Version 217.3 by Xiaoling on 2022/11/12 17:24
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9 (% _msthash="315238" _msttexthash="18964465" _mstvisible="3" %)**Table of Contents：**
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11 {{toc/}}
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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. 
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:
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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
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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 === 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
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193
194 (((
195 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.
196 )))
197
198 [[image:image-20220522233300-8.png||_mstalt="428389" _mstvisible="3" height="219" width="722"]]
199
200
201
202 == 2.4 Uplink Payload   ( Fport~=2) ==
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204
205 (((
206 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.
207 )))
208
209 (((
210 After each uplink, the (% _mstvisible="3" style="color:blue" %)**BLUE LED**(%%) will blink once.
211 )))
212
213 (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:390px" %)
214 |=(% style="width: 60px;" %)(((
215 **Size(bytes)**
216 )))|=(% style="width: 30px;" %)(((
217 **2**
218 )))|=(% style="width: 100px;" %)(((
219 **2**
220 )))|=(% style="width: 100px;" %)(((
221 **2**
222 )))|=(% style="width: 50px;" %)(((
223 **1**
224 )))|=(% style="width: 50px;" %)(((
225 **4**
226 )))
227 |(% style="width:97px" %)(((
228 **Value**
229 )))|(% style="width:39px" %)(((
230 [[BAT>>||anchor="H2.4.2BAT-BatteryInfo"]]
231 )))|(% style="width:100px" %)(((
232 (((
233 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
234 )))
235 )))|(% style="width:77px" %)(((
236 (((
237 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
238 )))
239 )))|(% style="width:47px" %)(((
240 [[Ext>>||anchor="H2.4.5Ext23"]] #
241 )))|(% style="width:51px" %)(((
242 [[Ext value>>||anchor="H2.4.6Extvalue"]]
243 )))
244
245 * The First 6 bytes: has fix meanings for every LHT65N.
246 * The 7th byte (EXT #): defines the external sensor model.
247 * 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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249
250
251 === 2.4.1 Decoder in TTN V3 ===
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254 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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256 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]]
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259 [[image:image-20220522234118-10.png||_mstalt="451464" _mstvisible="3" height="353" width="729"]]
260
261
262
263 === 2.4.2 BAT-Battery Info ===
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265
266 These two bytes of BAT include the battery state and the actually voltage
267
268 [[image:image-20220523152839-18.png||_mstalt="457613" _mstvisible="3"]]
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271 [[image:image-20220522235639-1.png||_mstalt="431392" _mstvisible="3" height="139" width="727"]]
272
273
274 Check the battery voltage for LHT65N.
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276 * BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
277 * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
278
279
280
281 === 2.4.3 Built-in Temperature ===
282
283
284 [[image:image-20220522235639-2.png||_mstalt="431756" _mstvisible="3" height="138" width="722"]]
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286 * Temperature:  0x0ABB/100=27.47℃
287
288 [[image:image-20220522235639-3.png||_mstalt="432120" _mstvisible="3"]]
289
290 * Temperature:  (0xF5C6-65536)/100=-26.18℃
291
292
293
294 === 2.4.4 Built-in Humidity ===
295
296
297 [[image:image-20220522235639-4.png||_mstalt="432484" _mstvisible="3" height="138" width="722"]]
298
299 * Humidity:    0x025C/10=60.4%
300
301
302
303 === 2.4.5 Ext # ===
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305
306 Bytes for External Sensor:
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308 [[image:image-20220523152822-17.png||_mstalt="454545" _mstvisible="3"]]
309
310
311
312 === 2.4.6 Ext value ===
313
314
315 ==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
316
317
318 [[image:image-20220522235639-5.png||_mstalt="432848" _mstvisible="3"]]
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321 * DS18B20 temp=0x0ADD/100=27.81℃
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323 The last 2 bytes of data are meaningless
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327 [[image:image-20220522235639-6.png||_mstalt="433212" _mstvisible="3"]]
328
329
330 * External temperature= (0xF54F-65536)/100=-27.37℃
331
332 The last 2 bytes of data are meaningless
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334 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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336
337
338 ==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
339
340
341 (((
342 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:
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344
345 (((
346
347 )))
348
349 (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:480px" %)
350 |=(% style="width: 50px;" %)(((
351 **Size(bytes)**
352 )))|=(% style="width: 70px;" %)(((
353 **2**
354 )))|=(% style="width: 120px;" %)(((
355 **2**
356 )))|=(% style="width: 120px;" %)(((
357 **2**
358 )))|=(% style="width: 50px;" %)(((
359 **1**
360 )))|=(% style="width: 70px;" %)(((
361 **4**
362 )))
363 |(% style="width:110px" %)(((
364 **Value**
365 )))|(% style="width:71px" %)(((
366 [[External temperature>>||anchor="H4.2SetExternalSensorMode"]]
367 )))|(% style="width:99px" %)(((
368 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
369 )))|(% style="width:132px" %)(((
370 BAT Status & [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
371 )))|(% style="width:54px" %)(((
372 Status & Ext
373 )))|(% style="width:64px" %)(((
374 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp"]]
375 )))
376
377 * **Battery status & Built-in Humidity**
378
379 (% _mstvisible="1" border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:461px" %)
380 |=(% style="width: 67px;" %)Bit(bit)|=(% style="width: 256px;" %)[15:14]|=(% style="width: 132px;" %)[11:0]
381 |(% style="width:67px" %)Value|(% style="width:256px" %)(((
382 BAT Status
383 00(b): Ultra Low ( BAT <= 2.50v)
384 01(b): Low  (2.50v <=BAT <= 2.55v)
385 10(b): OK   (2.55v <= BAT <=2.65v)
386 11(b): Good   (BAT >= 2.65v)
387 )))|(% style="width:132px" %)(((
388 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
389 )))
390
391 * **Status & Ext Byte**
392
393 (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:500px" %)
394 |=(% 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]**
395 |=(% 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)
396
397 * (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
398 * (% 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.
