582 )))
583
584 (((
585 (% 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.
586 )))
587
588 (((
589
590 )))
591
592 (((
593 Add Datacake:
594 )))
595
596
597 [[image:image-20220523000825-7.png||_mstalt="429884" _mstvisible="3" height="262" width="583"]]
598
599
600
601 Select default key as Access Key:
602
603
604 [[image:image-20220523000825-8.png||_mstalt="430248" _mstvisible="3" height="453" width="406"]]
605
606
607 In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/||_mstvisible="2"]]) , add LHT65 device.
608
609
610 [[image:image-20220523000825-9.png||_mstalt="430612" _mstvisible="3" height="366" width="392"]]
611
612
613 [[image:image-20220523000825-10.png||_mstalt="450619" _mstvisible="3" height="413" width="728"]]
614
615
616
617 == 2.6 Datalog Feature ==
618
619
620 (((
621 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.
622 )))
623
624
625
626 === 2.6.1 Ways to get datalog via LoRaWAN ===
627
628
629 There are two methods:
630
631 (% style="color:blue" %)**Method 1:** (%%)IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specified time range.
632
633
634 (% 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.
635
636
637 (% style="color:red" %)**Note for method 2:**
638
639 * a) LHT65N will do an ACK check for data records sending to make sure every data arrive server.
640 * 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.
641
642 Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
643
644
645 [[image:image-20220703111700-2.png||height="381" width="1119"]]
646
647
648
649 === 2.6.2 Unix TimeStamp ===
650
651
652 LHT65N uses Unix TimeStamp format based on
653
654
655 [[image:image-20220523001219-11.png||_mstalt="450450" _mstvisible="3" height="97" width="627"]]
656
657
658
659 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/||_mstvisible="3"]] :
660
661 Below is the converter example
662
663 [[image:image-20220523001219-12.png||_mstalt="450827" _mstvisible="3" height="298" width="720"]]
664
665 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
666
667
668
669 === 2.6.3 Set Device Time ===
670
671
672 (((
673 (% style="color:blue" %)**There are two ways to set device's time:**
674 )))
675
676 (((
677 **1.  Through LoRaWAN MAC Command (Default settings)**
678 )))
679
680 (((
681 User need to set SYNCMOD=1 to enable sync time via MAC command.
682 )))
683
684 (((
685 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).
686 )))
687
688 (((
689 (% 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.**
690 )))
691
692 (((
693
694 )))
695
696 (((
697 **2. Manually Set Time**
698 )))
699
700 (((
701 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
702 )))
703
704
705
706 === 2.6.4 Poll sensor value ===
707
708
709 User can poll sensor value based on timestamps from the server. Below is the downlink command.
710
711 [[image:image-20220523152302-15.png||_mstalt="451581" _mstvisible="3"]]
712
713
714 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.
715
716 For example, downlink command **31 5FC5F350 5FC6 0160 05**
717
718 Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00’s data
719
720 Uplink Internal =5s，means LHT65N will send one packet every 5s. range 5~~255s.
721
722
723
724 === 2.6.5 Datalog Uplink payload ===
725
726
727 The Datalog poll reply uplink will use below payload format.
728
729 **Retrieval data payload:**
730
731 (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:480px" %)
732 |=(% style="width: 60px;" %)(((
733 **Size(bytes)**
734 )))|=(% style="width: 90px;" %)**2**|=(% style="width: 90px;" %)**2**|=(% style="width: 70px;" %)**2**|=(% style="width: 100px;" %)**1**|=(% style="width: 70px;" %)**4**
735 |(% 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"]]
736
737 **Poll message flag & Ext:**
738
739 [[image:image-20221006192726-1.png||height="112" width="754"]]
740
741 (% 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)
742
743 (% style="color:blue" %)**Poll Message Flag**(%%): 1: This message is a poll message reply.
744
745 * Poll Message Flag is set to 1.
746
747 * Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
748
749 For example, in US915 band, the max payload for different DR is:
750
751 (% style="color:blue" %)**a) DR0:** (%%)max is 11 bytes so one entry of data
752
753 (% style="color:blue" %)**b) DR1:**(%%) max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
754
755 (% style="color:blue" %)**c) DR2:**(%%) total payload includes 11 entries of data
756
757 (% style="color:blue" %)**d) DR3: **(%%)total payload includes 22 entries of data.
