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Version 77.3 by Xiaoling on 2022/05/23 16:02
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1 (% style="text-align:center" %)
2 [[image:image-20220523115324-1.jpeg||height="500" width="500"]]
3
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5 **LHT65N LoRaWAN Temperature & Humidity Sensor Manual**
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12
13
14 **Table of Contents：**
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16 {{toc/}}
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21
22 = 1.Introduction =
23
24 == 1.1 What is LHT65N Temperature & Humidity Sensor ==
25
26 (((
27 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**(%%)**.**
28 )))
29
30 (((
31 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.
32 )))
33
34 (((
35 LHT65N has a built-in 2400mAh non-chargeable battery which can be used for up to 10 years*.
36 )))
37
38 (((
39 LHT65N is full compatible with LoRaWAN v1.0.3 Class A protocol, it can work with a standard LoRaWAN gateway.
40 )))
41
42 (((
43 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.
44 )))
45
46 (((
47 *The actual battery life depends on how often to send data, please see the battery analyzer chapter.
48 )))
49
50 == 1.2 Features ==
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
63
64 == 1.3 Specification ==
65
66 (((
67 **Built-in Temperature Sensor:**
68 )))
69
70 * (((
71 Resolution: 0.01 °C
72 )))
73 * (((
74 Accuracy Tolerance : Typ ±0.3 °C
75 )))
76 * (((
77 Long Term Drift: < 0.02 °C/yr
78 )))
79 * (((
80 Operating Range: -40 ~~ 85 °C
81 )))
82
83 (((
84 **Built-in Humidity Sensor:**
85 )))
86
87 * (((
88 Resolution: 0.04 %RH
89 )))
90 * (((
91 Accuracy Tolerance : Typ ±3 %RH
92 )))
93 * (((
94 Long Term Drift: < 0.02 °C/yr
95 )))
96 * (((
97 Operating Range: 0 ~~ 96 %RH
98 )))
99
100 (((
101 **External Temperature Sensor:**
102 )))
103
104 * (((
105 Resolution: 0.0625 °C
106 )))
107 * (((
108 ±0.5°C accuracy from -10°C to +85°C
109 )))
110 * (((
111 ±2°C accuracy from -55°C to +125°C
112 )))
113 * (((
114 Operating Range: -55 °C ~~ 125 °C
115 )))
116
117 = 2. Connect LHT65N to IoT Server =
118
119 == 2.1 How does LHT65N work? ==
120
121 (((
122 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.
123 )))
124
125 (((
126 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.
127 )))
128
129 == 2.2 How to Activate LHT65N? ==
130
131 The LHT65N has two working modes:
132
133 * **Deep Sleep Mode**: LHT65N doesn’t have any LoRaWAN activation. This mode is used for storage and shipping to save battery life.
134 * **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, LHT65 will be in STOP mode (IDLE mode), in STOP mode, LHT65N has the same power consumption as Deep Sleep mode. 
135
136 (((
137 The LHT65N is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
138 )))
139
140 [[image:image-20220515123819-1.png||height="379" width="317"]]
141
142 [[image:image-20220523153201-19.png||height="163" width="739"]]
143
144 == 2.3 Example to join LoRaWAN network ==
145
146 (% class="wikigeneratedid" %)
147 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.
148
149 (% class="wikigeneratedid" %)
150 [[image:image-20220522232442-1.png||height="387" width="648"]]
151
152 Assume the LPS8N is already set to connect to [[TTN V3 network>>url:https://eu1.cloud.thethings.network]], So it provides network coverage for LHT65N. Next we need to add the LHT65N device in TTN V3:
153
154
155 === 2.3.1 Step 1: Create Device n TTN ===
156
157 Create a device in TTN V3 with the OTAA keys from LHT65N.
158
159 Each LHT65N is shipped with a sticker with its device EUI, APP Key and APP EUI as below:
160
161 [[image:image-20220522232812-2.png||height="219" width="279"]]
162
163 User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:
164
165 Add APP EUI in the application.
166
167 [[image:image-20220522232916-3.png]]
168
169 [[image:image-20220522232932-4.png]]
170
171 [[image:image-20220522232954-5.png]]
172
173 Note: LHT65N use same payload as LHT65.
174
175 [[image:image-20220522233026-6.png]]
176
177
178 Input APP EUI,  APP KEY and DEV EUI:
179
180 [[image:image-20220522233118-7.png]]
181
182
183 === 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
184
185 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.
