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1 (% style="text-align:center" %)
2 [[image:image-20220523115324-1.jpeg||height="500" width="500"]]
3
4
5 **LHT65N LoRaWAN Temperature & Humidity Sensor Manual**
6
7
8
9 **Table of Contents:**
10
11 {{toc/}}
12
13
14
15 = 1.Introduction =
16
17 == 1.1 What is LHT65N Temperature & Humidity Sensor ==
18
19 (((
20 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**(%%)**.**
21 )))
22
23 (((
24 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.
25 )))
26
27 (((
28 LHT65N has a built-in 2400mAh non-chargeable battery which can be used for up to 10 years*.
29 )))
30
31 (((
32 LHT65N is full compatible with LoRaWAN v1.0.3 Class A protocol, it can work with a standard LoRaWAN gateway.
33 )))
34
35 (((
36 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.
37 )))
38
39 (((
40 *The actual battery life depends on how often to send data, please see the battery analyzer chapter.
41 )))
42
43 == 1.2 Features ==
44
45 * Wall mountable
46 * LoRaWAN v1.0.3 Class A protocol
47 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915
48 * AT Commands to change parameters
49 * Remote configure parameters via LoRaWAN Downlink
50 * Firmware upgradeable via program port
51 * Built-in 2400mAh battery for up to 10 years of use.
52 * Built-in Temperature & Humidity sensor
53 * Optional External Sensors
54 * Tri-color LED to indicate working status
55 * Datalog feature
56
57 == 1.3 Specification ==
58
59 (((
60 **Built-in Temperature Sensor:**
61 )))
62
63 * (((
64 Resolution: 0.01 °C
65 )))
66 * (((
67 Accuracy Tolerance : Typ ±0.3 °C
68 )))
69 * (((
70 Long Term Drift: < 0.02 °C/yr
71 )))
72 * (((
73 Operating Range: -40 ~~ 85 °C
74 )))
75
76 (((
77 **Built-in Humidity Sensor:**
78 )))
79
80 * (((
81 Resolution: 0.04 %RH
82 )))
83 * (((
84 Accuracy Tolerance : Typ ±3 %RH
85 )))
86 * (((
87 Long Term Drift: < 0.02 °C/yr
88 )))
89 * (((
90 Operating Range: 0 ~~ 96 %RH
91 )))
92
93 (((
94 **External Temperature Sensor:**
95 )))
96
97 * (((
98 Resolution: 0.0625 °C
99 )))
100 * (((
101 ±0.5°C accuracy from -10°C to +85°C
102 )))
103 * (((
104 ±2°C accuracy from -55°C to +125°C
105 )))
106 * (((
107 Operating Range: -55 °C ~~ 125 °C
108 )))
109
110 = 2. Connect LHT65N to IoT Server =
111
112 == 2.1 How does LHT65N work? ==
113
114 (((
115 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.
116 )))
117
118 (((
119 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.
120 )))
121
122 == 2.2 How to Activate LHT65N? ==
123
124 The LHT65N has two working modes:
125
126 * **Deep Sleep Mode**: LHT65N doesn’t have any LoRaWAN activation. This mode is used for storage and shipping to save battery life.
127 * **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. 
128
129 (((
130 The LHT65N is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
131 )))
132
133 [[image:image-20220515123819-1.png||height="379" width="317"]]
134
135 (% border="1" style="background-color:#ffffcc; color:green; width:739px" %)
136 |**Behavior on ACT**|**Function**|(% style="width:424px" %)**Action**
137 |**Pressing ACT between 1s < time < 3s**|Test uplink status|(% style="width:424px" %)If LHT65N is already Joined to the LoRaWAN network, LHT65N will send an uplink packet, if LHT65N has an external sensor connected, blue led will blink once. If LHT65N has no external sensor, red led will blink once.
138 |**Pressing ACT for more than 3s**|Active Device|(% style="width:424px" %)green led will fast blink 5 times, LHT65N will enter working mode and start to JOIN LoRaWAN network. green led will solid turn on for 5 seconds after join in network.
139 |**Fast press ACT 5 times**|Deactivate Device|(% style="width:424px" %)red led will solid on for 5 seconds. This means LHT65N is in Deep Sleep Mode.