758
759 If devise doesn't have any data in the polling time. Device will uplink 11 bytes of 0   
760
761
762 **Example:**
763
764 If LHT65N has below data inside Flash:
765
766 [[image:image-20220523144455-1.png||_mstalt="430040" _mstvisible="3" height="335" width="735"]]
767
768
769 If user sends below downlink command: (% style="background-color:yellow" %)3160065F9760066DA705
770
771 Where : Start time: 60065F97 = time 21/1/19 04:27:03
772
773 Stop time: 60066DA7= time 21/1/19 05:27:03
774
775
776 **LHT65N will uplink this payload.**
777
778 [[image:image-20220523001219-13.png||_mstalt="451204" _mstvisible="3" height="421" style="text-align:left" width="727"]]
779
780
781 __**7FFF089801464160065F97**__ **__7FFF__ __088E__ __014B__ __41__ __60066009__** 7FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
782
783 Where the first 11 bytes is for the first entry:
784
785 7FFF089801464160065F97
786
787 Ext sensor data=0x7FFF/100=327.67
788
789 Temp=0x088E/100=22.00
790
791 Hum=0x014B/10=32.6
792
793 poll message flag & Ext=0x41,means reply data,Ext=1
794
795 Unix time is 0x60066009=1611030423s=21/1/19 04:27:03
796
797
798
799 == 2.7 Alarm Mode ==
800
801
802 (((
803 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.
804 )))
805
806 (((
807 (% style="color:red" %)**Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.**
808
809
810
811 === 2.7.1 ALARM MODE ( Since v1.3.1 firmware) ===
812
813
814 **Internal GXHT30 temperature alarm**
815
816 (((
817 (% class="box infomessage" %)
818 (((
819 **AT+WMOD=3**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)
820
821 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
822
823 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
824
825 **AT+ARTEMP=？ **:  Gets the alarm range of the internal temperature sensor(% _mstvisible="3" style="display:none" %)
826
827 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
828
829 **AT+LEDALARM=1** :       Enable LED visual Alarm.
830 )))
831 )))
832
833 (% style="color:#4f81bd" %)**Downlink Command:**
834
835 AT+WMOD=1:  A501  ,  AT+WMOD=0 :  A600
836
837 AT+CITEMP=1 : A60001
838
839 AT+ARTEMP=1,60  :  A70001003C
840
841 AT+ARTEMP=-16,60 :  A7FFF0003C
842
843 AT+LEDALARM=1  :  3601
844
845
846 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
847
848 Total bytes: 8 bytes
849
850 **Example: **AA0100010001003C
851
852 WMOD=01
853
854 CITEMP=0001
855
856 TEMPlow=0001
857
858 TEMPhigh=003C
859
860
861 **DS18B20 and TMP117 Threshold Alarm**
862
863 **~ AT+WMOD=1,60,-10,20**
864
865 (% style="color:#4f81bd" %)**Downlink Command:**
866
867 **Example: **A5013CFC180014
868
869 MOD=01
870
871 CITEMP=3C(S)
872
873 TEMPlow=FC18
874
875 TEMPhigh=0014
876
877
878 **Fluctuation alarm for DS18B20 and TMP117**
879
880 **AT+WMOD=2,60,5** 
881
882 (% style="color:#4f81bd" %)**Downlink Command:**
883
884 **Example: **A5023C05
885
886 MOD=02
887
888 CITEMP=3C(S)
889
890 temperature fluctuation=05
891
892
893 **Collect multiple times and send once**
894
895 **AT+WMOD=3,1,60,20,-16,32,1**  ~/~/ Mode 3, the collection interval is 60s, the total number of collection is 20 times, and the data of these 20 times will be sent to the 20th time, with a maximum of 60 groups, the normal working temperature range is -10 to 32°C, 1 is to open the temperature alarm, 0 is to close the temperature alarm, and the temperature is turned on. After the alarm, if the temperature collected at the current time exceeds the normal working temperature, a data will be sent immediately.
