Version 211.1 by Bei Jinggeng on 2022/11/01 16:33
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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 == 1.3 Specification ==
66
67
68 (% style="color:#037691" %)**Built-in Temperature Sensor:**
69
70 * Resolution: 0.01 °C
71 * Accuracy Tolerance : Typ ±0.3 °C
72 * Long Term Drift: < 0.02 °C/yr
73 * Operating Range: -40 ~~ 85 °C
74
75 (% style="color:#037691" %)**Built-in Humidity Sensor:**
76
77 * Resolution: 0.04 %RH
78 * Accuracy Tolerance : Typ ±3 %RH
79 * Long Term Drift: < 0.02 °C/yr
80 * Operating Range: 0 ~~ 96 %RH
81
82 (% style="color:#037691" %)**External Temperature Sensor:**
83
84 * Resolution: 0.0625 °C
85 * ±0.5°C accuracy from -10°C to +85°C
86 * ±2°C accuracy from -55°C to +125°C
87 * Operating Range: -55 °C ~~ 125 °C
88
89
90 = 2. Connect LHT65N to IoT Server =
91
92
93 == 2.1 How does LHT65N work? ==
94
95
96 (((
97 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.
98 )))
99
100 (((
101 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.
102 )))
103
104
105
106 == 2.2 How to Activate LHT65N? ==
107
108
109 (((
110 The LHT65N has two working modes:
111 )))
112
113 * (((
114 (% 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.
115 )))
116 * (((
117 (% 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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119
120 (((
121 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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123
124
125 [[image:image-20220515123819-1.png||_mstalt="430742" _mstvisible="3" height="379" width="317"]]
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127 [[image:image-20220525110604-2.png||_mstalt="427531" _mstvisible="3"]]
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129
130
131 == 2.3 Example to join LoRaWAN network ==
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134 (% _msthash="315240" _msttexthash="9205482" _mstvisible="1" class="wikigeneratedid" %)
135 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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138 (% _mstvisible="1" class="wikigeneratedid" %)
139 [[image:image-20220522232442-1.png||_mstalt="427830" _mstvisible="3" height="387" width="648"]]
140
141
142 (((
143 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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145
146
147
148 === 2.3.1 Step 1: Create Device n TTN ===
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150
151 (((
152 Create a device in TTN V3 with the OTAA keys from LHT65N.
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154
155 (((
156 Each LHT65N is shipped with a sticker with its device EUI, APP Key and APP EUI as below:
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158
159 [[image:image-20220617150003-1.jpeg]]
160
161 User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:
162
163 Add APP EUI in the application.
164
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166 [[image:image-20220522232916-3.png||_mstalt="430495" _mstvisible="3"]]
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169 [[image:image-20220522232932-4.png||_mstalt="430157" _mstvisible="3"]]
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172 [[image:image-20220522232954-5.png||_mstalt="431847" _mstvisible="3"]]
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176 (% style="color:red" %)**Note: LHT65N use same payload as LHT65.**
177
178
179 [[image:image-20220522233026-6.png||_mstalt="429403" _mstvisible="3"]]
180
181
182 Input APP EUI,  APP KEY and DEV EUI:
183
184
185 [[image:image-20220522233118-7.png||_mstalt="430430" _mstvisible="3"]]
186
187
188
189
190 === 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
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192
193 (((
194 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.
195 )))
196
197 [[image:image-20220522233300-8.png||_mstalt="428389" _mstvisible="3" height="219" width="722"]]
198
199
200
201 == 2.4 Uplink Payload   ( Fport~=2) ==
202
203
204 (((
205 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.
206 )))
207
208 (((
209 After each uplink, the (% _mstvisible="3" style="color:blue" %)**BLUE LED**(%%) will blink once.
210 )))
211
212 (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:390px" %)
213 |=(% style="width: 60px;" %)(((
214 **Size(bytes)**
215 )))|=(% style="width: 30px;" %)(((
216 **2**
217 )))|=(% style="width: 100px;" %)(((
218 **2**
219 )))|=(% style="width: 100px;" %)(((
220 **2**
221 )))|=(% style="width: 50px;" %)(((
222 **1**
223 )))|=(% style="width: 50px;" %)(((
224 **4**
225 )))
226 |(% style="width:97px" %)(((
227 **Value**
228 )))|(% style="width:39px" %)(((
229 [[BAT>>||anchor="H2.4.2BAT-BatteryInfo"]]
230 )))|(% style="width:100px" %)(((
231 (((
232 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
233 )))
234 )))|(% style="width:77px" %)(((
235 (((
236 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
237 )))
238 )))|(% style="width:47px" %)(((
239 [[Ext>>||anchor="H2.4.5Ext23"]] #
240 )))|(% style="width:51px" %)(((
241 [[Ext value>>||anchor="H2.4.6Extvalue"]]
242 )))
243
244 * The First 6 bytes: has fix meanings for every LHT65N.
245 * The 7th byte (EXT #): defines the external sensor model.
246 * 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.)
247
248
249 === 2.4.1 Decoder in TTN V3 ===
250
251
252 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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254 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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256
257 [[image:image-20220522234118-10.png||_mstalt="451464" _mstvisible="3" height="353" width="729"]]
258
259
260
261 === 2.4.2 BAT-Battery Info ===
262
263
264 These two bytes of BAT include the battery state and the actually voltage
265
266 [[image:image-20220523152839-18.png||_mstalt="457613" _mstvisible="3"]]
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268
269 [[image:image-20220522235639-1.png||_mstalt="431392" _mstvisible="3" height="139" width="727"]]