186
187 [[image:image-20220522233300-8.png||height="219" width="722"]]
188
189
190 == 2.4 Uplink Payload ==
191
192 The uplink payload includes totally 11 bytes. Uplink packets use FPORT=2 and (% style="color:#4f81bd" %)**every 20 minutes**(%%) send one uplink by default.
193
194 After each uplink, the (% style="color:blue" %)**BLUE LED**(%%) will blink once.
195
196 (% border="1" style="background-color:#ffffcc; color:green; width:426px" %)
197 |(% style="width:97px" %)(((
198 **Size(bytes)**
199 )))|(% style="width:39px" %)(((
200 **2**
201 )))|(% style="width:100px" %)(((
202 **2**
203 )))|(% style="width:77px" %)(((
204 **2**
205 )))|(% style="width:47px" %)(((
206 **1**
207 )))|(% style="width:51px" %)(((
208 **4**
209 )))
210 |(% style="width:97px" %)(((
211 **Value**
212 )))|(% style="width:39px" %)(((
213 [[BAT>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.2BAT-BatteryInfo]]
214 )))|(% style="width:100px" %)(((
215 (((
216 [[Built-In Temperature>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.3Built-inTemperature]]
217 )))
218 )))|(% style="width:77px" %)(((
219 (((
220 [[Built-in>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.4Built-inHumidity]]
221 )))
222
223 (((
224 [[Humidity>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.4Built-inHumidity]]
225 )))
226 )))|(% style="width:47px" %)(((
227 [[Ext>>path:#Extension_Sensor]] #
228 )))|(% style="width:51px" %)(((
229 [[Ext value>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.6Extvalue]]
230 )))
231
232 * The First 6 bytes: has fix meanings for every LHT65N.
233 * The 7th byte (EXT #): defines the external sensor model.
234 * The 8^^th^^ ~~ 11^^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.)
235
236 === 2.4.1 Decoder in TTN V3 ===
237
238 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.
239
240 Below is the position to put the decoder and LHT65N decoder can be download from here:
241
242 [[https:~~/~~/www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0 >>https://www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0]]
243
244 [[image:image-20220522234118-10.png||height="353" width="729"]]
245
246 === 2.4.2 BAT-Battery Info ===
247
248 These two bytes of BAT include the battery state and the actually voltage
249
250 [[image:image-20220523152839-18.png]]
251
252 [[image:image-20220522235639-1.png||height="139" width="727"]]
253
254 Check the battery voltage for LHT65N.
255
256 * BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
257 * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
258
259 === 2.4.3 Built-in Temperature ===
260
261 [[image:image-20220522235639-2.png||height="138" width="722"]]
262
263 * Temperature:  0x0ABB/100=27.47℃
264
265 [[image:image-20220522235639-3.png]]
266
267 * Temperature:  (0xF5C6-65536)/100=-26.18℃
268
269 === 2.4.4 Built-in Humidity ===
270
271 [[image:image-20220522235639-4.png||height="138" width="722"]]
272
273 * Humidity:    0x025C/10=60.4%
274
275 === 2.4.5 Ext # ===
276
277 Bytes for External Sensor:
278
279 [[image:image-20220523152822-17.png]]
280
281 === 2.4.6 Ext value ===
282
283 ==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
284
285 [[image:image-20220522235639-5.png]]
286
287 * DS18B20 temp=0x0ADD/100=27.81℃
288
289 The last 2 bytes of data are meaningless
290
291 [[image:image-20220522235639-6.png]]
292
293 * External temperature= (0xF54F-65536)/100=-27.37℃
294
295 (((
296 The last 2 bytes of data are meaningless
297 )))
298
299 (((
300 If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
301 )))
302
303
304 ==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
305
306 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:
307
308 (% border="1" style="background-color:#ffffcc; color:green; width:510px" %)
309 |(% style="width:96px" %)(((
310 **Size(bytes)**
311 )))|(% style="width:71px" %)(((
312 **2**
313 )))|(% style="width:99px" %)(((