896
897 (% style="color:#4f81bd" %)**Downlink Command:**
898
899 **Example: **A50301003C14FFF0002001
900
901 MOD=03
902
903 EXT=01
904
905 CITEMP=003C(S)
906
907 Total number of acquisitions=14
908
909 TEMPlow=FFF0
910
911 TEMPhigh=0020
912
913 ARTEMP=01
914
915
916 **Uplink payload( Fport=3)**
917
918 **Example: **CBEA0109920A4109C4
919
920 BatV=CBEA
921
922 EXT=01
923
924 Temp1=0992  ~/~/ 24.50℃
925
926 Temp2=0A41  ~/~/ 26.25℃
927
928 Temp3=09C4  ~/~/ 25.00℃
929
930
931 (% style="color:red" %)**Note: This uplink will automatically select the appropriate DR according to the data length**
932
933 (% style="color:red" %)** In this mode, the temperature resolution of ds18b20 is 0.25℃ to save power consumption**
934
935
936
937 )))
938
939 (((
940 === 2.7.2 ALARM MODE ( Before v1.3.1 firmware) ===
941
942
943 )))
944
945 (% _mstvisible="1" class="box infomessage" %)
946 (((
947 (((
948 **AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)
949 )))
950
951 (((
952 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
953 )))
954
955 (((
956 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
957 )))
958
959 (((
960 **AT+ARTEMP=？ **:  Gets the alarm range of the internal temperature sensor(% _mstvisible="3" style="display:none" %)
961 )))
962
963 (((
964 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
965 )))
966 )))
967
968 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
969
970 Total bytes: 8 bytes
971
972 **Example:**AA0100010001003C
973
974 WMOD=01
975
976 CITEMP=0001
977
978 TEMPlow=0001
979
980 TEMPhigh=003C
981
982
983
984 == 2.8 LED Indicator ==
985
986
987 The LHT65 has a triple color LED which for easy showing different stage .
988
989 While user press ACT button, the LED will work as per LED status with ACT button.
990
991 In a normal working state:
992
993 * For each uplink, the BLUE LED or RED LED will blink once.
994 BLUE LED when external sensor is connected.
995 * RED LED when external sensor is not connected
996 * For each success downlink, the PURPLE LED will blink once
997
998
999
1000 == 2.9 installation ==
1001
1002
1003 (% _mstvisible="1" %)
1004 [[image:image-20220516231650-1.png||_mstalt="428597" _mstvisible="3" height="436" width="428"]]
1005
1006
1007
1008 = 3. Sensors and Accessories =
1009
1010
1011 == 3.1 E2 Extension Cable ==
1012
1013
1014 [[image:image-20220619092222-1.png||height="182" width="188"]][[image:image-20220619092313-2.png||height="182" width="173"]]
1015
1016
1017 **1m long breakout cable for LHT65N. Features:**
1018
1019 * (((
1020 Use for AT Command， works for both LHT52/LHT65N
1021 )))
1022 * (((
1023 Update firmware for LHT65N, works for both LHT52/LHT65N
1024 )))
1025 * (((
1026 Supports ADC mode to monitor external ADC
1027 )))
1028 * (((
1029 Supports Interrupt mode
1030 )))
1031 * (((
1032 Exposed All pins from the LHT65N Type-C connector.
1033
1034
1035
1036 )))
1037
1038 [[image:image-20220619092421-3.png||height="371" width="529"]]
1039
1040
1041
1042
1043 == 3.2 E3 Temperature Probe ==
1044
1045
1046 [[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"]]
1047
1048
1049 Temperature sensor with 2 meters cable long
1050
1051 * Resolution: 0.0625 °C
1052 * ±0.5°C accuracy from -10°C to +85°C
1053 * ±2°C accuracy from -55°C to +125°C
1054 * Operating Range: -40 ~~ 125 °C
1055 * Working voltage 2.35v ~~ 5v
1056
1057
1058
1059 = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1060
1061
1062 (((
1063 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
1064 )))
1065
1066 * (((
1067 AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
1068 )))
1069
1070 * (((
1071 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
1072 )))
1073
1074 (((
1075 There are two kinds of commands to configure LHT65N, they are:
1076 )))
1077
1078 * (((
1079 (% style="color:#4f81bd" %)**General Commands**.
1080 )))
1081
1082 (((
1083 These commands are to configure:
1084 )))
1085
1086 1. (((
1087 General system settings like: uplink interval.
1088 )))
1089 1. (((
1090 LoRaWAN protocol & radio-related commands.
1091 )))
1092
1093 (((
1094 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]]
1095 )))
1096
1097 * (((
1098 (% style="color:#4f81bd" %)**Commands special design for LHT65N**
1099 )))
1100
1101 (((
1102 These commands are only valid for LHT65N, as below:
1103 )))
1104
1105
1106
1107 == 4.1 Set Transmit Interval Time ==
1108
1109
1110 Feature: Change LoRaWAN End Node Transmit Interval.
1111
1112
1113 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
1114
1115 [[image:image-20220523150701-2.png||_mstalt="427453" _mstvisible="3"]]