270
271
272 Check the battery voltage for LHT65N.
273
274 * BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
275 * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
276
277
278 === 2.4.3 Built-in Temperature ===
279
280
281 [[image:image-20220522235639-2.png||_mstalt="431756" _mstvisible="3" height="138" width="722"]]
282
283 * Temperature:  0x0ABB/100=27.47℃
284
285 [[image:image-20220522235639-3.png||_mstalt="432120" _mstvisible="3"]]
286
287 * Temperature:  (0xF5C6-65536)/100=-26.18℃
288
289
290 === 2.4.4 Built-in Humidity ===
291
292
293 [[image:image-20220522235639-4.png||_mstalt="432484" _mstvisible="3" height="138" width="722"]]
294
295 * Humidity:    0x025C/10=60.4%
296
297
298 === 2.4.5 Ext # ===
299
300
301 Bytes for External Sensor:
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303 [[image:image-20220523152822-17.png||_mstalt="454545" _mstvisible="3"]]
304
305
306
307 === 2.4.6 Ext value ===
308
309
310 ==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
311
312
313 [[image:image-20220522235639-5.png||_mstalt="432848" _mstvisible="3"]]
314
315
316 * DS18B20 temp=0x0ADD/100=27.81℃
317
318 The last 2 bytes of data are meaningless
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320
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322 [[image:image-20220522235639-6.png||_mstalt="433212" _mstvisible="3"]]
323
324
325 * External temperature= (0xF54F-65536)/100=-27.37℃
326
327 The last 2 bytes of data are meaningless
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329 If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
330
331
332
333 ==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
334
335
336 (((
337 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:
338 )))
339
340 (((
341
342 )))
343
344 (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:480px" %)
345 |=(% style="width: 50px;" %)(((
346 **Size(bytes)**
347 )))|=(% style="width: 70px;" %)(((
348 **2**
349 )))|=(% style="width: 120px;" %)(((
350 **2**
351 )))|=(% style="width: 120px;" %)(((
352 **2**
353 )))|=(% style="width: 50px;" %)(((
354 **1**
355 )))|=(% style="width: 70px;" %)(((
356 **4**
357 )))
358 |(% style="width:110px" %)(((
359 **Value**
360 )))|(% style="width:71px" %)(((
361 [[External temperature>>||anchor="H4.2SetExternalSensorMode"]]
362 )))|(% style="width:99px" %)(((
363 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
364 )))|(% style="width:132px" %)(((
365 BAT Status & [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
366 )))|(% style="width:54px" %)(((
367 Status & Ext
368 )))|(% style="width:64px" %)(((
369 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp"]]
370 )))
371
372 * **Battery status & Built-in Humidity**
373
374 (% _mstvisible="1" border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:461px" %)
375 |=(% style="width: 67px;" %)Bit(bit)|=(% style="width: 256px;" %)[15:14]|=(% style="width: 132px;" %)[11:0]
376 |(% style="width:67px" %)Value|(% style="width:256px" %)(((
377 BAT Status
378 00(b): Ultra Low ( BAT <= 2.50v)
379 01(b): Low  (2.50v <=BAT <= 2.55v)
380 10(b): OK   (2.55v <= BAT <=2.65v)
381 11(b): Good   (BAT >= 2.65v)
382 )))|(% style="width:132px" %)(((
383 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
384 )))
385
386 * **Status & Ext Byte**
387
388 (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:500px" %)
389 |=(% 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]**
390 |=(% style="width: 96px;" %)**Status&Ext**|(% style="width:124px" %)None-ACK Flag|(% style="width:146px" %)Poll Message FLAG|(% style="width:109px" %)Sync time OK|(% style="width:143px" %)Unix Time Request|(% style="width:106px" %)Ext: 0b(1001)
391
392 * (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
393 * (% style="color:blue" %)**Sync time OK**: (%%) 1: Set time ok，0: N/A. After time SYNC request is sent, LHT65N will set this bit to 0 until got the time stamp from the application server.
394 * (% style="color:blue" %)**Unix Time Request**:(%%)  1: Request server downlink Unix time, 0 : N/A. In this mode, LHT65N will set this bit to 1 every 10 days to request a time SYNC. (AT+SYNCMOD to set this)
395
396
397 ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
398
399
400 In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
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402 be used to power the external ADC sensor; user can control the power on time for this
403
404 (% style="color:blue" %)**sensor by setting:**
405
406 **AT+EXT=6,timeout**  (% _msthash="506085" _msttexthash="8782189" _mstvisible="3" style="color:red" %)**Time to power this sensor, from 0 ~~ 65535ms**
407
408 **For example:**
409
410 AT+EXT=6,1000 will power this sensor for 1000ms before sampling the ADC value.
411
412
413 Or use **downlink command A2** to set the same.
414
415 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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417 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.
418
419 [[image:image-20220628150112-1.png||height="241" width="285"]]
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422 When ADC_IN1 pin is connected to GND or suspended, ADC value is 0
423
424 [[image:image-20220628150714-4.png]]
425
426
427 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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430 1) The minimum range is about 0.1V. Each chip has internal calibration, so this value is close to 0.1V
431
432 [[image:image-20220628151005-5.png]]
433
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435 2) The maximum range is about 1.1V. Each chip has internal calibration, so this value is close to 1.1v
436
437 [[image:image-20220628151056-6.png]]
438
439
440 3) Within range
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442 [[image:image-20220628151143-7.png]]
443
444
445
446 ==== 2.4.6.4 Ext~=2 TMP117 Sensor （Since Firmware v1.3） ====
447
448
449 [[image:image-20220927095645-1.png||height="534" width="460"]]
450
451
452 (% style="color:blue" %)**Ext=2,Temperature Sensor(TMP117)：**
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454 [[image:image-20220906102307-7.png]]
455
456
457 (% style="color:blue" %)**Interrupt Mode and Counting Mode:**
458
459 The external cable NE2 can be use for MOD4 and MOD8
460
461
462
463 ==== 2.4.6.5 Ext~=4 Interrupt Mode （Since Firmware v1.3） ====
464
465
466 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will send an uplink when there is a trigger.**
467
468
469 (% style="color:blue" %)**Interrupt Mode can be used to connect to external interrupt sensors such as:**
470
471 (% style="color:#037691" %)**Case 1: Door Sensor.** (%%)3.3v Out for such sensor is just to detect Open/Close.