314 **2**
315 )))|(% style="width:132px" %)(((
316 **2**
317 )))|(% style="width:54px" %)(((
318 **1**
319 )))|(% style="width:64px" %)(((
320 **4**
321 )))
322 |(% style="width:96px" %)(((
323 **Value**
324 )))|(% style="width:71px" %)(((
325 [[External temperature>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H4.2SetExternalSensorMode]]
326 )))|(% style="width:99px" %)(((
327 (((
328 [[Built-In>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.3Built-inTemperature]]
329 )))
330
331 (((
332 [[Temperature>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.3Built-inTemperature]]
333 )))
334 )))|(% style="width:132px" %)(((
335 (((
336 BAT Status &
337 )))
338
339 (((
340 [[Built-in Humidity>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.4Built-inHumidity]]
341 )))
342 )))|(% style="width:54px" %)(((
343 Status & Ext
344 )))|(% style="width:64px" %)(((
345 (((
346 [[Unix Time Stamp>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H4.1SetTransmitIntervalTime]]
347 )))
348 )))
349
350 * **Battery status & (% class="wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink" %)Built-in Humidity(%%)**
351
352 (% border="1" style="background-color:#ffffcc; color:green; width:469px" %)
353 |(% style="width:65px" %)Bit(bit)|(% style="width:267px" %)[15:14]|(% style="width:134px" %)[11:0]
354 |(% style="width:65px" %)Value|(% style="width:267px" %)(((
355 BAT Status
356
357 00(b): Ultra Low ( BAT <= 2.50v)
358
359 01(b): Low  (2.50v <=BAT <= 2.55v)
360
361 10(b): OK   (2.55v <= BAT <=2.65v)
362
363 11(b): Good   (BAT >= 2.65v)
364 )))|(% style="width:134px" %)(((
365 [[Built-in Humidity>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.4Built-inHumidity]]
366
367
368 )))
369
370 * **Status & Ext Byte**
371
372 [[image:image-20220523152434-16.png]]
373
374 * Poll Message Flag: 1: This message is a poll message reply, 0: means this is a normal uplink.
375 * 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.
376 * 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)
377
378 == 2.5 Show data on Datacake ==
379
380 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:
381
382 (((
383 **Step 1**: Be sure that your device is programmed and properly connected to the LoRaWAN network.
384 )))
385
386 (((
387 **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.
388 )))
389
390 (((
391 Add Datacake:
392 )))
393
394 [[image:image-20220523000825-7.png||height="262" width="583"]]
395
396
397 Select default key as Access Key:
398
399 [[image:image-20220523000825-8.png||height="453" width="406"]]
400
401 In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/]]) , add LHT65 device.
402
403 [[image:image-20220523000825-9.png||height="366" width="392"]]
404
405 [[image:image-20220523000825-10.png||height="413" width="728"]]
406
407 == 2.6 Datalog Feature ==
408
409 This feature is always enabled. When user wants to retrieve the sensor value, he can send a poll command from the IoT platform to ask LHT65N to send the value in the required time slot.
410
411 === 2.6.1 Unix TimeStamp ===
412
413 LHT65N uses Unix TimeStamp format based on
414
415 [[image:image-20220523001219-11.png||height="97" width="627"]]
416
417
418 (((
419 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :
420 )))
421
422 (((
423 Below is the converter example
424 )))
425
426 [[image:image-20220523001219-12.png||height="298" width="720"]]
427
428 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
429
430 === 2.6.2 Set Device Time ===
431
432 (((
433 There are two ways to set device’s time:
434 )))
435
436 (((
437 **~1. Through LoRaWAN MAC Command (Default settings)**
438 )))
439
440 (((
441 User need to set SYNCMOD=1 to enable sync time via MAC command.
442 )))
443
444 (((
445 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).
446 )))
447
448 (((
449 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.