140
141 == 2.3 Example to join LoRaWAN network ==
142
143 (% class="wikigeneratedid" %)
144 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.
145
146 (% class="wikigeneratedid" %)
147 [[image:image-20220522232442-1.png||height="387" width="648"]]
148
149 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:
150
151
152 === 2.3.1 Step 1: Create Device n TTN ===
153
154 Create a device in TTN V3 with the OTAA keys from LHT65N.
155
156 Each LHT65N is shipped with a sticker with its device EUI, APP Key and APP EUI as below:
157
158 [[image:image-20220522232812-2.png||height="219" width="279"]]
159
160 User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:
161
162 Add APP EUI in the application.
163
164 [[image:image-20220522232916-3.png]]
165
166 [[image:image-20220522232932-4.png]]
167
168 [[image:image-20220522232954-5.png]]
169
170 Note: LHT65N use same payload as LHT65.
171
172 [[image:image-20220522233026-6.png]]
173
174
175 Input APP EUI,  APP KEY and DEV EUI:
176
177 [[image:image-20220522233118-7.png]]
178
179
180 === 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
181
182 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.
183
184 [[image:image-20220522233300-8.png||height="219" width="722"]]
185
186
187 == 2.4 Uplink Payload ==
188
189 The uplink payload includes totally 11 bytes. Uplink packets use FPORT=2 and (% style="color:#4f81bd" %)**every 20 minutes**(%%) send one uplink by default.
190
191 After each uplink, the (% style="color:blue" %)**BLUE LED**(%%) will blink once.
192
193
194 (% border="1" style="background-color:#ffffcc; color:green; width:428px" %)
195 |(% style="width:106px" %)(((
196 **Size(bytes)**
197 )))|(% style="width:46px" %)(((
198 **2**
199 )))|(% style="width:104px" %)(((
200 **2**
201 )))|(% style="width:80px" %)(((
202 **2**
203 )))|(% style="width:51px" %)(((
204 **1**
205 )))|(% style="width:35px" %)(((
206 **4**
207 )))
208 |(% style="width:106px" %)(((
209 **Value**
210 )))|(% style="width:46px" %)(((
211 [[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]]
212 )))|(% style="width:104px" %)(((
213 (((
214 [[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]]
215 )))
216
217 (((
218 [[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]]
219 )))
220 )))|(% style="width:80px" %)(((
221 (((
222 [[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]]
223 )))
224
225 (((
226 [[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]]
227 )))
228 )))|(% style="width:51px" %)(((
229 [[Ext>>path:#Extension_Sensor]] #
230 )))|(% style="width:35px" %)(((
231 [[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]]
232 )))
233
234 * The First 6 bytes: has fix meanings for every LHT65N.
235 * The 7th byte (EXT #): defines the external sensor model.
236 * 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.)
237
238 === 2.4.1 Decoder in TTN V3 ===
239
240 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.
241
242 Below is the position to put the decoder and LHT65N decoder can be download from here:
243
244 [[https:~~/~~/www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0 >>https://www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0]]
245
246 [[image:image-20220522234118-10.png||height="353" width="729"]]
247
248 === 2.4.2 BAT-Battery Info ===
249
250 These two bytes of BAT include the battery state and the actually voltage
251
252 (% border="1" style="background-color:#ffffcc; color:green; width:502px" %)
253 |(% style="width:75px" %)(((
254 Bit(bit)
255 )))|(% style="width:259px" %)(((
256 [15:14]
257 )))|(% style="width:164px" %)(((
258 [13:0]
259 )))
260 |(% style="width:75px" %)(((
261 Value
262 )))|(% style="width:259px" %)(((
263 (((
264 BAT Status
265 )))
266
267 (((
268 00(b): Ultra Low ( BAT <= 2.50v)
269 )))
270
271 (((
272 01(b): Low  (2.50v <=BAT <= 2.55v)
273 )))
274
275 (((
276 10(b): OK   (2.55v <= BAT <=2.65v)
277 )))
278
279 (((
280 11(b): Good   (BAT >= 2.65v)
281 )))
282 )))|(% style="width:164px" %)(((
283 Actually BAT voltage
284 )))
285
286 [[image:image-20220522235639-1.png||height="139" width="727"]]