472
473 In Open State, the power consumption is the same as if there is no probe
474
475 In Close state, the power consumption will be 3uA higher than normal.
476
477 [[image:image-20220906100852-1.png||height="205" width="377"]]
478
479
480 Ext=4,Interrupt Sensor：
481
482 (% border="1.5" cellpadding="4" cellspacing="4" style="background-color:#ffffcc; color:green; height:6px; width:478px" %)
483 |(% style="width:101px" %)(((
484 AT+EXT=4,1
485 )))|(% style="width:373px" %)(((
486 Sent uplink packet in both rising and falling interrupt
487 )))
488 |(% style="width:101px" %)(((
489 AT+EXT=4,2
490 )))|(% style="width:373px" %)(((
491 Sent uplink packet only in falling interrupt
492 )))
493 |(% style="width:101px" %)(((
494 AT+EXT=4,3
495 )))|(% style="width:373px" %)(((
496 Sent uplink packet only in rising interrupt
497 )))
498
499 Trigger by falling edge:
500
501 [[image:image-20220906101145-2.png]]
502
503
504 Trigger by raising edge：
505
506 [[image:image-20220906101145-3.png]]
507
508
509
510
511 ==== 2.4.6.6 Ext~=8 Counting Mode（Since Firmware v1.3） ====
512
513
514 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will count for every interrupt and uplink periodically.**
515
516
517 (% 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.
518
519 [[image:image-20220906101320-4.png||height="366" width="698"]]
520
521
522 (% 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
523
524 [[image:image-20220906101320-5.png||height="353" width="696"]]
525
526
527 Ext=8, Counting Sensor ( 4 bytes)：
528
529 (% border="2" cellpadding="4" cellspacing="4" style="background-color:#ffffcc; color:green; height:6px; width:381px" %)
530 |(% style="width:138px" %)(((
531 AT+EXT=8,0
532 )))|(% style="width:240px" %)(((
533 Count at falling interrupt
534 )))
535 |(% style="width:138px" %)(((
536 AT+EXT=8,1
537 )))|(% style="width:240px" %)(((
538 Count at rising interrupt
539 )))
540 |(% style="width:138px" %)(((
541 AT+SETCNT=60
542 )))|(% style="width:240px" %)(((
543 Sent current count to 60
544 )))
545
546 [[image:image-20220906101320-6.png]]
547
548
549 (% style="color:blue" %)**A2 downlink Command：**
550
551 A2 02:  Same as AT+EXT=2 (AT+EXT= second byte)
552
553 A2 06 01 F4:  Same as AT+EXT=6,500 (AT+EXT= second byte, third and fourth bytes)
554
555 A2 04 02:  Same as AT+EXT=4,2 (AT+EXT= second byte, third byte)
556
557 A2 08 01 00:  Same as AT+EXT=8,0 (AT+EXT= second byte, fourth byte)
558
559 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)
560
561
562
563 == 2.5 Show data on Datacake ==
564
565
566 (((
567 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:
568 )))
569
570 (((
571
572 )))
573
574 (((
575 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the LoRaWAN network.
576 )))
577
578 (((
579 (% 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.
580 )))
581
582 (((
583
584 )))
585
586 (((
587 Add Datacake:
588 )))
589
590
591 [[image:image-20220523000825-7.png||_mstalt="429884" _mstvisible="3" height="262" width="583"]]
592
593
594
595 Select default key as Access Key:
596
597
598 [[image:image-20220523000825-8.png||_mstalt="430248" _mstvisible="3" height="453" width="406"]]
599
600
601 In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/||_mstvisible="2"]]) , add LHT65 device.
602
603
604 [[image:image-20220523000825-9.png||_mstalt="430612" _mstvisible="3" height="366" width="392"]]
605
606
607 [[image:image-20220523000825-10.png||_mstalt="450619" _mstvisible="3" height="413" width="728"]]
608
609
610
611 == 2.6 Datalog Feature ==
612
613
614 (((
615 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.
616 )))
617
618
619
620 === 2.6.1 Ways to get datalog via LoRaWAN ===
621
622
623 There are two methods:
624
625 (% style="color:blue" %)**Method 1:** (%%)IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specified time range.
626
627
628 (% 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.
629
630 (% style="color:red" %)**Note for method 2:**
631
632 * a) LHT65N will do an ACK check for data records sending to make sure every data arrive server.
633 * 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.
634
635 Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
636
637
638 [[image:image-20220703111700-2.png||height="381" width="1119"]]
639
640
641
642 === 2.6.2 Unix TimeStamp ===
643
644
645 LHT65N uses Unix TimeStamp format based on
646
647
648 [[image:image-20220523001219-11.png||_mstalt="450450" _mstvisible="3" height="97" width="627"]]
649
650
651
652 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/||_mstvisible="3"]] :
653
654 Below is the converter example
655
656 [[image:image-20220523001219-12.png||_mstalt="450827" _mstvisible="3" height="298" width="720"]]
657
658 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
659
660
661
662 === 2.6.3 Set Device Time ===
663
664
665 (((
666 (% style="color:blue" %)**There are two ways to set device's time:**
667 )))
668
669 (((
670 **1.  Through LoRaWAN MAC Command (Default settings)**
671 )))
672
673 (((
674 User need to set SYNCMOD=1 to enable sync time via MAC command.
675 )))
676
677 (((
678 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).
679 )))
680
681 (((
682 (% 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.**
683 )))
684
685 (((
686
687 )))
688
689 (((
690 **2. Manually Set Time**
691 )))
692
693 (((
694 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
695 )))
696
697
698
699 === 2.6.4 Poll sensor value ===
700
701
702 User can poll sensor value based on timestamps from the server. Below is the downlink command.
703
704 [[image:image-20220523152302-15.png||_mstalt="451581" _mstvisible="3"]]
705
706
707 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.