450 )))
451
452 (((
453
454 )))
455
456 (((
457 **2. Manually Set Time**
458 )))
459
460 (((
461 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
462 )))
463
464 === 2.6.3 Poll sensor value ===
465
466 User can poll sensor value based on timestamps from the server. Below is the downlink command.
467
468 [[image:image-20220523152302-15.png]]
469
470 (((
471 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.
472 )))
473
474 (((
475 For example, downlink command **31 5FC5F350 5FC6 0160 05**
476 )))
477
478 (((
479 Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00’s data
480 )))
481
482 (((
483 Uplink Internal =5s，means LHT65N will send one packet every 5s. range 5~~255s.
484 )))
485
486
487 === 2.6.4 Datalog Uplink payload ===
488
489 The Datalog poll reply uplink will use below payload format.
490
491 (((
492 **Retrieval data payload**
493 )))
494
495 (% border="1" style="background-color:#ffffcc; color:green; width:510px" %)
496 |(% style="width:93px" %)(((
497 (((
498 **Size(bytes)**
499 )))
500 )))|(% style="width:71px" %)(((
501 (((
502 **2**
503 )))
504 )))|(% style="width:102px" %)(((
505 (((
506 **2**
507 )))
508 )))|(% style="width:86px" %)(((
509 (((
510 **2**
511 )))
512 )))|(% style="width:86px" %)(((
513 (((
514 **1**
515 )))
516 )))|(% style="width:48px" %)(((
517 (((
518 **4**
519 )))
520 )))
521 |(% style="width:93px" %)(((
522 (((
523 **Value**
524 )))
525 )))|(% style="width:71px" %)(((
526 (((
527 [[External sensor data>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.6Extvalue]]
528 )))
529 )))|(% style="width:102px" %)(((
530 (((
531 (((
532 [[Built In>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.3Built-inTemperature]]
533 )))
534 )))
535
536 (((
537 (((
538 [[Temperature>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.3Built-inTemperature]]
539 )))
540 )))
541 )))|(% style="width:86px" %)(((
542 (((
543 (((
544 [[Built-in>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.4Built-inHumidity]]
545 )))
546 )))
547
548 (((
549 (((
550 [[Humidity>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.4Built-inHumidity]]
551 )))
552 )))
553 )))|(% style="width:86px" %)(((
554 (((
555 [[Poll message flag & Ext>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.6.4DatalogUplinkpayload]]
556 )))
557 )))|(% style="width:48px" %)(((
558 (((
559 (((
560 [[Unix Time Stamp>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.6.1UnixTimeStamp]]
561 )))
562 )))
563
564 (((
565 (((
566
567 )))
568 )))
569 )))
570
571 **Poll message flag & Ext**
572
573 [[image:image-20220523152208-14.png]]
574
575 (((
576 (((
577 Poll Message Flag: 1: This message is a poll message reply.
578 )))
579 )))
580
581 * (((
582 (((
583 Poll Message Flag is set to 1.
584 )))
585 )))
586 * (((
587 (((
588 Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
589 )))
590 )))
591
592 (((
593 (((
594 For example, in US915 band, the max payload for different DR is:
595 )))
596 )))
597
598 (((
599 (((
600 a) DR0: max is 11 bytes so one entry of data
601 )))
602 )))
603
604 (((
605 (((
606 b) DR1: max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
607 )))
608 )))
609
610 (((
611 (((
612 c) DR2: total payload includes 11 entries of data
613 )))
614 )))
615
616 (((
617 (((
618 d) DR3: total payload includes 22 entries of data.
619 )))
620 )))
621
622 (((
623 (((
624 If devise doesn’t have any data in the polling time. Device will uplink 11 bytes of 0   
625 )))
626 )))
627
628
629 **Example:**
630
631 If LHT65N has below data inside Flash:
632
633 [[image:image-20220523144455-1.png||height="335" width="735"]]
634
635 (((
636 If user sends below downlink command: (% style="background-color:yellow" %)3160065F9760066DA705
637 )))
638
639 (((
640 Where : Start time: 60065F97 = time 21/1/19 04:27:03
641 )))
642
643 (((
644 Stop time 60066DA7= time 21/1/19 05:27:03
645 )))
646
647 (((
648
649 )))