287
288 Check the battery voltage for LHT65N.
289
290 * BAT status=(0Xcba4>>14)&0xFF=11(B),very good
291 * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
292
293 === 2.4.3 Built-in Temperature ===
294
295 [[image:image-20220522235639-2.png||height="138" width="722"]]
296
297 * Temperature:  0x0ABB/100=27.47℃
298
299 [[image:image-20220522235639-3.png]]
300
301 * Temperature:  (0xF5C6-65536)/100=-26.18℃
302
303 === 2.4.4 Built-in Humidity ===
304
305 [[image:image-20220522235639-4.png||height="138" width="722"]]
306
307 * Humidity:    0x025C/10=60.4%
308
309 === 2.4.5 Ext # ===
310
311 Bytes for External Sensor:
312
313 (% border="1" style="background-color:#ffffcc; color:green; width:473px" %)
314 |(% style="width:139px" %)**EXT # Value**|(% style="width:331px" %)**External Sensor Type**
315 |(% style="width:139px" %)0x01|(% style="width:331px" %)Sensor E3, Temperature Sensor
316 |(% style="width:139px" %)0x09|(% style="width:331px" %)Sensor E3, Temperature Sensor, Datalog Mod
317
318 === 2.4.6 Ext value ===
319
320 ==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
321
322 [[image:image-20220522235639-5.png]]
323
324 * DS18B20 temp=0x0ADD/100=27.81℃
325
326 The last 2 bytes of data are meaningless
327
328 [[image:image-20220522235639-6.png]]
329
330 * External temperature= (0xF54F-65536)/100=-27.37℃
331
332 (((
333 The last 2 bytes of data are meaningless
334 )))
335
336 (((
337 If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
338 )))
339
340
341 ==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
342
343 Timestamp mode is designed for LHT65N with E3 probe, it will send the uplink payload with Unix timestamp. With the limitation of 11 bytes (max distance of AU915/US915/AS923 band), the time stamp mode will be lack of BAT voltage field, instead, it shows the battery status. The payload is as below:
344
345 (% border="1" style="background-color:#ffffcc; color:green; width:568px" %)
346 |(% style="width:96px" %)**Size(bytes)**|(% style="width:71px" %)**2**|(% style="width:99px" %)**2**|(% style="width:132px" %)**2**|(% style="width:54px" %)**1**|(% style="width:64px" %)**4**
347 |(% style="width:96px" %)(((
348 **Value**
349 )))|(% style="width:71px" %)(((
350 [[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]]
351 )))|(% style="width:99px" %)(((
352 (((
353 [[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]]
354 )))
355
356 (((
357 [[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]]
358 )))
359 )))|(% style="width:132px" %)(((
360 (((
361 BAT Status &
362 )))
363
364 (((
365 [[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]]
366 )))
367 )))|(% style="width:54px" %)(((
368 Status & Ext
369 )))|(% style="width:64px" %)(((
370 (((
371 [[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]]
372 )))
373 )))
374
375 * **Battery status & (% class="wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink" %)Built-in Humidity(%%)**
376
377 (% border="1" style="background-color:#ffffcc; color:green; width:469px" %)
378 |(% style="width:65px" %)Bit(bit)|(% style="width:267px" %)[15:14]|(% style="width:134px" %)[11:0]
379 |(% style="width:65px" %)Value|(% style="width:267px" %)(((
380 BAT Status
381
382 00(b): Ultra Low ( BAT <= 2.50v)
383
384 01(b): Low  (2.50v <=BAT <= 2.55v)
385
386 10(b): OK   (2.55v <= BAT <=2.65v)
387
388 11(b): Good   (BAT >= 2.65v)
389 )))|(% style="width:134px" %)(((
390 [[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]]
391
392
393 )))
394
395 * **Status & Ext Byte**
396
397 [[image:image-20220523152434-16.png]]
398
399 * Poll Message Flag: 1: This message is a poll message reply, 0: means this is a normal uplink.
400 * 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.
401 * 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)
402
403 == 2.5 Show data on Datacake ==
404
405 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:
406
407 (((
408 **Step 1**: Be sure that your device is programmed and properly connected to the LoRaWAN network.
409 )))
410
411 (((
412 **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.