399 * (% 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)
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401
402
403 ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
404
405
406 In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
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408 be used to power the external ADC sensor; user can control the power on time for this
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410 (% style="color:blue" %)**sensor by setting:**
411
412 **AT+EXT=6,timeout**  (% _msthash="506085" _msttexthash="8782189" _mstvisible="3" style="color:red" %)**Time to power this sensor, from 0 ~~ 65535ms**
413
414 **For example:**
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416 AT+EXT=6,1000 will power this sensor for 1000ms before sampling the ADC value.
417
418
419 Or use **downlink command A2** to set the same.
420
421 The measuring range of the node is only about 0.1V to 1.1V The voltage resolution is about 0.24mv.
422
423 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.
424
425 [[image:image-20220628150112-1.png||height="241" width="285"]]
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428 When ADC_IN1 pin is connected to GND or suspended, ADC value is 0
429
430 [[image:image-20220628150714-4.png]]
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433 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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436 1) The minimum range is about 0.1V. Each chip has internal calibration, so this value is close to 0.1V
437
438 [[image:image-20220628151005-5.png]]
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441 2) The maximum range is about 1.1V. Each chip has internal calibration, so this value is close to 1.1v
442
443 [[image:image-20220628151056-6.png]]
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446 3) Within range
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448 [[image:image-20220628151143-7.png]]
449
450
451
452 ==== 2.4.6.4 Ext~=2 TMP117 Sensor （Since Firmware v1.3） ====
453
454
455 [[image:image-20220927095645-1.png||height="534" width="460"]]
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457
458 (% style="color:blue" %)**Ext=2,Temperature Sensor(TMP117)：**
459
460 [[image:image-20220906102307-7.png]]
461
462
463 (% style="color:blue" %)**Interrupt Mode and Counting Mode:**
464
465 The external cable NE2 can be use for MOD4 and MOD8
466
467
468
469 ==== 2.4.6.5 Ext~=4 Interrupt Mode （Since Firmware v1.3） ====
470
471
472 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will send an uplink when there is a trigger.**
473
474
475 (% style="color:blue" %)**Interrupt Mode can be used to connect to external interrupt sensors such as:**
476
477 (% style="color:#037691" %)**Case 1: Door Sensor.** (%%)3.3v Out for such sensor is just to detect Open/Close.
478
479 In Open State, the power consumption is the same as if there is no probe
480
481 In Close state, the power consumption will be 3uA higher than normal.
482
483 [[image:image-20220906100852-1.png||height="205" width="377"]]
484
485
486 Ext=4,Interrupt Sensor：
487
488 (% border="1.5" cellpadding="4" cellspacing="4" style="background-color:#ffffcc; color:green; height:6px; width:478px" %)
489 |(% style="width:101px" %)(((
490 AT+EXT=4,1
491 )))|(% style="width:373px" %)(((
492 Sent uplink packet in both rising and falling interrupt
493 )))
494 |(% style="width:101px" %)(((
495 AT+EXT=4,2
496 )))|(% style="width:373px" %)(((
497 Sent uplink packet only in falling interrupt
498 )))
499 |(% style="width:101px" %)(((
500 AT+EXT=4,3
501 )))|(% style="width:373px" %)(((
502 Sent uplink packet only in rising interrupt
503 )))
504
505 Trigger by falling edge:
506
507 [[image:image-20220906101145-2.png]]
508
509
510 Trigger by raising edge：
511
512 [[image:image-20220906101145-3.png]]
513
514
515
516 ==== 2.4.6.6 Ext~=8 Counting Mode（Since Firmware v1.3） ====
517
518
519 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will count for every interrupt and uplink periodically.**
520
521
522 (% 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.
523
524 [[image:image-20220906101320-4.png||height="366" width="698"]]
525
526
527 (% 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
528
529 [[image:image-20220906101320-5.png||height="353" width="696"]]
530
531
532 Ext=8, Counting Sensor ( 4 bytes)：
533
534 (% border="2" cellpadding="4" cellspacing="4" style="background-color:#ffffcc; color:green; height:6px; width:381px" %)
535 |(% style="width:138px" %)(((
536 AT+EXT=8,0
537 )))|(% style="width:240px" %)(((
538 Count at falling interrupt
539 )))
540 |(% style="width:138px" %)(((
541 AT+EXT=8,1
542 )))|(% style="width:240px" %)(((
543 Count at rising interrupt
544 )))
545 |(% style="width:138px" %)(((
546 AT+SETCNT=60
547 )))|(% style="width:240px" %)(((
548 Sent current count to 60
549 )))
550
551 [[image:image-20220906101320-6.png]]
552
553
554 (% style="color:blue" %)**A2 downlink Command：**
555
556 A2 02:  Same as AT+EXT=2 (AT+EXT= second byte)
557
558 A2 06 01 F4:  Same as AT+EXT=6,500 (AT+EXT= second byte, third and fourth bytes)
559
560 A2 04 02:  Same as AT+EXT=4,2 (AT+EXT= second byte, third byte)
561
562 A2 08 01 00:  Same as AT+EXT=8,0 (AT+EXT= second byte, fourth byte)
563
564 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)
565
566
567
568 == 2.5 Show data on Datacake ==
569
570
571 (((
572 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:
573 )))
574
575 (((
576
577 )))
578
579 (((
580 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the LoRaWAN network.
581 )))
582
583 (((
584 (% 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.
585 )))
586
587 (((
588
589 )))
590
591 (((
592 Add Datacake:
593 )))
594
595
596 [[image:image-20220523000825-7.png||_mstalt="429884" _mstvisible="3" height="262" width="583"]]
597
598
599
600 Select default key as Access Key:
601
602
603 [[image:image-20220523000825-8.png||_mstalt="430248" _mstvisible="3" height="453" width="406"]]
604
605
606 In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/||_mstvisible="2"]]) , add LHT65 device.
607
608
609 [[image:image-20220523000825-9.png||_mstalt="430612" _mstvisible="3" height="366" width="392"]]
610
611
612 [[image:image-20220523000825-10.png||_mstalt="450619" _mstvisible="3" height="413" width="728"]]
613
614
615
616 == 2.6 Datalog Feature ==
617
618
619 (((
620 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.