1116
1117
1118 (% style="color:#4f81bd" %)**Downlink Command: 0x01**
1119
1120 Format: Command Code (0x01) followed by 3 bytes time value.
1121
1122 If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.
1123
1124 * **Example 1**: Downlink Payload: 0100001E  ~/~/ Set Transmit Interval (TDC) = 30 seconds
1125
1126 * **Example 2**: Downlink Payload: 0100003C  ~/~/ Set Transmit Interval (TDC) = 60 seconds
1127
1128
1129
1130 == 4.2 Set External Sensor Mode ==
1131
1132
1133 Feature: Change External Sensor Mode.
1134
1135
1136 (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1137
1138 [[image:image-20220523150759-3.png||_mstalt="432146" _mstvisible="3"]]
1139
1140
1141 (% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1142
1143 Total bytes: 2 ~~ 5 bytes
1144
1145 **Example:**
1146
1147 * 0xA201: Set external sensor type to E1
1148
1149 * 0xA209: Same as AT+EXT=9
1150
1151 * 0xA20702003c: Same as AT+SETCNT=60
1152
1153
1154
1155 == 4.3 Enable/Disable uplink Temperature probe ID ==
1156
1157
1158 (((
1159 Feature: If PID is enabled, device will send the temperature probe ID on:
1160 )))
1161
1162 * (((
1163 First Packet after OTAA Join
1164 )))
1165 * (((
1166 Every 24 hours since the first packet.
1167 )))
1168
1169 (((
1170 PID is default set to disable (0)
1171
1172
1173 )))
1174
1175 (% style="color:#4f81bd" %)**AT Command:**
1176
1177 [[image:image-20220523150928-4.png||_mstalt="431821" _mstvisible="3"]]
1178
1179
1180 (% style="color:#4f81bd" %)**Downlink Command:**
1181
1182 * **0xA800**  **~-~->** AT+PID=0
1183 * **0xA801**     **~-~->** AT+PID=1
1184
1185
1186
1187 == 4.4 Set Password ==
1188
1189
1190 Feature: Set device password, max 9 digits
1191
1192
1193 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1194
1195 [[image:image-20220523151052-5.png||_mstalt="428623" _mstvisible="3"]]
1196
1197
1198 (% style="color:#4f81bd" %)**Downlink Command:**
1199
1200 No downlink command for this feature.
1201
1202
1203
1204 == 4.5 Quit AT Command ==
1205
1206
1207 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1208
1209
1210 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1211
1212 [[image:image-20220523151132-6.png||_mstalt="428649" _mstvisible="3"]]
1213
1214
1215 (% style="color:#4f81bd" %)**Downlink Command:**
1216
1217 No downlink command for this feature.
1218
1219
1220
1221 == 4.6 Set to sleep mode ==
1222
1223
1224 Feature: Set device to sleep mode
1225
1226 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1227 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1228
1229 (% _msthash="315251" _msttexthash="289783" style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1230
1231 [[image:image-20220523151218-7.png||_mstalt="430703" _mstvisible="3"]]
1232
1233
1234 (% _msthash="315252" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1235
1236 * There is no downlink command to set to Sleep mode.
1237
1238
1239
1240 == 4.7 Set system time ==
1241
1242
1243 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1244
1245
1246 (% _msthash="315253" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1247
1248 [[image:image-20220523151253-8.png||_mstalt="430677" _mstvisible="3"]]
1249
1250
1251 (% _msthash="315254" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1252
1253 0x306007806000  ~/~/  Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1254
1255
1256
1257 == 4.8 Set Time Sync Mode ==
1258
1259
1260 (((
1261 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1262 )))
1263
1264 (((
1265 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.
1266
1267
1268 )))
1269
1270 (% _msthash="506058" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1271
1272 [[image:image-20220523151336-9.png||_mstalt="431717" _mstvisible="3"]]
1273
1274
1275 (% style="color:#4f81bd" %)**Downlink Command:**
1276
1277 0x28 01  ~/~/  Same As AT+SYNCMOD=1
1278 0x28 00  ~/~/  Same As AT+SYNCMOD=0
1279
1280
1281
1282 == 4.9 Set Time Sync Interval ==
1283
1284
1285 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1286
1287
1288 (% _msthash="315256" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1289
1290 [[image:image-20220523151411-10.png||_mstalt="449696" _mstvisible="3"]]
1291
1292
1293 (% _msthash="315257" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1294