413 )))
414
415 (((
416 Add Datacake:
417 )))
418
419 [[image:image-20220523000825-7.png||height="262" width="583"]]
420
421
422 Select default key as Access Key:
423
424 [[image:image-20220523000825-8.png||height="453" width="406"]]
425
426 In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/]]) , add LHT65 device.
427
428 [[image:image-20220523000825-9.png||height="366" width="392"]]
429
430 [[image:image-20220523000825-10.png||height="413" width="728"]]
431
432 == 2.6 Datalog Feature ==
433
434 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.
435
436 === 2.6.1 Unix TimeStamp ===
437
438 LHT65N uses Unix TimeStamp format based on
439
440 [[image:image-20220523001219-11.png||height="97" width="627"]]
441
442
443 (((
444 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :
445 )))
446
447 (((
448 Below is the converter example
449 )))
450
451 [[image:image-20220523001219-12.png||height="298" width="720"]]
452
453 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
454
455 === 2.6.2 Set Device Time ===
456
457 (((
458 There are two ways to set device’s time:
459 )))
460
461 (((
462 **~1. Through LoRaWAN MAC Command (Default settings)**
463 )))
464
465 (((
466 User need to set SYNCMOD=1 to enable sync time via MAC command.
467 )))
468
469 (((
470 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).
471 )))
472
473 (((
474 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.
475 )))
476
477 (((
478
479 )))
480
481 (((
482 **2. Manually Set Time**
483 )))
484
485 (((
486 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
487 )))
488
489 === 2.6.3 Poll sensor value ===
490
491 User can poll sensor value based on timestamps from the server. Below is the downlink command.
492
493 [[image:image-20220523152302-15.png]]
494
495 (((
496 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.
497 )))
498
499 (((
500 For example, downlink command **31 5FC5F350 5FC6 0160 05**
501 )))
502
503 (((
504 Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00’s data
505 )))
506
507 (((
508 Uplink Internal =5s,means LHT65N will send one packet every 5s. range 5~~255s.
509 )))
510
511
512 === 2.6.4 Datalog Uplink payload ===
513
514 The Datalog poll reply uplink will use below payload format.
515
516 (((
517 **Retrieval data payload**
518 )))
519
520 (% border="1" style="background-color:#ffffcc; color:green; width:545px" %)
521 |(% style="width:93px" %)(((
522 **Size(bytes)**
523 )))|(% style="width:71px" %)(((
524 **2**
525 )))|(% style="width:102px" %)(((
526 **2**
527 )))|(% style="width:86px" %)(((
528 **2**
529 )))|(% style="width:90px" %)(((
530 **1**
531 )))|(% style="width:85px" %)(((
532 **4**
533 )))
534 |(% style="width:93px" %)(((
535 **Value**
536 )))|(% style="width:71px" %)(((
537 [[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]]
538 )))|(% style="width:102px" %)(((
539 (((
540 [[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]]
541 )))
542
543 (((
544 [[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]]
545 )))
546 )))|(% style="width:86px" %)(((
547 (((
548 [[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]]
549 )))
550
551 (((
552 [[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]]
553 )))
554 )))|(% style="width:90px" %)(((
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 )))|(% style="width:85px" %)(((
557 (((
558 [[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]]
559 )))
560
561 (((
562
563 )))
564 )))
565
566 **Poll message flag & Ext**
567
568 [[image:image-20220523152208-14.png]]
569
570 (((
571 (((
572 Poll Message Flag: 1: This message is a poll message reply.
573 )))
574 )))
575
576 * (((
577 (((
578 Poll Message Flag is set to 1.
579 )))
580 )))
581 * (((
582 (((
583 Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
584 )))
585 )))
586
587 (((
588 (((
589 For example, in US915 band, the max payload for different DR is:
590 )))
591 )))
592
593 (((
594 (((
595 a) DR0: max is 11 bytes so one entry of data
596 )))
597 )))
598
599 (((
600 (((
601 b) DR1: max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
602 )))
603 )))
604
605 (((
606 (((
607 c) DR2: total payload includes 11 entries of data
608 )))
609 )))
610
611 (((
612 (((
613 d) DR3: total payload includes 22 entries of data.