621 )))
622
623
624
625 === 2.6.1 Ways to get datalog via LoRaWAN ===
626
627
628 There are two methods:
629
630 (% style="color:blue" %)**Method 1:** (%%)IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specified time range.
631
632
633 (% 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.
634
635
636 (% style="color:red" %)**Note for method 2:**
637
638 * a) LHT65N will do an ACK check for data records sending to make sure every data arrive server.
639 * 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.
640
641 Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
642
643
644 [[image:image-20220703111700-2.png||height="381" width="1119"]]
645
646
647
648 === 2.6.2 Unix TimeStamp ===
649
650
651 LHT65N uses Unix TimeStamp format based on
652
653
654 [[image:image-20220523001219-11.png||_mstalt="450450" _mstvisible="3" height="97" width="627"]]
655
656
657
658 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/||_mstvisible="3"]] :
659
660 Below is the converter example
661
662 [[image:image-20220523001219-12.png||_mstalt="450827" _mstvisible="3" height="298" width="720"]]
663
664 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
665
666
667
668 === 2.6.3 Set Device Time ===
669
670
671 (((
672 (% style="color:blue" %)**There are two ways to set device's time:**
673 )))
674
675 (((
676 **1.  Through LoRaWAN MAC Command (Default settings)**
677 )))
678
679 (((
680 User need to set SYNCMOD=1 to enable sync time via MAC command.
681 )))
682
683 (((
684 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).
685 )))
686
687 (((
688 (% 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.**
689 )))
690
691
692
693 (((
694 **2. Manually Set Time**
695 )))
696
697 (((
698 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
699 )))
700
701
702
703 === 2.6.4 Poll sensor value ===
704
705
706 User can poll sensor value based on timestamps from the server. Below is the downlink command.
707
708 [[image:image-20220523152302-15.png||_mstalt="451581" _mstvisible="3"]]
709
710
711 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.
712
713 For example, downlink command **31 5FC5F350 5FC6 0160 05**
714
715 Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00’s data
716
717 Uplink Internal =5s，means LHT65N will send one packet every 5s. range 5~~255s.
718
719
720
721 === 2.6.5 Datalog Uplink payload ===
722
723
724 The Datalog poll reply uplink will use below payload format.
725
726 **Retrieval data payload:**
727
728 (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:480px" %)
729 |=(% style="width: 60px;" %)(((
730 **Size(bytes)**
731 )))|=(% style="width: 90px;" %)**2**|=(% style="width: 90px;" %)**2**|=(% style="width: 70px;" %)**2**|=(% style="width: 100px;" %)**1**|=(% style="width: 70px;" %)**4**
732 |(% 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"]]
733
734 **Poll message flag & Ext:**
735
736 [[image:image-20221006192726-1.png||height="112" width="754"]]
737
738 (% 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)
739
740 (% style="color:blue" %)**Poll Message Flag**(%%): 1: This message is a poll message reply.
741
742 * Poll Message Flag is set to 1.
743
744 * Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
745
746 For example, in US915 band, the max payload for different DR is:
747
748 (% style="color:blue" %)**a) DR0:** (%%)max is 11 bytes so one entry of data
749
750 (% style="color:blue" %)**b) DR1:**(%%) max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
751
752 (% style="color:blue" %)**c) DR2:**(%%) total payload includes 11 entries of data
753
754 (% style="color:blue" %)**d) DR3: **(%%)total payload includes 22 entries of data.
755
756 If devise doesn't have any data in the polling time. Device will uplink 11 bytes of 0   
757
758
759 **Example:**
760
761 If LHT65N has below data inside Flash:
762
763 [[image:image-20220523144455-1.png||_mstalt="430040" _mstvisible="3" height="335" width="735"]]
764
765
766 If user sends below downlink command: (% style="background-color:yellow" %)3160065F9760066DA705
767
768 Where : Start time: 60065F97 = time 21/1/19 04:27:03
769
770 Stop time: 60066DA7= time 21/1/19 05:27:03
771
772
773 **LHT65N will uplink this payload.**
774
775 [[image:image-20220523001219-13.png||_mstalt="451204" _mstvisible="3" height="421" style="text-align:left" width="727"]]
776
777
778 __**7FFF089801464160065F97**__ **__7FFF__ __088E__ __014B__ __41__ __60066009__** 7FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
779
780 Where the first 11 bytes is for the first entry:
781
782 7FFF089801464160065F97
783
784 Ext sensor data=0x7FFF/100=327.67
785
786 Temp=0x088E/100=22.00
787
788 Hum=0x014B/10=32.6
789
790 poll message flag & Ext=0x41,means reply data,Ext=1
791
792 Unix time is 0x60066009=1611030423s=21/1/19 04:27:03
793
794
795
796 == 2.7 Alarm Mode & Feature "Multi sampling, one uplink" ==
797
798
799 (((
800 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.
801 )))
802
803 (((
804 (% style="color:red" %)**Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.**
805
806
807
808 === 2.7.1 ALARM MODE ( Since v1.3.1 firmware) ===
809
810
811 **Internal GXHT30 temperature alarm**
812
813 (((
814 (% class="box infomessage" %)
815 (((
816 **AT+WMOD=3**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)
817
818 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
819
820 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
821
822 **AT+ARTEMP=？ **:  Gets the alarm range of the internal temperature sensor(% _mstvisible="3" style="display:none" %)
823
824 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
825
826 **AT+LEDALARM=1** :       Enable LED visual Alarm.