1295 **0x29 0A**  ~/~/ Same as AT+SYNCTDC=0x0A
1296
1297
1298
1299 == 4.10 Print data entries base on page. ==
1300
1301
1302 Feature: Print the sector data from start page to stop page (max is 416 pages).
1303
1304
1305 (% _msthash="315258" _msttexthash="264953" style="color:#4f81bd" %)**AT Command: AT+PDTA**
1306
1307 [[image:image-20220523151450-11.png||_mstalt="451035" _mstvisible="3"]]
1308
1309
1310 (% _msthash="315259" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1311
1312 No downlink commands for feature
1313
1314
1315
1316 == 4.11 Print last few data entries. ==
1317
1318
1319 Feature: Print the last few data entries
1320
1321
1322 (% _msthash="315260" _msttexthash="288522" style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1323
1324 [[image:image-20220523151524-12.png||_mstalt="452101" _mstvisible="3"]]
1325
1326
1327 (% _msthash="315261" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1328
1329 No downlink commands for feature
1330
1331
1332
1333 == 4.12 Clear Flash Record ==
1334
1335
1336 Feature: Clear flash storage for data log feature.
1337
1338
1339 (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1340
1341 [[image:image-20220523151556-13.png||_mstalt="454129" _mstvisible="3"]]
1342
1343
1344 (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1345
1346 * Example: 0xA301  ~/~/  Same as AT+CLRDTA
1347
1348
1349
1350 == 4.13 Auto Send None-ACK messages ==
1351
1352
1353 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.
1354
1355
1356 (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1357
1358 The default factory setting is 0
1359
1360 (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:367px" %)
1361 |=(% style="width: 158px;" %)**Command Example**|=(% style="width: 118px;" %)**Function**|=(% style="width: 87px;" %)**Response**
1362 |(% style="width:158px" %)AT+PNACKMD=1|(% style="width:118px" %)Poll None-ACK message|(% style="width:87px" %)OK
1363
1364 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1365
1366 * Example: 0x3401  ~/~/  Same as AT+PNACKMD=1
1367
1368
1369
1370 == 4.14 Modified ATWOOD command for external sensor TMP117 or DS18B20 temperature alarm ==
1371
1372
1373 Feature: Set internal and external temperature sensor alarms.
1374
1375 (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:500px" %)
1376 |=(% style="width: 250px;" %)**Command Example**|=(% style="width: 200px;" %)**Function**|=(% style="width: 50px;" %)**Response**
1377 |(% style="width:268px" %)AT+WMOD=parameter1,parameter2,parameter3,parameter4|(% style="width:255px" %)Set internal and external temperature sensor alarms|(% style="width:181px" %)OK
1378
1379 (% style="color:#037691" %)**AT+WMOD=parameter1,parameter2,parameter3,parameter4**
1380
1381 (% style="color:#037691" %)**Parameter 1**(%%):  Alarm mode:
1382
1383 0): Cancel
1384
1385 1): Threshold alarm
1386
1387 2): Fluctuation alarm
1388
1389
1390 (% style="color:#037691" %)** Parameter 2**(%%):  Sampling time. Unit: seconds, up to 255 seconds.
1391
1392 (% 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.**
1393
1394
1395 (% style="color:#037691" %) **Parameter 3 and parameter 4:**
1396
1397 1):  If Alarm Mode is set to 1: Parameter 3 and parameter 4 are valid, as before, they represent low temperature and high temperature.
1398
1399 Such as AT+WMOD=1,60,45,105, it means high and low temperature alarm.
1400
1401
1402 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.
1403
1404 Such as AT+WMOD=2,10,2,it means that it is a fluctuation alarm.
1405
1406 If the difference between the current collected temperature and the last Uplin is ±2 degrees, the alarm will be issued.
1407
1408
1409 (% style="color:#4f81bd" %)**Downlink Command: 0xA5**
1410
1411 0xA5 00 ~-~- AT+WMOD=0.
1412
1413 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 )
1414
1415 0xA5 02 0A 02 ~-~- AT+WMOD=2,10,2  (AT+WMOD = second byte, third byte, fourth byte)
1416
1417 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.
1418
1419
1420
1421 = 5. Battery & How to replace =
1422
1423
1424 == 5.1 Battery Type ==
1425
1426
1427 (((
1428 (((
1429 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.
1430 )))
1431 )))
1432
1433 (((
1434
1435 )))
1436
1437 (((
1438 (((
1439 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1440 [[image:image-20220515075034-1.png||_mstalt="428961" _mstvisible="4" height="208" width="644"]]
1441 )))
1442 )))
1443
1444 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1445
1446
1447
1448 == 5.2 Replace Battery ==
1449
1450
1451 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.