614 )))
615 )))
616
617 (((
618 (((
619 If devise doesn’t have any data in the polling time. Device will uplink 11 bytes of 0   
620 )))
621 )))
622
623
624 **Example:**
625
626 If LHT65N has below data inside Flash:
627
628 [[image:image-20220523144455-1.png||height="335" width="735"]]
629
630 If user sends below downlink command: (% style="background-color:yellow" %)3160065F9760066DA705
631
632 Where : Start time: 60065F97 = time 21/1/19 04:27:03
633
634 Stop time 60066DA7= time 21/1/19 05:27:03
635
636
637 LHT65N will uplink this payload.
638
639 [[image:image-20220523001219-13.png||height="421" width="727"]]
640
641 7FFF089801464160065F977FFF088E014B41600660097FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
642
643 Where the first 11 bytes is for the first entry:
644
645 7FFF089801464160065F97
646
647 Ext sensor data=0x7FFF/100=327.67
648
649 Temp=0x0898/100=22.00
650
651 Hum=0x0146/10=32.6
652
653 poll message flag & Ext=0x41,means reply data,Ext=1
654
655 Unix time is 0x60065F97=1611030423s=21/1/19 04:27:03
656
657 == 2.7 Alarm Mode ==
658
659 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.
660
661 (% 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.
662
663 **AT Commands for Alarm mode:**
664
665 (% class="box infomessage" %)
666 (((
667 **AT+WMOD=1**: Enable/Disable Alarm Mode. (0:Disable, 1: Enable)
668 )))
669
670 (% class="box infomessage" %)
671 (((
672 **AT+CITEMP=1**: The interval to check the temperature for Alarm. (Unit: minute)
673 )))
674
675 == 2.8 LED Indicator ==
676
677 (((
678 The LHT65N has a triple color LED which for easy shows different stage.
679 )))
680
681 (((
682 While pressing ACT button, the LED will work as per LED status with ACT button.
683 )))
684
685 (((
686 In a normal working state:
687 )))
688
689 * (((
690 For each uplink, the BLUE LED or RED LED will blink once.
691 )))
692 * (((
693 BLUE LED when an external sensor is connected
694 )))
695 * (((
696 RED LED when an external sensor is not connected
697 )))
698 * (((
699 For each success downlink, the PURPLE LED will blink once
700 )))
701
702 ----
703
704 == 2.9 Installation ==
705
706 [[image:image-20220516231650-1.png||height="436" width="428"]]
707
708 = 3. Sensors & Accessories =
709
710 == 3.1 E3 Temperature Probe ==
711
712 [[image:image-20220515080154-4.png||height="182" width="161"]] [[image:image-20220515080330-5.png||height="201" width="195"]]
713
714
715 With Temperature sensor with 2 meters cable long
716
717 * Resolution: 0.0625 °C
718 * ±0.5°C accuracy from -10°C to +85°C
719 * ±2°C accuracy from -55°C to +125°C
720 * Operating Range: -40 ~~ 125 °C
721 * -55°C to 125°C
722 * Working voltage 2.35v ~~ 5v
723
724 = 4. Configure LHT65N via AT Command or LoRaWAN Downlink =
725
726 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
727
728 * AT Command Connection: See [[FAQ>>path:#AT_COMMAND]].
729 * LoRaWAN Downlink instruction for different platforms:
730
731 [[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]]
732
733 There are two kinds of commands to configure LHT65N, they are:
734
735 (% style="color:#4f81bd" %)* **General Commands**.
736
737 These commands are to configure:
738
739 * General system settings like: uplink interval.
740 * LoRaWAN protocol & radio-related commands.
741
742 They are the same for all Dragino Devices which supports DLWS-005 LoRaWAN Stack(Note~*~*). These commands can be found on the wiki:
743
744 [[http:~~/~~/wiki.dragino.com/index.php?title=End_Device_Downlink_Command>>url:http://wiki.dragino.com/index.php?title=End_Device_Downlink_Command]]