708
709 For example, downlink command **31 5FC5F350 5FC6 0160 05**
710
711 Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00’s data
712
713 Uplink Internal =5s，means LHT65N will send one packet every 5s. range 5~~255s.
714
715
716
717 === 2.6.5 Datalog Uplink payload ===
718
719
720 The Datalog poll reply uplink will use below payload format.
721
722 **Retrieval data payload:**
723
724 (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:480px" %)
725 |=(% style="width: 60px;" %)(((
726 **Size(bytes)**
727 )))|=(% style="width: 90px;" %)**2**|=(% style="width: 90px;" %)**2**|=(% style="width: 70px;" %)**2**|=(% style="width: 100px;" %)**1**|=(% style="width: 70px;" %)**4**
728 |(% 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"]]
729
730 **Poll message flag & Ext:**
731
732 [[image:image-20221006192726-1.png||height="112" width="754"]]
733
734 (% 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)
735
736 (% style="color:blue" %)**Poll Message Flag**(%%): 1: This message is a poll message reply.
737
738 * Poll Message Flag is set to 1.
739
740 * Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
741
742 For example, in US915 band, the max payload for different DR is:
743
744 (% style="color:blue" %)**a) DR0:** (%%)max is 11 bytes so one entry of data
745
746 (% style="color:blue" %)**b) DR1:**(%%) max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
747
748 (% style="color:blue" %)**c) DR2:**(%%) total payload includes 11 entries of data
749
750 (% style="color:blue" %)**d) DR3: **(%%)total payload includes 22 entries of data.
751
752 If devise doesn't have any data in the polling time. Device will uplink 11 bytes of 0   
753
754
755 **Example:**
756
757 If LHT65N has below data inside Flash:
758
759 [[image:image-20220523144455-1.png||_mstalt="430040" _mstvisible="3" height="335" width="735"]]
760
761
762 If user sends below downlink command: (% style="background-color:yellow" %)3160065F9760066DA705
763
764 Where : Start time: 60065F97 = time 21/1/19 04:27:03
765
766 Stop time: 60066DA7= time 21/1/19 05:27:03
767
768
769 **LHT65N will uplink this payload.**
770
771 [[image:image-20220523001219-13.png||_mstalt="451204" _mstvisible="3" height="421" style="text-align:left" width="727"]]
772
773
774 __**7FFF089801464160065F97**__ **__7FFF__ __088E__ __014B__ __41__ __60066009__** 7FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
775
776 Where the first 11 bytes is for the first entry:
777
778 7FFF089801464160065F97
779
780 Ext sensor data=0x7FFF/100=327.67
781
782 Temp=0x088E/100=22.00
783
784 Hum=0x014B/10=32.6
785
786 poll message flag & Ext=0x41,means reply data,Ext=1
787
788 Unix time is 0x60066009=1611030423s=21/1/19 04:27:03
789
790
791
792 == 2.7 Alarm Mode ==
793
794
795 (((
796 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.
797 )))
798
799 (((
800 (% style="color:red" %)**Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.**
801
802
803
804 === 2.7.1 ALARM MODE ( Since v1.3.1 firmware) ===
805
806
807 (((
808 (% class="box infomessage" %)
809 (((
810 **AT+WMOD=3,**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)
811
812 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
813
814 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
815
816 **AT+ARTEMP=？ **:  Gets the alarm range of the internal temperature sensor(% _mstvisible="3" style="display:none" %)
817
818 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
819
820 **AT+LEDALARM=1** :       Enable LED visual Alarm.
821 )))
822 )))
823
824
825
826 )))
827
828 (((
829 === 2.7.2 ALARM MODE ( Before v1.3.1 firmware) ===
830
831
832 )))
833
834 (% _mstvisible="1" class="box infomessage" %)
835 (((
836 (((
837 **AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)
838 )))
839
840 (((
841 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
842 )))
843
844 (((
845 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
846 )))
847
848 (((
849 **AT+ARTEMP=？ **:  Gets the alarm range of the internal temperature sensor(% _mstvisible="3" style="display:none" %)
850 )))
851
852 (((
853 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
854 )))
855 )))
856
857 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
858
859 Total bytes: 8 bytes
860
861 **Example:**AA0100010001003C
862
863 WMOD=01
864
865 CITEMP=0001
866
867 TEMPlow=0001
868
869 TEMPhigh=003C
870
871
872
873 == 2.8 LED Indicator ==
874
875
876 The LHT65 has a triple color LED which for easy showing different stage .
877
878 While user press ACT button, the LED will work as per LED status with ACT button.
879
880 In a normal working state:
881
882 * For each uplink, the BLUE LED or RED LED will blink once.
883 BLUE LED when external sensor is connected.
884 * RED LED when external sensor is not connected
885 * For each success downlink, the PURPLE LED will blink once
886
887
888 == 2.9 installation ==
889
890
891 (% _mstvisible="1" %)
892 [[image:image-20220516231650-1.png||_mstalt="428597" _mstvisible="3" height="436" width="428"]]
893
894
895
896 = 3. Sensors and Accessories =
897
898
899 == 3.1 E2 Extension Cable ==
900
901
902 [[image:image-20220619092222-1.png||height="182" width="188"]][[image:image-20220619092313-2.png||height="182" width="173"]]
903
904
905 **1m long breakout cable for LHT65N. Features:**
906
907 * (((
908 Use for AT Command， works for both LHT52/LHT65N
909 )))
910 * (((
911 Update firmware for LHT65N, works for both LHT52/LHT65N
912 )))
913 * (((
914 Supports ADC mode to monitor external ADC
915 )))
916 * (((
917 Supports Interrupt mode
918 )))
919 * (((
920 Exposed All pins from the LHT65N Type-C connector.
921
922
923
924 )))
925
926 [[image:image-20220619092421-3.png||height="371" width="529"]]
927
928
929
930
931 == 3.2 E3 Temperature Probe ==
932
933
934 [[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"]]
935
936
937 Temperature sensor with 2 meters cable long
938
939 * Resolution: 0.0625 °C
940 * ±0.5°C accuracy from -10°C to +85°C
941 * ±2°C accuracy from -55°C to +125°C
942 * Operating Range: -40 ~~ 125 °C
943 * Working voltage 2.35v ~~ 5v
944
945
946 = 4. Configure LHT65N via AT command or LoRaWAN downlink =
947
948
949 (((
950 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
951 )))
952
953 * (((
954 AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
955 )))
956
957 * (((
958 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
959 )))
960
961 (((
962 There are two kinds of commands to configure LHT65N, they are:
963 )))
964
965 * (((
966 (% style="color:#4f81bd" %)**General Commands**.