1452
1453 [[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"]]
1454
1455
1456
1457 == 5.3 Battery Life Analyze ==
1458
1459
1460 (((
1461 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:
1462 [[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]]
1463 )))
1464
1465 (((
1466
1467 )))
1468
1469 (((
1470 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]]
1471 )))
1472
1473
1474
1475 = 6. FAQ =
1476
1477
1478 == 6.1 How to use AT Command? ==
1479
1480
1481 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.
1482
1483 [[image:image-20220530085651-1.png||_mstalt="429949"]]
1484
1485
1486 (% _msthash="506061" _msttexthash="170755" %)**Connection:**
1487
1488 * (% style="background-color:yellow" %)**USB to TTL GND <~-~->GND**
1489 * (% style="background-color:yellow" %)**USB to TTL RXD <~-~-> D+**
1490 * (% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1491
1492 (((
1493 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.
1494 )))
1495
1496
1497 Input password and ATZ to activate LHT65N,As shown below:
1498
1499 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1500
1501
1502 (% _msthash="506066" _msttexthash="544869" %)
1503 AT Command List is as below:
1504
1505 (% _msthash="506067" _msttexthash="361920" %)
1506 AT+<CMD>? :  Help on <CMD>
1507
1508 (% _msthash="506068" _msttexthash="243061" %)
1509 AT+<CMD> :  Run <CMD>
1510
1511 (% _msthash="506069" _msttexthash="704197" %)
1512 AT+<CMD>=<value> :  Set the value
1513
1514 (% _msthash="506070" _msttexthash="455676" %)
1515 AT+<CMD>=? :  Get the value
1516
1517 (% _msthash="506071" _msttexthash="670553" %)
1518 AT+DEBUG:  Set more info output
1519
1520 (% _msthash="506072" _msttexthash="485888" %)
1521 ATZ:  Trig a reset of the MCU
1522
1523 (% _msthash="506073" _msttexthash="2068872" %)
1524 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1525
1526 (% _msthash="506074" _msttexthash="689169" %)
1527 AT+DEUI:  Get or Set the Device EUI
1528
1529 (% _msthash="506075" _msttexthash="960414" %)
1530 AT+DADDR:  Get or Set the Device Address
1531
1532 (% _msthash="506076" _msttexthash="1079897" %)
1533 AT+APPKEY:  Get or Set the Application Key
1534
1535 (% _msthash="506077" _msttexthash="1326143" %)
1536 AT+NWKSKEY:  Get or Set the Network Session Key
1537
1538 (% _msthash="506078" _msttexthash="1573000" %)
1539 AT+APPSKEY:  Get or Set the Application Session Key
1540
1541 (% _msthash="506079" _msttexthash="1041729" %)
1542 AT+APPEUI:  Get or Set the Application EUI
1543
1544 (% _msthash="506080" _msttexthash="2104206" %)
1545 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1546
1547 (% _msthash="506081" _msttexthash="3369288" %)
1548 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1549
1550 (% _msthash="506082" _msttexthash="1894529" %)
1551 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1552
1553 (% _msthash="506083" _msttexthash="3864172" %)
1554 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1555
1556 (% _msthash="506084" _msttexthash="1712204" %)
1557 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1558
1559 (% _msthash="506085" _msttexthash="1281202" %)
1560 AT+RX2FQ:  Get or Set the Rx2 window frequency
1561
1562 (% _msthash="506086" _msttexthash="2796781" %)
1563 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1564
1565 (% _msthash="506087" _msttexthash="3285165" %)
1566 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1567
1568 (% _msthash="506088" _msttexthash="3286179" %)
1569 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1570
1571 (% _msthash="506089" _msttexthash="4703803" %)
1572 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1573
1574 (% _msthash="506090" _msttexthash="4704999" %)
1575 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1576
1577 (% _msthash="506091" _msttexthash="1528683" %)
1578 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1579
1580 (% _msthash="506092" _msttexthash="757185" %)
1581 AT+NWKID:  Get or Set the Network ID
1582
1583 (% _msthash="506093" _msttexthash="1156597" %)
1584 AT+FCU:  Get or Set the Frame Counter Uplink
1585
1586 (% _msthash="506094" _msttexthash="1273987" %)
1587 AT+FCD:  Get or Set the Frame Counter Downlink
1588
1589 (% _msthash="506095" _msttexthash="859222" %)
1590 AT+CLASS:  Get or Set the Device Class
1591
1592 (% _msthash="506096" _msttexthash="384852" %)
1593 AT+JOIN:  Join network
1594
1595 (% _msthash="506097" _msttexthash="548626" %)
1596 AT+NJS:  Get the join status
1597
1598 (% _msthash="506098" _msttexthash="2546206" %)
1599 AT+SENDB:  Send hexadecimal data along with the application port
1600
1601 (% _msthash="506099" _msttexthash="1932307" %)