827 )))
828 )))
829
830 (% style="color:#4f81bd" %)**Downlink Command:**
831
832 AT+WMOD=1:  A501  ,  AT+WMOD=0 :  A600
833
834 AT+CITEMP=1 : A60001
835
836 AT+ARTEMP=1,60  :  A70001003C
837
838 AT+ARTEMP=-16,60 :  A7FFF0003C
839
840 AT+LEDALARM=1  :  3601
841
842
843 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
844
845 Total bytes: 8 bytes
846
847 **Example: **AA0100010001003C
848
849 WMOD=01
850
851 CITEMP=0001
852
853 TEMPlow=0001
854
855 TEMPhigh=003C
856
857
858 **DS18B20 and TMP117 Threshold Alarm**
859
860 **~ AT+WMOD=1,60,-10,20**
861
862 (% style="color:#4f81bd" %)**Downlink Command:**
863
864 **Example: **A5013CFC180014
865
866 MOD=01
867
868 CITEMP=3C(S)
869
870 TEMPlow=FC18
871
872 TEMPhigh=0014
873
874
875 **Fluctuation alarm for DS18B20 and TMP117**
876
877 **AT+WMOD=2,60,5** 
878
879 (% style="color:#4f81bd" %)**Downlink Command:**
880
881 **Example: **A5023C05
882
883 MOD=02
884
885 CITEMP=3C(S)
886
887 temperature fluctuation=05
888
889
890 ==== **Sampling multiple times and uplink together** ====
891
892 **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 -16 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.
893
894 (% style="color:#4f81bd" %)**Downlink Command:**
895
896 **Example: **A50301003C14FFF0002001
897
898 MOD=03
899
900 EXT=01
901
902 CITEMP=003C(S)
903
904 Total number of acquisitions=14
905
906 TEMPlow=FFF0
907
908 TEMPhigh=0020
909
910 ARTEMP=01
911
912
913 **Uplink payload( Fport=3)**
914
915 **Example: **CBEA0109920A4109C4
916
917 BatV=CBEA
918
919 EXT=01
920
921 Temp1=0992  ~/~/ 24.50℃
922
923 Temp2=0A41  ~/~/ 26.25℃
924
925 Temp3=09C4  ~/~/ 25.00℃
926
927
928 (% style="color:red" %)**Note: This uplink will automatically select the appropriate DR according to the data length**
929
930 (% style="color:red" %)** In this mode, the temperature resolution of ds18b20 is 0.25℃ to save power consumption**
931 )))
932
933
934 === 2.7.2 ALARM MODE ( Before v1.3.1 firmware) ===
935
936
937 (% _mstvisible="1" class="box infomessage" %)
938 (((
939 (((
940 **AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)
941 )))
942
943 (((
944 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
945 )))
946
947 (((
948 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
949 )))
950
951 (((
952 **AT+ARTEMP=？ **:  Gets the alarm range of the internal temperature sensor(% _mstvisible="3" style="display:none" %)
953 )))
954
955 (((
956 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
957 )))
958 )))
959
960 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
961
962 Total bytes: 8 bytes
963
964 **Example:**AA0100010001003C
965
966 WMOD=01
967
968 CITEMP=0001
969
970 TEMPlow=0001
971
972 TEMPhigh=003C
973
974
975
976 == 2.8 LED Indicator ==
977
978
979 The LHT65 has a triple color LED which for easy showing different stage .
980
981 While user press ACT button, the LED will work as per LED status with ACT button.
982
983 In a normal working state:
984
985 * For each uplink, the BLUE LED or RED LED will blink once.
986 BLUE LED when external sensor is connected.
987 * RED LED when external sensor is not connected
988 * For each success downlink, the PURPLE LED will blink once
989
990
991 == 2.9 installation ==
992
993
994 (% _mstvisible="1" %)
995 [[image:image-20220516231650-1.png||_mstalt="428597" _mstvisible="3" height="436" width="428"]]
996
997
998
999 = 3. Sensors and Accessories =
1000
1001
1002 == 3.1 E2 Extension Cable ==
1003
1004
1005 [[image:image-20220619092222-1.png||height="182" width="188"]][[image:image-20220619092313-2.png||height="182" width="173"]]
1006
1007
1008 **1m long breakout cable for LHT65N. Features:**
1009
1010 * (((
1011 Use for AT Command， works for both LHT52/LHT65N
1012 )))
1013 * (((
1014 Update firmware for LHT65N, works for both LHT52/LHT65N
1015 )))
1016 * (((
1017 Supports ADC mode to monitor external ADC
1018 )))
1019 * (((
1020 Supports Interrupt mode
1021 )))
1022 * (((
1023 Exposed All pins from the LHT65N Type-C connector.
1024
1025
1026
1027 )))
1028
1029 [[image:image-20220619092421-3.png||height="371" width="529"]]
1030
1031
1032
1033
1034 == 3.2 E3 Temperature Probe ==
1035
1036
1037 [[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"]]
1038
1039
1040 Temperature sensor with 2 meters cable long
1041
1042 * Resolution: 0.0625 °C
1043 * ±0.5°C accuracy from -10°C to +85°C
1044 * ±2°C accuracy from -55°C to +125°C
1045 * Operating Range: -40 ~~ 125 °C
1046 * Working voltage 2.35v ~~ 5v
1047
1048
1049
1050 = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1051
1052
1053 (((
1054 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
1055 )))
1056
1057 * (((
1058 AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
1059 )))
1060
1061 * (((
1062 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
1063 )))
1064
1065 (((
1066 There are two kinds of commands to configure LHT65N, they are:
1067 )))
1068
1069 * (((
1070 (% style="color:#4f81bd" %)**General Commands**.