967 )))
968
969 (((
970 These commands are to configure:
971 )))
972
973 1. (((
974 General system settings like: uplink interval.
975 )))
976 1. (((
977 LoRaWAN protocol & radio-related commands.
978 )))
979
980 (((
981 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]]
982 )))
983
984 * (((
985 (% style="color:#4f81bd" %)**Commands special design for LHT65N**
986 )))
987
988 (((
989 These commands are only valid for LHT65N, as below:
990 )))
991
992
993
994 == 4.1 Set Transmit Interval Time ==
995
996
997 Feature: Change LoRaWAN End Node Transmit Interval.
998
999
1000 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
1001
1002 [[image:image-20220523150701-2.png||_mstalt="427453" _mstvisible="3"]]
1003
1004
1005 (% style="color:#4f81bd" %)**Downlink Command: 0x01**
1006
1007 Format: Command Code (0x01) followed by 3 bytes time value.
1008
1009 If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.
1010
1011 * **Example 1**: Downlink Payload: 0100001E  ~/~/ Set Transmit Interval (TDC) = 30 seconds
1012
1013 * **Example 2**: Downlink Payload: 0100003C  ~/~/ Set Transmit Interval (TDC) = 60 seconds
1014
1015
1016 == 4.2 Set External Sensor Mode ==
1017
1018
1019 Feature: Change External Sensor Mode.
1020
1021
1022 (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1023
1024 [[image:image-20220523150759-3.png||_mstalt="432146" _mstvisible="3"]]
1025
1026
1027 (% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1028
1029 Total bytes: 2 ~~ 5 bytes
1030
1031 **Example:**
1032
1033 * 0xA201: Set external sensor type to E1
1034
1035 * 0xA209: Same as AT+EXT=9
1036
1037 * 0xA20702003c: Same as AT+SETCNT=60
1038
1039
1040 == 4.3 Enable/Disable uplink Temperature probe ID ==
1041
1042
1043 (((
1044 Feature: If PID is enabled, device will send the temperature probe ID on:
1045 )))
1046
1047 * (((
1048 First Packet after OTAA Join
1049 )))
1050 * (((
1051 Every 24 hours since the first packet.
1052 )))
1053
1054 (((
1055 PID is default set to disable (0)
1056
1057
1058 )))
1059
1060 (% style="color:#4f81bd" %)**AT Command:**
1061
1062 [[image:image-20220523150928-4.png||_mstalt="431821" _mstvisible="3"]]
1063
1064
1065 (% style="color:#4f81bd" %)**Downlink Command:**
1066
1067 * **0xA800**  **~-~->** AT+PID=0
1068 * **0xA801**     **~-~->** AT+PID=1
1069
1070
1071 == 4.4 Set Password ==
1072
1073
1074 Feature: Set device password, max 9 digits
1075
1076
1077 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1078
1079 [[image:image-20220523151052-5.png||_mstalt="428623" _mstvisible="3"]]
1080
1081
1082 (% style="color:#4f81bd" %)**Downlink Command:**
1083
1084 No downlink command for this feature.
1085
1086
1087
1088 == 4.5 Quit AT Command ==
1089
1090
1091 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1092
1093
1094 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1095
1096 [[image:image-20220523151132-6.png||_mstalt="428649" _mstvisible="3"]]
1097
1098
1099 (% style="color:#4f81bd" %)**Downlink Command:**
1100
1101 No downlink command for this feature.
1102
1103
1104
1105 == 4.6 Set to sleep mode ==
1106
1107
1108 Feature: Set device to sleep mode
1109
1110 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1111 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1112
1113 (% _msthash="315251" _msttexthash="289783" style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1114
1115 [[image:image-20220523151218-7.png||_mstalt="430703" _mstvisible="3"]]
1116
1117
1118 (% _msthash="315252" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1119
1120 * There is no downlink command to set to Sleep mode.
1121
1122
1123 == 4.7 Set system time ==
1124
1125
1126 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1127
1128
1129 (% _msthash="315253" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1130
1131 [[image:image-20220523151253-8.png||_mstalt="430677" _mstvisible="3"]]
1132
1133
1134 (% _msthash="315254" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1135
1136 0x306007806000  ~/~/  Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1137
1138
1139
1140 == 4.8 Set Time Sync Mode ==
1141
1142
1143 (((
1144 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1145 )))
1146
1147 (((
1148 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.
1149
1150
1151 )))
1152
1153 (% _msthash="506058" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1154
1155 [[image:image-20220523151336-9.png||_mstalt="431717" _mstvisible="3"]]
1156
1157
1158 (% style="color:#4f81bd" %)**Downlink Command:**
1159
1160 0x28 01  ~/~/  Same As AT+SYNCMOD=1
1161 0x28 00  ~/~/  Same As AT+SYNCMOD=0
1162
1163
1164
1165 == 4.9 Set Time Sync Interval ==
1166
1167
1168 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1169
1170
1171 (% _msthash="315256" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1172
1173 [[image:image-20220523151411-10.png||_mstalt="449696" _mstvisible="3"]]
1174
1175
1176 (% _msthash="315257" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1177