1602 AT+SEND:  Send text data along with the application port
1603
1604 (% _msthash="506100" _msttexthash="3560557" %)
1605 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
1606
1607 (% _msthash="506101" _msttexthash="1429701" %)
1608 AT+RECV:  Print last received data in raw format
1609
1610 (% _msthash="506102" _msttexthash="1735981" %)
1611 AT+VER:  Get current image version and Frequency Band
1612
1613 (% _msthash="506103" _msttexthash="1189474" %)
1614 AT+CFM:  Get or Set the confirmation mode (0-1)
1615
1616 (% _msthash="506104" _msttexthash="1718210" %)
1617 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1618
1619 (% _msthash="506105" _msttexthash="1339403" %)
1620 AT+SNR:  Get the SNR of the last received packet
1621
1622 (% _msthash="506106" _msttexthash="1452009" %)
1623 AT+RSSI:  Get the RSSI of the last received packet
1624
1625 (% _msthash="506107" _msttexthash="2768142" %)
1626 AT+TDC:  Get or set the application data transmission interval in ms
1627
1628 (% _msthash="506108" _msttexthash="1083914" %)
1629 AT+PORT:  Get or set the application port
1630
1631 (% _msthash="506109" _msttexthash="622440" %)
1632 AT+DISAT:  Disable AT commands
1633
1634 (% _msthash="506110" _msttexthash="868361" %)
1635 AT+PWORD: Set password, max 9 digits
1636
1637 (% _msthash="506111" _msttexthash="2210299" %)
1638 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
1639
1640 (% _msthash="506112" _msttexthash="2113462" %)
1641 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
1642
1643 (% _msthash="506113" _msttexthash="2087423" %)
1644 AT+PDTA:  Print the sector data from start page to stop page
1645
1646 (% _msthash="506114" _msttexthash="1063127" %)
1647 AT+PLDTA:  Print the last few sets of data
1648
1649 (% _msthash="506115" _msttexthash="1999426" %)
1650 AT+CLRDTA:  Clear the storage, record position back to 1st
1651
1652 (% _msthash="506116" _msttexthash="442130" %)
1653 AT+SLEEP:  Set sleep mode
1654
1655 (% _msthash="506117" _msttexthash="1080222" %)
1656 AT+EXT:  Get or Set external sensor model
1657
1658 (% _msthash="506118" _msttexthash="1309490" %)
1659 AT+BAT:  Get the current battery voltage in mV
1660
1661 (% _msthash="506119" _msttexthash="813891" %)
1662 AT+CFG:  Print all configurations
1663
1664 (% _msthash="506120" _msttexthash="551707" %)
1665 AT+WMOD:  Get or Set Work Mode
1666
1667 (% _msthash="506121" _msttexthash="2631499" %)
1668 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
1669
1670 (% _msthash="506122" _msttexthash="3907150" %)
1671 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
1672
1673 (% _msthash="506123" _msttexthash="854620" %)
1674 AT+SETCNT:  Set the count at present
1675
1676 (% _msthash="506124" _msttexthash="2554877" %)
1677 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
1678
1679 (% _msthash="506125" _msttexthash="771849" %)
1680 AT+RPL:  Get or set response level
1681
1682 (% _msthash="506126" _msttexthash="1484314" %)
1683 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
1684
1685 (% _msthash="506127" _msttexthash="741728" %)
1686 AT+LEAPSEC:  Get or Set Leap Second
1687
1688 (% _msthash="506128" _msttexthash="1694017" %)
1689 AT+SYNCMOD:  Get or Set time synchronization method
1690
1691 (% _msthash="506129" _msttexthash="2235948" %)
1692 AT+SYNCTDC:  Get or set time synchronization interval in day
1693
1694 (% _msthash="506130" _msttexthash="425542" %)
1695 AT+PID:  Get or set the PID
1696
1697
1698
1699 == 6.2 Where to use AT commands and Downlink commands ==
1700
1701
1702 **AT commands：**
1703
1704 [[image:image-20220620153708-1.png||height="603" width="723"]]
1705
1706
1707 **Downlink commands:**
1708
1709
1710
1711 (% style="color:blue" %)**TTN:**
1712
1713 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
1714
1715
1716
1717 (% style="color:blue" %)**Helium：**
1718
1719 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
1720
1721
1722
1723 (% style="color:blue" %)**Chirpstack: The downlink window will not be displayed until the network is accessed**
1724
1725
1726 [[image:image-20220615094850-6.png||_mstalt="433082"]]
1727
1728
1729 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
1730
1731
1732
1733 (% style="color:blue" %)**Aws:**
1734
1735 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1736
1737
1738
1739 == 6.3 How to change the uplink interval？ ==
1740
1741
1742 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);"]]
1743
1744
1745
1746 == 6.4 How to use TTL-USB to connect a PC to input AT commands? ==
1747
1748
1749 [[image:image-20220615153355-1.png]]
1750
1751 [[image:1655802313617-381.png]]
1752
1753
1754 (((
1755 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.