1071 )))
1072
1073 (((
1074 These commands are to configure:
1075 )))
1076
1077 1. (((
1078 General system settings like: uplink interval.
1079 )))
1080 1. (((
1081 LoRaWAN protocol & radio-related commands.
1082 )))
1083
1084 (((
1085 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]]
1086 )))
1087
1088 * (((
1089 (% style="color:#4f81bd" %)**Commands special design for LHT65N**
1090 )))
1091
1092 (((
1093 These commands are only valid for LHT65N, as below:
1094 )))
1095
1096
1097
1098 == 4.1 Set Transmit Interval Time ==
1099
1100
1101 Feature: Change LoRaWAN End Node Transmit Interval.
1102
1103
1104 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
1105
1106 [[image:image-20220523150701-2.png||_mstalt="427453" _mstvisible="3"]]
1107
1108
1109 (% style="color:#4f81bd" %)**Downlink Command: 0x01**
1110
1111 Format: Command Code (0x01) followed by 3 bytes time value.
1112
1113 If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.
1114
1115 * **Example 1**: Downlink Payload: 0100001E  ~/~/ Set Transmit Interval (TDC) = 30 seconds
1116
1117 * **Example 2**: Downlink Payload: 0100003C  ~/~/ Set Transmit Interval (TDC) = 60 seconds
1118
1119
1120
1121 == 4.2 Set External Sensor Mode ==
1122
1123
1124 Feature: Change External Sensor Mode.
1125
1126
1127 (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1128
1129 [[image:image-20220523150759-3.png||_mstalt="432146" _mstvisible="3"]]
1130
1131
1132 (% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1133
1134 Total bytes: 2 ~~ 5 bytes
1135
1136 **Example:**
1137
1138 * 0xA201: Set external sensor type to E1
1139
1140 * 0xA209: Same as AT+EXT=9
1141
1142 * 0xA20702003c: Same as AT+SETCNT=60
1143
1144
1145
1146 == 4.3 Enable/Disable uplink Temperature probe ID ==
1147
1148
1149 (((
1150 Feature: If PID is enabled, device will send the temperature probe ID on:
1151 )))
1152
1153 * (((
1154 First Packet after OTAA Join
1155 )))
1156 * (((
1157 Every 24 hours since the first packet.
1158 )))
1159
1160 (((
1161 PID is default set to disable (0)
1162
1163
1164 )))
1165
1166 (% style="color:#4f81bd" %)**AT Command:**
1167
1168 [[image:image-20220523150928-4.png||_mstalt="431821" _mstvisible="3"]]
1169
1170
1171 (% style="color:#4f81bd" %)**Downlink Command:**
1172
1173 * **0xA800**  **~-~->** AT+PID=0
1174 * **0xA801**     **~-~->** AT+PID=1
1175
1176
1177
1178 == 4.4 Set Password ==
1179
1180
1181 Feature: Set device password, max 9 digits
1182
1183
1184 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1185
1186 [[image:image-20220523151052-5.png||_mstalt="428623" _mstvisible="3"]]
1187
1188
1189 (% style="color:#4f81bd" %)**Downlink Command:**
1190
1191 No downlink command for this feature.
1192
1193
1194
1195 == 4.5 Quit AT Command ==
1196
1197
1198 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1199
1200
1201 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1202
1203 [[image:image-20220523151132-6.png||_mstalt="428649" _mstvisible="3"]]
1204
1205
1206 (% style="color:#4f81bd" %)**Downlink Command:**
1207
1208 No downlink command for this feature.
1209
1210
1211
1212 == 4.6 Set to sleep mode ==
1213
1214
1215 Feature: Set device to sleep mode
1216
1217 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1218 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1219
1220 (% _msthash="315251" _msttexthash="289783" style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1221
1222 [[image:image-20220523151218-7.png||_mstalt="430703" _mstvisible="3"]]
1223
1224
1225 (% _msthash="315252" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1226
1227 * There is no downlink command to set to Sleep mode.
1228
1229
1230
1231 == 4.7 Set system time ==
1232
1233
1234 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1235
1236
1237 (% _msthash="315253" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1238
1239 [[image:image-20220523151253-8.png||_mstalt="430677" _mstvisible="3"]]
1240
1241
1242 (% _msthash="315254" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1243
1244 0x306007806000  ~/~/  Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1245
1246
1247
1248 == 4.8 Set Time Sync Mode ==
1249
1250
1251 (((
1252 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1253 )))
1254
1255 (((
1256 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.
1257
1258
1259 )))
1260
1261 (% _msthash="506058" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1262
1263 [[image:image-20220523151336-9.png||_mstalt="431717" _mstvisible="3"]]
1264
1265
1266 (% style="color:#4f81bd" %)**Downlink Command:**
1267
1268 0x28 01  ~/~/  Same As AT+SYNCMOD=1
1269 0x28 00  ~/~/  Same As AT+SYNCMOD=0
1270
1271
1272
1273 == 4.9 Set Time Sync Interval ==
1274
1275
1276 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1277
1278
1279 (% _msthash="315256" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1280
1281 [[image:image-20220523151411-10.png||_mstalt="449696" _mstvisible="3"]]
1282
1283
1284 (% _msthash="315257" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1285
1286 **0x29 0A**  ~/~/ Same as AT+SYNCTDC=0x0A
1287
1288
1289
1290 == 4.10 Print data entries base on page. ==
1291
1292
1293 Feature: Print the sector data from start page to stop page (max is 416 pages).
1294
1295
1296 (% _msthash="315258" _msttexthash="264953" style="color:#4f81bd" %)**AT Command: AT+PDTA**
1297
1298 [[image:image-20220523151450-11.png||_mstalt="451035" _mstvisible="3"]]
1299
1300
1301 (% _msthash="315259" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1302
1303 No downlink commands for feature
1304
1305
1306
1307 == 4.11 Print last few data entries. ==
1308
1309
1310 Feature: Print the last few data entries
1311
1312
1313 (% _msthash="315260" _msttexthash="288522" style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1314
1315 [[image:image-20220523151524-12.png||_mstalt="452101" _mstvisible="3"]]
1316
1317
1318 (% _msthash="315261" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1319
1320 No downlink commands for feature
1321
1322
1323
1324 == 4.12 Clear Flash Record ==
1325
1326
1327 Feature: Clear flash storage for data log feature.
1328
1329
1330 (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1331
1332 [[image:image-20220523151556-13.png||_mstalt="454129" _mstvisible="3"]]
1333
1334
1335 (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1336
1337 * Example: 0xA301  ~/~/  Same as AT+CLRDTA
1338
1339
1340
1341 == 4.13 Auto Send None-ACK messages ==
1342
1343
1344 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.