650
651 (((
652 LHT65N will uplink this payload.
653 )))
654
655 [[image:image-20220523001219-13.png||height="421" width="727"]]
656
657 7FFF089801464160065F977FFF088E014B41600660097FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
658
659 Where the first 11 bytes is for the first entry:
660
661 7FFF089801464160065F97
662
663 Ext sensor data=0x7FFF/100=327.67
664
665 Temp=0x0898/100=22.00
666
667 Hum=0x0146/10=32.6
668
669 poll message flag & Ext=0x41,means reply data,Ext=1
670
671 Unix time is 0x60065F97=1611030423s=21/1/19 04:27:03
672
673 == 2.7 Alarm Mode ==
674
675 Alarm mode feature is added since firmware v1.5. When device is in Alarm mode, it will check the built-in sensor temperature in a short interval. If the temperature exceeds the pre-configure range, it will send an uplink immediately.
676
677 (((
678 (% style="color:red" %)Note: Alarm mode will increase a little big the power consumption, we recommend extending the normal reading time when enabling this feature.
679 )))
680
681 (((
682 **AT Commands for Alarm mode:**
683 )))
684
685 (% class="box infomessage" %)
686 (((
687 (((
688 **AT+WMOD=1**: Enable/Disable Alarm Mode. (0:Disable, 1: Enable)
689 )))
690 )))
691
692 (% class="box infomessage" %)
693 (((
694 (((
695 **AT+CITEMP=1**: The interval to check the temperature for Alarm. (Unit: minute)
696 )))
697 )))
698
699 == 2.8 LED Indicator ==
700
701 (((
702 The LHT65N has a triple color LED which for easy shows different stage.
703 )))
704
705 (((
706 While pressing ACT button, the LED will work as per LED status with ACT button.
707 )))
708
709 (((
710 In a normal working state:
711 )))
712
713 * (((
714 For each uplink, the BLUE LED or RED LED will blink once.
715 )))
716 * (((
717 BLUE LED when an external sensor is connected
718 )))
719 * (((
720 RED LED when an external sensor is not connected
721 )))
722 * (((
723 For each success downlink, the PURPLE LED will blink once
724 )))
725
726 ----
727
728 == 2.9 Installation ==
729
730 [[image:image-20220516231650-1.png||height="436" width="428"]]
731
732 = 3. Sensors & Accessories =
733
734 == 3.1 E3 Temperature Probe ==
735
736 [[image:image-20220515080154-4.png||height="182" width="161"]] [[image:image-20220515080330-5.png||height="201" width="195"]]
737
738
739 With Temperature sensor with 2 meters cable long
740
741 * Resolution: 0.0625 °C
742 * ±0.5°C accuracy from -10°C to +85°C
743 * ±2°C accuracy from -55°C to +125°C
744 * Operating Range: -40 ~~ 125 °C
745 * -55°C to 125°C
746 * Working voltage 2.35v ~~ 5v
747
748 = 4. Configure LHT65N via AT Command or LoRaWAN Downlink =
749
750 (((
751 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
752 )))
753
754 * (((
755 AT Command Connection: See [[FAQ>>path:#AT_COMMAND]].
756 )))
757 * (((
758 LoRaWAN Downlink instruction for different platforms:
759 )))
760
761 (((
762 [[http:~~/~~/wiki.dragino.com/index.php?title=Main_Page#Use_Note_for_Server>>url:http://wiki.dragino.com/index.php?title=Main_Page#Use_Note_for_Server]]
763 )))
764
765 (((
766 There are two kinds of commands to configure LHT65N, they are:
767 )))
768
769 (((
770 (% style="color:#4f81bd" %)* **General Commands**.