1178 **0x29 0A**  ~/~/ Same as AT+SYNCTDC=0x0A
1179
1180
1181
1182 == 4.10 Print data entries base on page. ==
1183
1184
1185 Feature: Print the sector data from start page to stop page (max is 416 pages).
1186
1187
1188 (% _msthash="315258" _msttexthash="264953" style="color:#4f81bd" %)**AT Command: AT+PDTA**
1189
1190 [[image:image-20220523151450-11.png||_mstalt="451035" _mstvisible="3"]]
1191
1192
1193 (% _msthash="315259" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1194
1195 No downlink commands for feature
1196
1197
1198
1199 == 4.11 Print last few data entries. ==
1200
1201
1202 Feature: Print the last few data entries
1203
1204
1205 (% _msthash="315260" _msttexthash="288522" style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1206
1207 [[image:image-20220523151524-12.png||_mstalt="452101" _mstvisible="3"]]
1208
1209
1210 (% _msthash="315261" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1211
1212 No downlink commands for feature
1213
1214
1215
1216 == 4.12 Clear Flash Record ==
1217
1218
1219 Feature: Clear flash storage for data log feature.
1220
1221
1222 (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1223
1224 [[image:image-20220523151556-13.png||_mstalt="454129" _mstvisible="3"]]
1225
1226
1227 (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1228
1229 * Example: 0xA301  ~/~/  Same as AT+CLRDTA
1230
1231
1232 == 4.13 Auto Send None-ACK messages ==
1233
1234
1235 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.
1236
1237
1238 (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1239
1240 The default factory setting is 0
1241
1242 (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:367px" %)
1243 |=(% style="width: 158px;" %)**Command Example**|=(% style="width: 118px;" %)**Function**|=(% style="width: 87px;" %)**Response**
1244 |(% style="width:158px" %)AT+PNACKMD=1|(% style="width:118px" %)Poll None-ACK message|(% style="width:87px" %)OK
1245
1246 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1247
1248 * Example: 0x3401  ~/~/  Same as AT+PNACKMD=1
1249
1250
1251 == 4.14 Modified ATWOOD command for external sensor TMP117 or DS18B20 temperature alarm ==
1252
1253
1254 Feature: Set internal and external temperature sensor alarms.
1255
1256 (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:500px" %)
1257 |=(% style="width: 250px;" %)**Command Example**|=(% style="width: 200px;" %)**Function**|=(% style="width: 50px;" %)**Response**
1258 |(% style="width:268px" %)AT+WMOD=parameter1,parameter2,parameter3,parameter4|(% style="width:255px" %)Set internal and external temperature sensor alarms|(% style="width:181px" %)OK
1259
1260 (% style="color:#037691" %)**AT+WMOD=parameter1,parameter2,parameter3,parameter4**
1261
1262 (% style="color:#037691" %)**Parameter 1**(%%):  Alarm mode:
1263
1264 0): Cancel
1265
1266 1): Threshold alarm
1267
1268 2): Fluctuation alarm
1269
1270
1271 (% style="color:#037691" %)** Parameter 2**(%%):  Sampling time. Unit: seconds, up to 255 seconds.
1272
1273 (% 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.**
1274
1275
1276 (% style="color:#037691" %) **Parameter 3 and parameter 4:**
1277
1278 1):  If Alarm Mode is set to 1: Parameter 3 and parameter 4 are valid, as before, they represent low temperature and high temperature.
1279
1280 Such as AT+WMOD=1,60,45,105, it means high and low temperature alarm.
1281
1282
1283 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.
1284
1285 Such as AT+WMOD=2,10,2,it means that it is a fluctuation alarm.
1286
1287 If the difference between the current collected temperature and the last Uplin is ±2 degrees, the alarm will be issued.
1288
1289
1290 (% style="color:#4f81bd" %)**Downlink Command: 0xA5**
1291
1292 0xA5 00 ~-~- AT+WMOD=0.
1293
1294 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 )
1295
1296 0xA5 02 0A 02 ~-~- AT+WMOD=2,10,2  (AT+WMOD = second byte, third byte, fourth byte)
1297
1298 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.
1299
1300
1301
1302 = 5. Battery & How to replace =
1303
1304
1305 == 5.1 Battery Type ==
1306
1307
1308 (((
1309 (((
1310 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.
1311 )))
1312 )))
1313
1314 (((
1315
1316 )))
1317
1318 (((
1319 (((
1320 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1321 [[image:image-20220515075034-1.png||_mstalt="428961" _mstvisible="4" height="208" width="644"]]
1322 )))
1323 )))
1324
1325 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1326
1327
1328
1329 == 5.2 Replace Battery ==
1330
1331
1332 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.
1333
1334 [[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"]]
1335
1336
1337
1338 == 5.3 Battery Life Analyze ==
1339
1340
1341 (((
1342 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:
1343 [[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]]
1344 )))
1345
1346 (((
1347
1348 )))
1349
1350 (((
1351 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]]
1352 )))
1353
1354
1355
1356 = 6. FAQ =
1357
1358
1359 == 6.1 How to use AT Command? ==
1360
1361
1362 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.
1363
1364 [[image:image-20220530085651-1.png||_mstalt="429949"]]
1365
1366
1367 (% _msthash="506061" _msttexthash="170755" %)**Connection:**
1368
1369 * (% style="background-color:yellow" %)**USB to TTL GND <~-~->GND**
1370 * (% style="background-color:yellow" %)**USB to TTL RXD <~-~-> D+**
1371 * (% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1372
1373 (((
1374 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.