1345
1346
1347 (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1348
1349 The default factory setting is 0
1350
1351 (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:367px" %)
1352 |=(% style="width: 158px;" %)**Command Example**|=(% style="width: 118px;" %)**Function**|=(% style="width: 87px;" %)**Response**
1353 |(% style="width:158px" %)AT+PNACKMD=1|(% style="width:118px" %)Poll None-ACK message|(% style="width:87px" %)OK
1354
1355 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1356
1357 * Example: 0x3401  ~/~/  Same as AT+PNACKMD=1
1358
1359
1360
1361 == 4.14 Modified WMOD command for external sensor TMP117 or DS18B20 temperature alarm（Since firmware 1.3.0） ==
1362
1363
1364 Feature: Set internal and external temperature sensor alarms.
1365
1366 (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:500px" %)
1367 |=(% style="width: 250px;" %)**Command Example**|=(% style="width: 200px;" %)**Function**|=(% style="width: 50px;" %)**Response**
1368 |(% style="width:268px" %)AT+WMOD=parameter1,parameter2,parameter3,parameter4|(% style="width:255px" %)Set internal and external temperature sensor alarms|(% style="width:181px" %)OK
1369
1370 (% style="color:#037691" %)**AT+WMOD=parameter1,parameter2,parameter3,parameter4**
1371
1372 (% style="color:#037691" %)**Parameter 1**(%%):  Alarm mode:
1373
1374 0): Cancel
1375
1376 1): Threshold alarm
1377
1378 2): Fluctuation alarm
1379
1380
1381 (% style="color:#037691" %)** Parameter 2**(%%):  Sampling time. Unit: seconds, up to 255 seconds.
1382
1383 (% 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.**
1384
1385
1386 (% style="color:#037691" %) **Parameter 3 and parameter 4:**
1387
1388 1):  If Alarm Mode is set to 1: Parameter 3 and parameter 4 are valid, as before, they represent low temperature and high temperature.
1389
1390 Such as AT+WMOD=1,60,45,105, it means high and low temperature alarm.
1391
1392
1393 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.
1394
1395 Such as AT+WMOD=2,10,2,it means that it is a fluctuation alarm.
1396
1397 If the difference between the current collected temperature and the last Uplin is ±2 degrees, the alarm will be issued.
1398
1399
1400 (% style="color:#4f81bd" %)**Downlink Command: 0xA5**
1401
1402 0xA5 00 ~-~- AT+WMOD=0.
1403
1404 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 )
1405
1406 0XA5 01 0A F9 C0 29 04 ~-~-AT+WMOD=1,10,-16,105(Need to convert -16 to -1600 for calculation，-1600(DEC)=FFFFFFFFFFFFF9C0(HEX)  FFFFFFFFFFFFF9C0(HEX) +10000(HEX)=F9C0(HEX))
1407
1408 0xA5 02 0A 02 ~-~- AT+WMOD=2,10,2  (AT+WMOD = second byte, third byte, fourth byte)
1409
1410 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.
1411
1412
1413
1414 = 5. Battery & How to replace =
1415
1416
1417 == 5.1 Battery Type ==
1418
1419
1420
1421 (((
1422 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.
1423 )))
1424
1425
1426
1427 (((
1428 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1429 [[image:image-20220515075034-1.png||_mstalt="428961" _mstvisible="4" height="208" width="644"]]
1430 )))
1431
1432 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1433
1434
1435
1436 == 5.2 Replace Battery ==
1437
1438
1439 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.
1440
1441 [[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"]]
1442
1443
1444
1445 == 5.3 Battery Life Analyze ==
1446
1447
1448 (((
1449 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:
1450 [[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]]
1451 )))
1452
1453
1454 (((
1455 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]]
1456 )))
1457
1458
1459
1460 = 6. FAQ =
1461
1462
1463 == 6.1 How to use AT Command? ==
1464
1465
1466 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.
1467
1468 [[image:image-20220530085651-1.png||_mstalt="429949"]]
1469
1470
1471 (% _msthash="506061" _msttexthash="170755" %)**Connection:**
1472
1473 * (% style="background-color:yellow" %)**USB to TTL GND <~-~->GND**
1474 * (% style="background-color:yellow" %)**USB to TTL RXD <~-~-> D+**
1475 * (% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1476
1477 (((
1478 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.