1756 )))
1757
1758
1759 Input password and ATZ to activate LHT65N,As shown below:
1760
1761 [[image:image-20220615154519-3.png||height="672" width="807"]]
1762
1763
1764
1765 == 6.5 How to use TTL-USB to connect PC to upgrade firmware? ==
1766
1767
1768 [[image:image-20220615153355-1.png]]
1769
1770
1771 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1772
1773 [[image:image-20220615170542-5.png]]
1774
1775
1776
1777 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1778
1779 (% _msthash="506146" _msttexthash="52173160" %)
1780 First connect the four lines；(% style="display:none" %)
1781
1782 [[image:image-20220621170938-1.png||height="413" width="419"]](% _mstvisible="1" %)，(% style="display:none" %)
1783
1784
1785 (% _mstvisible="1" %)Then use DuPont cable to short circuit port3 and port1, and then release them, so that the device enters bootlaod mode.
1786
1787 [[image:image-20220621170938-2.png]]
1788
1789
1790
1791 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1792
1793 [[image:image-20220615171334-6.png]]
1794
1795
1796 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1797
1798
1799 When this interface appears, it indicates that the download has been completed.
1800
1801 [[image:image-20220620160723-8.png]]
1802
1803
1804 Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
1805
1806
1807
1808 == 6.6 Using USB-TYPE-C to connect to the computer using the AT command ==
1809
1810
1811 [[image:image-20220623110706-1.png]]
1812
1813
1814 [[image:image-20220623112117-4.png||height="459" width="343"]]
1815
1816
1817 (((
1818 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.
1819 )))
1820
1821
1822 Input password and ATZ to activate LHT65N,As shown below:
1823
1824 [[image:image-20220615154519-3.png||height="672" width="807"]]
1825
1826
1827
1828 == 6.7 How to use  USB-TYPE-C to connect PC to upgrade firmware? ==
1829
1830
1831 [[image:image-20220623110706-1.png]]
1832
1833
1834 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1835
1836 [[image:image-20220615170542-5.png]]
1837
1838
1839
1840 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1841
1842 (% _msthash="506146" _msttexthash="52173160" %)
1843 First connect the four lines；
1844
1845 (% _msthash="506146" _msttexthash="52173160" %)
1846 [[image:image-20220623113959-5.png||height="528" width="397"]]
1847
1848 (% _msthash="506146" _msttexthash="52173160" %)
1849 Press and hold the start key to restart and enter  (% _mstvisible="1" %)bootlaod(%%) mode.
1850
1851
1852
1853 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1854
1855 [[image:image-20220615171334-6.png]]
1856
1857
1858 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1859
1860
1861 When this interface appears, it indicates that the download has been completed.
1862
1863 [[image:image-20220620160723-8.png]]
1864
1865
1866 Finally,restart reset device again
1867
1868
1869
1870 = 7. Order Info =
1871
1872
1873 Part Number: (% _mstvisible="4" style="color:#4f81bd" %)** LHT65N-XX-YY**
1874
1875 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
1876
1877 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
1878 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
1879 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
1880 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
1881 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
1882 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**US915**(%%): LoRaWAN US915 band
1883 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
1884 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
1885
1886 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
1887
1888 * (% style="color:red" %)**E3**(%%): External Temperature Probe
1889
1890
1891
1892 = 8. Packing Info =
1893
1894
1895 **Package Includes**:
1896
1897 * LHT65N Temperature & Humidity Sensor x 1
1898 * Optional external sensor
1899
1900 **Dimension and weight**:
1901
1902 * Device Size:  10 x 10 x 3.5 cm
1903 * Device Weight: 120.5g
1904
1905
1906
1907 = 9. Reference material =
1908
1909
1910 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
1911
1912
1913
1914 = 10. FCC Warning =
1915
1916
1917 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
1918
1919 (1) This device may not cause harmful interference；
1920
1921 (2) this device must accept any interference received, including interference that may cause undesired operation.
1922
1923
1924

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