1375 )))
1376
1377
1378 Input password and ATZ to activate LHT65N,As shown below:
1379
1380 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1381
1382
1383 (% _msthash="506066" _msttexthash="544869" %)
1384 AT Command List is as below:
1385
1386 (% _msthash="506067" _msttexthash="361920" %)
1387 AT+<CMD>? :  Help on <CMD>
1388
1389 (% _msthash="506068" _msttexthash="243061" %)
1390 AT+<CMD> :  Run <CMD>
1391
1392 (% _msthash="506069" _msttexthash="704197" %)
1393 AT+<CMD>=<value> :  Set the value
1394
1395 (% _msthash="506070" _msttexthash="455676" %)
1396 AT+<CMD>=? :  Get the value
1397
1398 (% _msthash="506071" _msttexthash="670553" %)
1399 AT+DEBUG:  Set more info output
1400
1401 (% _msthash="506072" _msttexthash="485888" %)
1402 ATZ:  Trig a reset of the MCU
1403
1404 (% _msthash="506073" _msttexthash="2068872" %)
1405 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1406
1407 (% _msthash="506074" _msttexthash="689169" %)
1408 AT+DEUI:  Get or Set the Device EUI
1409
1410 (% _msthash="506075" _msttexthash="960414" %)
1411 AT+DADDR:  Get or Set the Device Address
1412
1413 (% _msthash="506076" _msttexthash="1079897" %)
1414 AT+APPKEY:  Get or Set the Application Key
1415
1416 (% _msthash="506077" _msttexthash="1326143" %)
1417 AT+NWKSKEY:  Get or Set the Network Session Key
1418
1419 (% _msthash="506078" _msttexthash="1573000" %)
1420 AT+APPSKEY:  Get or Set the Application Session Key
1421
1422 (% _msthash="506079" _msttexthash="1041729" %)
1423 AT+APPEUI:  Get or Set the Application EUI
1424
1425 (% _msthash="506080" _msttexthash="2104206" %)
1426 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1427
1428 (% _msthash="506081" _msttexthash="3369288" %)
1429 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1430
1431 (% _msthash="506082" _msttexthash="1894529" %)
1432 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1433
1434 (% _msthash="506083" _msttexthash="3864172" %)
1435 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1436
1437 (% _msthash="506084" _msttexthash="1712204" %)
1438 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1439
1440 (% _msthash="506085" _msttexthash="1281202" %)
1441 AT+RX2FQ:  Get or Set the Rx2 window frequency
1442
1443 (% _msthash="506086" _msttexthash="2796781" %)
1444 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1445
1446 (% _msthash="506087" _msttexthash="3285165" %)
1447 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1448
1449 (% _msthash="506088" _msttexthash="3286179" %)
1450 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1451
1452 (% _msthash="506089" _msttexthash="4703803" %)
1453 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1454
1455 (% _msthash="506090" _msttexthash="4704999" %)
1456 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1457
1458 (% _msthash="506091" _msttexthash="1528683" %)
1459 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1460
1461 (% _msthash="506092" _msttexthash="757185" %)
1462 AT+NWKID:  Get or Set the Network ID
1463
1464 (% _msthash="506093" _msttexthash="1156597" %)
1465 AT+FCU:  Get or Set the Frame Counter Uplink
1466
1467 (% _msthash="506094" _msttexthash="1273987" %)
1468 AT+FCD:  Get or Set the Frame Counter Downlink
1469
1470 (% _msthash="506095" _msttexthash="859222" %)
1471 AT+CLASS:  Get or Set the Device Class
1472
1473 (% _msthash="506096" _msttexthash="384852" %)
1474 AT+JOIN:  Join network
1475
1476 (% _msthash="506097" _msttexthash="548626" %)
1477 AT+NJS:  Get the join status
1478
1479 (% _msthash="506098" _msttexthash="2546206" %)
1480 AT+SENDB:  Send hexadecimal data along with the application port
1481
1482 (% _msthash="506099" _msttexthash="1932307" %)
1483 AT+SEND:  Send text data along with the application port
1484
1485 (% _msthash="506100" _msttexthash="3560557" %)
1486 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
1487
1488 (% _msthash="506101" _msttexthash="1429701" %)
1489 AT+RECV:  Print last received data in raw format
1490
1491 (% _msthash="506102" _msttexthash="1735981" %)
1492 AT+VER:  Get current image version and Frequency Band
1493
1494 (% _msthash="506103" _msttexthash="1189474" %)
1495 AT+CFM:  Get or Set the confirmation mode (0-1)
1496
1497 (% _msthash="506104" _msttexthash="1718210" %)
1498 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1499
1500 (% _msthash="506105" _msttexthash="1339403" %)
1501 AT+SNR:  Get the SNR of the last received packet
1502
1503 (% _msthash="506106" _msttexthash="1452009" %)
1504 AT+RSSI:  Get the RSSI of the last received packet
1505
1506 (% _msthash="506107" _msttexthash="2768142" %)
1507 AT+TDC:  Get or set the application data transmission interval in ms
1508
1509 (% _msthash="506108" _msttexthash="1083914" %)
1510 AT+PORT:  Get or set the application port
1511
1512 (% _msthash="506109" _msttexthash="622440" %)
1513 AT+DISAT:  Disable AT commands
1514
1515 (% _msthash="506110" _msttexthash="868361" %)
1516 AT+PWORD: Set password, max 9 digits
1517
1518 (% _msthash="506111" _msttexthash="2210299" %)
1519 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
1520
1521 (% _msthash="506112" _msttexthash="2113462" %)
1522 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
1523
1524 (% _msthash="506113" _msttexthash="2087423" %)
1525 AT+PDTA:  Print the sector data from start page to stop page
1526
1527 (% _msthash="506114" _msttexthash="1063127" %)
1528 AT+PLDTA:  Print the last few sets of data
1529
1530 (% _msthash="506115" _msttexthash="1999426" %)
1531 AT+CLRDTA:  Clear the storage, record position back to 1st
1532
1533 (% _msthash="506116" _msttexthash="442130" %)
1534 AT+SLEEP:  Set sleep mode
1535
1536 (% _msthash="506117" _msttexthash="1080222" %)
1537 AT+EXT:  Get or Set external sensor model
1538
1539 (% _msthash="506118" _msttexthash="1309490" %)
1540 AT+BAT:  Get the current battery voltage in mV
1541
1542 (% _msthash="506119" _msttexthash="813891" %)
1543 AT+CFG:  Print all configurations
1544
1545 (% _msthash="506120" _msttexthash="551707" %)
1546 AT+WMOD:  Get or Set Work Mode
1547
1548 (% _msthash="506121" _msttexthash="2631499" %)
1549 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
1550
1551 (% _msthash="506122" _msttexthash="3907150" %)
1552 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
1553
1554 (% _msthash="506123" _msttexthash="854620" %)
1555 AT+SETCNT:  Set the count at present
1556
1557 (% _msthash="506124" _msttexthash="2554877" %)