1479 )))
1480
1481
1482 Input password and ATZ to activate LHT65N,As shown below:
1483
1484 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1485
1486
1487 (% _msthash="506066" _msttexthash="544869" %)
1488 AT Command List is as below:
1489
1490 (% _msthash="506067" _msttexthash="361920" %)
1491 AT+<CMD>? :  Help on <CMD>
1492
1493 (% _msthash="506068" _msttexthash="243061" %)
1494 AT+<CMD> :  Run <CMD>
1495
1496 (% _msthash="506069" _msttexthash="704197" %)
1497 AT+<CMD>=<value> :  Set the value
1498
1499 (% _msthash="506070" _msttexthash="455676" %)
1500 AT+<CMD>=? :  Get the value
1501
1502 (% _msthash="506071" _msttexthash="670553" %)
1503 AT+DEBUG:  Set more info output
1504
1505 (% _msthash="506072" _msttexthash="485888" %)
1506 ATZ:  Trig a reset of the MCU
1507
1508 (% _msthash="506073" _msttexthash="2068872" %)
1509 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1510
1511 (% _msthash="506074" _msttexthash="689169" %)
1512 AT+DEUI:  Get or Set the Device EUI
1513
1514 (% _msthash="506075" _msttexthash="960414" %)
1515 AT+DADDR:  Get or Set the Device Address
1516
1517 (% _msthash="506076" _msttexthash="1079897" %)
1518 AT+APPKEY:  Get or Set the Application Key
1519
1520 (% _msthash="506077" _msttexthash="1326143" %)
1521 AT+NWKSKEY:  Get or Set the Network Session Key
1522
1523 (% _msthash="506078" _msttexthash="1573000" %)
1524 AT+APPSKEY:  Get or Set the Application Session Key
1525
1526 (% _msthash="506079" _msttexthash="1041729" %)
1527 AT+APPEUI:  Get or Set the Application EUI
1528
1529 (% _msthash="506080" _msttexthash="2104206" %)
1530 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1531
1532 (% _msthash="506081" _msttexthash="3369288" %)
1533 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1534
1535 (% _msthash="506082" _msttexthash="1894529" %)
1536 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1537
1538 (% _msthash="506083" _msttexthash="3864172" %)
1539 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1540
1541 (% _msthash="506084" _msttexthash="1712204" %)
1542 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1543
1544 (% _msthash="506085" _msttexthash="1281202" %)
1545 AT+RX2FQ:  Get or Set the Rx2 window frequency
1546
1547 (% _msthash="506086" _msttexthash="2796781" %)
1548 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1549
1550 (% _msthash="506087" _msttexthash="3285165" %)
1551 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1552
1553 (% _msthash="506088" _msttexthash="3286179" %)
1554 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1555
1556 (% _msthash="506089" _msttexthash="4703803" %)
1557 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1558
1559 (% _msthash="506090" _msttexthash="4704999" %)
1560 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1561
1562 (% _msthash="506091" _msttexthash="1528683" %)
1563 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1564
1565 (% _msthash="506092" _msttexthash="757185" %)
1566 AT+NWKID:  Get or Set the Network ID
1567
1568 (% _msthash="506093" _msttexthash="1156597" %)
1569 AT+FCU:  Get or Set the Frame Counter Uplink
1570
1571 (% _msthash="506094" _msttexthash="1273987" %)
1572 AT+FCD:  Get or Set the Frame Counter Downlink
1573
1574 (% _msthash="506095" _msttexthash="859222" %)
1575 AT+CLASS:  Get or Set the Device Class
1576
1577 (% _msthash="506096" _msttexthash="384852" %)
1578 AT+JOIN:  Join network
1579
1580 (% _msthash="506097" _msttexthash="548626" %)
1581 AT+NJS:  Get the join status
1582
1583 (% _msthash="506098" _msttexthash="2546206" %)
1584 AT+SENDB:  Send hexadecimal data along with the application port
1585
1586 (% _msthash="506099" _msttexthash="1932307" %)
1587 AT+SEND:  Send text data along with the application port
1588
1589 (% _msthash="506100" _msttexthash="3560557" %)
1590 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
1591
1592 (% _msthash="506101" _msttexthash="1429701" %)
1593 AT+RECV:  Print last received data in raw format
1594
1595 (% _msthash="506102" _msttexthash="1735981" %)
1596 AT+VER:  Get current image version and Frequency Band
1597
1598 (% _msthash="506103" _msttexthash="1189474" %)
1599 AT+CFM:  Get or Set the confirmation mode (0-1)
1600
1601 (% _msthash="506104" _msttexthash="1718210" %)
1602 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1603
1604 (% _msthash="506105" _msttexthash="1339403" %)
1605 AT+SNR:  Get the SNR of the last received packet
1606
1607 (% _msthash="506106" _msttexthash="1452009" %)
1608 AT+RSSI:  Get the RSSI of the last received packet
1609
1610 (% _msthash="506107" _msttexthash="2768142" %)
1611 AT+TDC:  Get or set the application data transmission interval in ms
1612
1613 (% _msthash="506108" _msttexthash="1083914" %)
1614 AT+PORT:  Get or set the application port
1615
1616 (% _msthash="506109" _msttexthash="622440" %)
1617 AT+DISAT:  Disable AT commands
1618
1619 (% _msthash="506110" _msttexthash="868361" %)
1620 AT+PWORD: Set password, max 9 digits
1621
1622 (% _msthash="506111" _msttexthash="2210299" %)
1623 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
1624
1625 (% _msthash="506112" _msttexthash="2113462" %)
1626 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
1627
1628 (% _msthash="506113" _msttexthash="2087423" %)
1629 AT+PDTA:  Print the sector data from start page to stop page
1630
1631 (% _msthash="506114" _msttexthash="1063127" %)
1632 AT+PLDTA:  Print the last few sets of data
1633
1634 (% _msthash="506115" _msttexthash="1999426" %)
1635 AT+CLRDTA:  Clear the storage, record position back to 1st
1636
1637 (% _msthash="506116" _msttexthash="442130" %)
1638 AT+SLEEP:  Set sleep mode
1639
1640 (% _msthash="506117" _msttexthash="1080222" %)
1641 AT+EXT:  Get or Set external sensor model
1642
1643 (% _msthash="506118" _msttexthash="1309490" %)
1644 AT+BAT:  Get the current battery voltage in mV
1645
1646 (% _msthash="506119" _msttexthash="813891" %)
1647 AT+CFG:  Print all configurations
1648
1649 (% _msthash="506120" _msttexthash="551707" %)
1650 AT+WMOD:  Get or Set Work Mode
1651
1652 (% _msthash="506121" _msttexthash="2631499" %)
1653 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
1654
1655 (% _msthash="506122" _msttexthash="3907150" %)
1656 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
1657
1658 (% _msthash="506123" _msttexthash="854620" %)
1659 AT+SETCNT:  Set the count at present
1660
1661 (% _msthash="506124" _msttexthash="2554877" %)