771 )))
772
773 (((
774 These commands are to configure:
775 )))
776
777 * (((
778 General system settings like: uplink interval.
779 )))
780 * (((
781 LoRaWAN protocol & radio-related commands.
782 )))
783
784 (((
785 They are the same for all Dragino Devices which supports DLWS-005 LoRaWAN Stack(Note~*~*). These commands can be found on the wiki:
786 )))
787
788 (((
789 [[http:~~/~~/wiki.dragino.com/index.php?title=End_Device_Downlink_Command>>url:http://wiki.dragino.com/index.php?title=End_Device_Downlink_Command]]
790 )))
791
792 (((
793 (% style="color:#4f81bd" %)* **Commands special design for LHT65N**
794 )))
795
796 (((
797 These commands are only valid for LHT65N, as below:
798 )))
799
800 == 4.1 Set Transmit Interval Time ==
801
802 Feature: Change LoRaWAN End Node Transmit Interval.
803
804 **AT Command: AT+TDC**
805
806 [[image:image-20220523150701-2.png]]
807
808 (((
809 **Downlink Command: 0x01**
810 )))
811
812 (((
813 Format: Command Code (0x01) followed by 3 bytes time value.
814 )))
815
816 (((
817 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
818 )))
819
820 * (((
821 **Example 1**: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
822 )))
823 * (((
824 **Example 2**: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
825 )))
826
827 == 4.2 Set External Sensor Mode ==
828
829 Feature: Change External Sensor Mode.
830
831 **AT Command: AT+EXT**
832
833 [[image:image-20220523150759-3.png]]
834
835 (((
836 **Downlink Command: 0xA2**
837 )))
838
839 (((
840 Total bytes: 2 ~~ 5 bytes
841 )))
842
843 (((
844 **Example:**
845 )))
846
847 * (((
848 0xA201: Set external sensor type to E1
849 )))
850 * (((
851 0xA209: Same as AT+EXT=9
852 )))
853 * (((
854 0xA20702003c,Same as AT+SETCNT=60
855 )))
856
857 == 4.3 Enable/Disable uplink Temperature probe ID ==
858
859 Feature: If PID is enabled, device will send the temperature probe ID on:
860
861 * First Packet after OTAA Join
862 * Every 24 hours since the first packet.
863
864 PID is default set to disable (0)
865
866 **AT Command:**
867
868 [[image:image-20220523150928-4.png]]
869
870 **Downlink Command:**
871
872 * 0xA800  **~-~->** AT+PID=0
873 * 0xA801     **~-~->** AT+PID=1
874
875 == 4.4 Set Password ==
876
877 Feature: Set device password, max 9 digits
878
879 **AT Command: AT+PWORD**
880
881 [[image:image-20220523151052-5.png]]
882
883 (((
884 **Downlink Command:**
885 )))
886
887 (((
888 No downlink command for this feature.
889 )))
890
891 == 4.5 Quit AT Command ==
892
893 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
894
895 **AT Command: AT+DISAT**
896
897 [[image:image-20220523151132-6.png]]
898
899 **Downlink Command:**
900
901 No downlink command for this feature.
902
903 == 4.6 Set to sleep mode ==
904
905 Feature: Set device to sleep mode
906
907 **AT Command: AT+SLEEP**
908
909 [[image:image-20220523151218-7.png]]
910
911 **Downlink Command:**
912
913 * There is no downlink command to set to Sleep mode.
914
915 == 4.7 Set system time ==
916
917 Feature: Set system time, unix format. [[See here for format detail.>>path:#TimeStamp]]
918
919 **AT Command:**
920
921 [[image:image-20220523151253-8.png]]
922
923 **Downlink Command:**
924
925 0x306007806000 ~/~/ Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
926
927 == 4.8 Set Time Sync Mode ==
928
929 (((
930 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
931 )))
932
933 (((
934 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.
935 )))
936
937 (((
938 **AT Command:**
939 )))
940
941 [[image:image-20220523151336-9.png]]
942
943 **Downlink Command:**
944
945 0x28 01 ~/~/ Same As AT+SYNCMOD=1
946
947 0x28 00 ~/~/ Same As AT+SYNCMOD=0
948
949 == 4.9 Set Time Sync Interval ==
950
951 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
952
953 **AT Command:**
954
955 [[image:image-20220523151411-10.png]]