1558 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
1559
1560 (% _msthash="506125" _msttexthash="771849" %)
1561 AT+RPL:  Get or set response level
1562
1563 (% _msthash="506126" _msttexthash="1484314" %)
1564 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
1565
1566 (% _msthash="506127" _msttexthash="741728" %)
1567 AT+LEAPSEC:  Get or Set Leap Second
1568
1569 (% _msthash="506128" _msttexthash="1694017" %)
1570 AT+SYNCMOD:  Get or Set time synchronization method
1571
1572 (% _msthash="506129" _msttexthash="2235948" %)
1573 AT+SYNCTDC:  Get or set time synchronization interval in day
1574
1575 (% _msthash="506130" _msttexthash="425542" %)
1576 AT+PID:  Get or set the PID
1577
1578
1579
1580 == 6.2 Where to use AT commands and Downlink commands ==
1581
1582
1583 **AT commands：**
1584
1585 [[image:image-20220620153708-1.png||height="603" width="723"]]
1586
1587
1588 **Downlink commands:**
1589
1590
1591
1592 (% style="color:blue" %)**TTN:**
1593
1594 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
1595
1596
1597
1598 (% style="color:blue" %)**Helium：**
1599
1600 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
1601
1602
1603
1604 (% style="color:blue" %)**Chirpstack: The downlink window will not be displayed until the network is accessed**
1605
1606
1607 [[image:image-20220615094850-6.png||_mstalt="433082"]]
1608
1609
1610 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
1611
1612
1613
1614 (% style="color:blue" %)**Aws:**
1615
1616 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1617
1618
1619
1620 == 6.3 How to change the uplink interval？ ==
1621
1622
1623 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);"]]
1624
1625
1626
1627 == 6.4 How to use TTL-USB to connect a PC to input AT commands? ==
1628
1629
1630 [[image:image-20220615153355-1.png]]
1631
1632 [[image:1655802313617-381.png]]
1633
1634
1635 (((
1636 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.
1637 )))
1638
1639
1640 Input password and ATZ to activate LHT65N,As shown below:
1641
1642 [[image:image-20220615154519-3.png||height="672" width="807"]]
1643
1644
1645
1646 == 6.5 How to use TTL-USB to connect PC to upgrade firmware? ==
1647
1648
1649 [[image:image-20220615153355-1.png]]
1650
1651
1652 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1653
1654 [[image:image-20220615170542-5.png]]
1655
1656
1657
1658 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1659
1660 (% _msthash="506146" _msttexthash="52173160" %)
1661 First connect the four lines；(% style="display:none" %)
1662
1663 [[image:image-20220621170938-1.png||height="413" width="419"]](% _mstvisible="1" %)，(% style="display:none" %)
1664
1665
1666 (% _mstvisible="1" %)Then use DuPont cable to short circuit port3 and port1, and then release them, so that the device enters bootlaod mode.
1667
1668 [[image:image-20220621170938-2.png]]
1669
1670
1671
1672 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1673
1674 [[image:image-20220615171334-6.png]]
1675
1676
1677 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1678
1679
1680 When this interface appears, it indicates that the download has been completed.
1681
1682 [[image:image-20220620160723-8.png]]
1683
1684
1685 Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
1686
1687
1688
1689 == 6.6 Using USB-TYPE-C to connect to the computer using the AT command ==
1690
1691
1692 [[image:image-20220623110706-1.png]]
1693
1694
1695 [[image:image-20220623112117-4.png||height="459" width="343"]]
1696
1697
1698 (((
1699 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.
1700 )))
1701
1702
1703 Input password and ATZ to activate LHT65N,As shown below:
1704
1705 [[image:image-20220615154519-3.png||height="672" width="807"]]
1706
1707
1708
1709 == 6.7 How to use  USB-TYPE-C to connect PC to upgrade firmware? ==
1710
1711
1712 [[image:image-20220623110706-1.png]]
1713
1714
1715 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1716
1717 [[image:image-20220615170542-5.png]]
1718
1719
1720
1721 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1722
1723 (% _msthash="506146" _msttexthash="52173160" %)
1724 First connect the four lines；
1725
1726 (% _msthash="506146" _msttexthash="52173160" %)
1727 [[image:image-20220623113959-5.png||height="528" width="397"]]
1728
1729 (% _msthash="506146" _msttexthash="52173160" %)
1730 Press and hold the start key to restart and enter  (% _mstvisible="1" %)bootlaod(%%) mode.
1731
1732
1733
1734 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1735
1736 [[image:image-20220615171334-6.png]]
1737
1738
1739 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1740
1741
1742 When this interface appears, it indicates that the download has been completed.
1743
1744 [[image:image-20220620160723-8.png]]
1745
1746
1747 Finally,restart reset device again
1748
1749
1750
1751 = 7. Order Info =
1752
1753
1754 Part Number: (% _mstvisible="4" style="color:#4f81bd" %)** LHT65N-XX-YY**
1755
1756 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
1757
1758 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
1759 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
1760 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
1761 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
1762 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
1763 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**US915**(%%): LoRaWAN US915 band
1764 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
1765 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
1766
1767 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
1768
1769 * (% style="color:red" %)**E3**(%%): External Temperature Probe
1770
1771
1772 = 8. Packing Info =
1773
1774
1775 **Package Includes**:
1776
1777 * LHT65N Temperature & Humidity Sensor x 1
1778 * Optional external sensor
1779
1780 **Dimension and weight**:
1781
1782 * Device Size:  10 x 10 x 3.5 cm
1783 * Device Weight: 120.5g
1784
1785
1786 = 9. Reference material =
1787
1788
1789 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
1790
1791
1792 = 10. FCC Warning =
1793
1794
1795 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
1796
1797 (1) This device may not cause harmful interference；
1798
1799 (2) this device must accept any interference received, including interference that may cause undesired operation.
1800
1801
1802

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