1662 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
1663
1664 (% _msthash="506125" _msttexthash="771849" %)
1665 AT+RPL:  Get or set response level
1666
1667 (% _msthash="506126" _msttexthash="1484314" %)
1668 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
1669
1670 (% _msthash="506127" _msttexthash="741728" %)
1671 AT+LEAPSEC:  Get or Set Leap Second
1672
1673 (% _msthash="506128" _msttexthash="1694017" %)
1674 AT+SYNCMOD:  Get or Set time synchronization method
1675
1676 (% _msthash="506129" _msttexthash="2235948" %)
1677 AT+SYNCTDC:  Get or set time synchronization interval in day
1678
1679 (% _msthash="506130" _msttexthash="425542" %)
1680 AT+PID:  Get or set the PID
1681
1682
1683
1684 == 6.2 Where to use AT commands and Downlink commands ==
1685
1686
1687 **AT commands：**
1688
1689 [[image:image-20220620153708-1.png||height="603" width="723"]]
1690
1691
1692 **Downlink commands:**
1693
1694
1695
1696 (% style="color:blue" %)**TTN:**
1697
1698 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
1699
1700
1701
1702 (% style="color:blue" %)**Helium：**
1703
1704 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
1705
1706
1707
1708 (% style="color:blue" %)**Chirpstack: The downlink window will not be displayed until the network is accessed**
1709
1710
1711 [[image:image-20220615094850-6.png||_mstalt="433082"]]
1712
1713
1714 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
1715
1716
1717
1718 (% style="color:blue" %)**Aws:**
1719
1720 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1721
1722
1723
1724 == 6.3 How to change the uplink interval？ ==
1725
1726
1727 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);"]]
1728
1729
1730
1731 == 6.4 How to use TTL-USB to connect a PC to input AT commands? ==
1732
1733
1734 [[image:image-20220615153355-1.png]]
1735
1736 [[image:1655802313617-381.png]]
1737
1738
1739 (((
1740 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.
1741 )))
1742
1743
1744 Input password and ATZ to activate LHT65N,As shown below:
1745
1746 [[image:image-20220615154519-3.png||height="672" width="807"]]
1747
1748
1749
1750 == 6.5 How to use TTL-USB to connect PC to upgrade firmware? ==
1751
1752
1753 [[image:image-20220615153355-1.png]]
1754
1755
1756 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1757
1758 [[image:image-20220615170542-5.png]]
1759
1760
1761
1762 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1763
1764 (% _msthash="506146" _msttexthash="52173160" %)
1765 First connect the four lines；(% style="display:none" %)
1766
1767 [[image:image-20220621170938-1.png||height="413" width="419"]](% _mstvisible="1" %)，(% style="display:none" %)
1768
1769
1770 (% _mstvisible="1" %)Then use DuPont cable to short circuit port3 and port1, and then release them, so that the device enters bootlaod mode.
1771
1772 [[image:image-20220621170938-2.png]]
1773
1774
1775
1776 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1777
1778 [[image:image-20220615171334-6.png]]
1779
1780
1781 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1782
1783
1784 When this interface appears, it indicates that the download has been completed.
1785
1786 [[image:image-20220620160723-8.png]]
1787
1788
1789 Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
1790
1791
1792
1793 == 6.6 Using USB-TYPE-C to connect to the computer using the AT command ==
1794
1795
1796 [[image:image-20220623110706-1.png]]
1797
1798
1799 [[image:image-20220623112117-4.png||height="459" width="343"]]
1800
1801
1802 (((
1803 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.
1804 )))
1805
1806
1807 Input password and ATZ to activate LHT65N,As shown below:
1808
1809 [[image:image-20220615154519-3.png||height="672" width="807"]]
1810
1811
1812
1813 == 6.7 How to use  USB-TYPE-C to connect PC to upgrade firmware? ==
1814
1815
1816 [[image:image-20220623110706-1.png]]
1817
1818
1819 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1820
1821 [[image:image-20220615170542-5.png]]
1822
1823
1824
1825 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1826
1827 (% _msthash="506146" _msttexthash="52173160" %)
1828 First connect the four lines；
1829
1830 (% _msthash="506146" _msttexthash="52173160" %)
1831 [[image:image-20220623113959-5.png||height="528" width="397"]]
1832
1833 (% _msthash="506146" _msttexthash="52173160" %)
1834 Press and hold the start key to restart and enter  (% _mstvisible="1" %)bootlaod(%%) mode.
1835
1836
1837
1838 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1839
1840 [[image:image-20220615171334-6.png]]
1841
1842
1843 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1844
1845
1846 When this interface appears, it indicates that the download has been completed.
1847
1848 [[image:image-20220620160723-8.png]]
1849
1850
1851 Finally,restart reset device again
1852
1853
1854
1855 = 7. Order Info =
1856
1857
1858 Part Number: (% _mstvisible="4" style="color:#4f81bd" %)** LHT65N-XX-YY**
1859
1860 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
1861
1862 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
1863 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
1864 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
1865 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
1866 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
1867 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**US915**(%%): LoRaWAN US915 band
1868 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
1869 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
1870
1871 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
1872
1873 * (% style="color:red" %)**E3**(%%): External Temperature Probe
1874
1875
1876
1877 = 8. Packing Info =
1878
1879
1880 **Package Includes**:
1881
1882 * LHT65N Temperature & Humidity Sensor x 1
1883 * Optional external sensor
1884
1885 **Dimension and weight**:
1886
1887 * Device Size:  10 x 10 x 3.5 cm
1888 * Device Weight: 120.5g
1889
1890
1891
1892 = 9. Reference material =
1893
1894
1895 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
1896
1897
1898
1899 = 10. FCC Warning =
1900
1901
1902 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
1903
1904 (1) This device may not cause harmful interference；
1905
1906 (2) this device must accept any interference received, including interference that may cause undesired operation.
1907
1908
1909

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