956
957 **Downlink Command:**
958
959 0x29 0A ~/~/ Same as AT+SYNCTDC=0x0A
960
961 == 4.10 Print data entries base on page. ==
962
963 Feature: Print the sector data from start page to stop page (max is 416 pages).
964
965 **AT Command: AT+PDTA**
966
967 [[image:image-20220523151450-11.png]]
968
969 **Downlink Command:**
970
971 No downlink commands for feature
972
973 == 4.11 Print last few data entries. ==
974
975 Feature: Print the last few data entries
976
977 **AT Command: AT+PLDTA**
978
979 [[image:image-20220523151524-12.png]]
980
981 **Downlink Command:**
982
983 No downlink commands for feature
984
985 == 4.12 Clear Flash Record ==
986
987 Feature: Clear flash storage for data log feature.
988
989 **AT Command: AT+CLRDTA**
990
991 [[image:image-20220523151556-13.png]]
992
993 **Downlink Command: 0xA3**
994
995 * Example: 0xA301 ~/~/Same as AT+CLRDTA
996
997 = 5. Battery & How to replace =
998
999 == 5.1 Battery Type ==
1000
1001 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.
1002
1003 (((
1004 The discharge curve is not linear so can’t simply use percentage to show the battery level. Below is the battery performance.
1005 [[image:image-20220515075034-1.png||height="208" width="644"]]
1006 )))
1007
1008 (((
1009 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1010
1011 )))
1012
1013 == 5.2 Replace Battery ==
1014
1015 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.
1016
1017 [[image:image-20220515075440-2.png||height="338" width="272"]][[image:image-20220515075625-3.png||height="193" width="257"]]
1018
1019 == 5.3 Battery Life Analyze ==
1020
1021 (((
1022 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:
1023 https:~/~/www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf
1024 )))
1025
1026 = 6. Order Info =
1027
1028 (((
1029 Part Number: (% style="color:#4f81bd" %)** LHT65N-XX-YY**
1030 )))
1031
1032 (((
1033 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
1034 )))
1035
1036 * (((
1037 (% style="color:#4f81bd" %)** AS923**(%%): LoRaWAN AS923 band
1038 )))
1039 * (((
1040 (% style="color:#4f81bd" %)** AU915**(%%): LoRaWAN AU915 band
1041 )))
1042 * (((
1043 (% style="color:#4f81bd" %)** EU433**(%%): LoRaWAN EU433 band
1044 )))
1045 * (((
1046 (% style="color:#4f81bd" %)** EU868**(%%): LoRaWAN EU868 band
1047 )))
1048 * (((
1049 (% style="color:#4f81bd" %)** KR920**(%%): LoRaWAN KR920 band
1050 )))
1051 * (((
1052 (% style="color:#4f81bd" %)** US915**(%%): LoRaWAN US915 band
1053 )))
1054 * (((
1055 (% style="color:#4f81bd" %)** IN865**(%%): LoRaWAN IN865 band
1056 )))
1057 * (((
1058 (% style="color:#4f81bd" %)** CN470**(%%): LoRaWAN CN470 band
1059 )))
1060
1061 (((
1062 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
1063 )))
1064
1065 * (((
1066 (% style="color:#4f81bd" %)**E3**(%%): External Temperature Probe
1067 )))
1068
1069 = 7. Packing Info =
1070
1071 (((
1072 **Package Includes**:
1073 )))
1074
1075 * (((
1076 LHT65N Temperature & Humidity Sensor x 1
1077 )))
1078 * (((
1079 Program cable x 1
1080 )))
1081 * (((
1082 Optional external sensor
1083 )))
1084
1085 (((
1086 **Dimension and weight**:
1087 )))
1088
1089 * (((
1090 Device Size:  13.5 x 7 x 3 cm
1091 )))
1092 * (((
1093 Device Weight: 105g
1094 )))
1095 * (((
1096 Package Size / pcs : 14.5 x 8 x 5 cm
1097 )))
1098 * (((
1099 Weight / pcs : 170g
1100 )))
1101
1102 = 8. FCC Warning =
1103
1104 (((
1105 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
1106 )))
1107
1108 (((
1109 (1) This device may not cause harmful interference；
1110 )))
1111
1112 (((
1113 (2) this device must accept any interference received, including interference that may cause undesired operation.
1114 )))