745
746 (% style="color:#4f81bd" %)* **Commands special design for LHT65N**
747
748 These commands are only valid for LHT65N, as below:
749
750 == 4.1 Set Transmit Interval Time ==
751
752 Feature: Change LoRaWAN End Node Transmit Interval.
753
754 **AT Command: AT+TDC**
755
756 [[image:image-20220523150701-2.png]]
757
758 **Downlink Command: 0x01**
759
760 Format: Command Code (0x01) followed by 3 bytes time value.
761
762 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
763
764 * **Example 1**: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
765 * **Example 2**: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
766
767 == 4.2 Set External Sensor Mode ==
768
769 Feature: Change External Sensor Mode.
770
771 **AT Command: AT+EXT**
772
773 [[image:image-20220523150759-3.png]]
774
775 **Downlink Command: 0xA2**
776
777 Total bytes: 2 ~~ 5 bytes
778
779 **Example:**
780
781 * 0xA201: Set external sensor type to E1
782 * 0xA209: Same as AT+EXT=9
783 * 0xA20702003c,Same as AT+SETCNT=60
784
785 == 4.3 Enable/Disable uplink Temperature probe ID ==
786
787 Feature: If PID is enabled, device will send the temperature probe ID on:
788
789 * First Packet after OTAA Join
790 * Every 24 hours since the first packet.
791
792 PID is default set to disable (0)
793
794 **AT Command:**
795
796 [[image:image-20220523150928-4.png]]
797
798 **Downlink Command:**
799
800 * 0xA800  **~-~->** AT+PID=0
801 * 0xA801     **~-~->** AT+PID=1
802
803 == 4.4 Set Password ==
804
805 Feature: Set device password, max 9 digits
806
807 **AT Command: AT+PWORD**
808
809 [[image:image-20220523151052-5.png]]
810
811 **Downlink Command:**
812
813 No downlink command for this feature.
814
815 == 4.5 Quit AT Command ==
816
817 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
818
819 **AT Command: AT+DISAT**
820
821 [[image:image-20220523151132-6.png]]
822
823 **Downlink Command:**
824
825 No downlink command for this feature.
826
827 == 4.6 Set to sleep mode ==
828
829 Feature: Set device to sleep mode
830
831 **AT Command: AT+SLEEP**
832
833 [[image:image-20220523151218-7.png]]
834
835 **Downlink Command:**
836
837 * There is no downlink command to set to Sleep mode.
838
839 == 4.7 Set system time ==
840
841 Feature: Set system time, unix format. [[See here for format detail.>>path:#TimeStamp]]
842
843 **AT Command:**
844
845 [[image:image-20220523151253-8.png]]
846
847 **Downlink Command:**
848
849 0x306007806000 ~/~/ Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
850
851 == 4.8 Set Time Sync Mode ==
852
853 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
854
855 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.
856
857 **AT Command:**
858
859 [[image:image-20220523151336-9.png]]
860
861 **Downlink Command:**
862
863 0x28 01 ~/~/ Same As AT+SYNCMOD=1
864
865 0x28 00 ~/~/ Same As AT+SYNCMOD=0
866
867 == 4.9 Set Time Sync Interval ==
868
869 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
870
871 **AT Command:**
872
873 [[image:image-20220523151411-10.png]]
874
875 **Downlink Command:**
876
877 0x29 0A ~/~/ Same as AT+SYNCTDC=0x0A
878
879 == 4.10 Print data entries base on page. ==
880
881 Feature: Print the sector data from start page to stop page (max is 416 pages).
882
883 **AT Command: AT+PDTA**
884
885 [[image:image-20220523151450-11.png]]
886
887 **Downlink Command:**
888
889 No downlink commands for feature
890
891 == 4.11 Print last few data entries. ==
892
893 Feature: Print the last few data entries
894
895 **AT Command: AT+PLDTA**
896
897 [[image:image-20220523151524-12.png]]
898
899 **Downlink Command:**
900
901 No downlink commands for feature
902
903 == 4.12 Clear Flash Record ==
904
905 Feature: Clear flash storage for data log feature.
906
907 **AT Command: AT+CLRDTA**
908
909 [[image:image-20220523151556-13.png]]
910
911 **Downlink Command: 0xA3**
912
913 * Example: 0xA301 ~/~/Same as AT+CLRDTA
914
915 = 5. Battery & How to replace =
916
917 == 5.1 Battery Type ==
918
919 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.
920
921 (((
922 The discharge curve is not linear so can’t simply use percentage to show the battery level. Below is the battery performance.
923 [[image:image-20220515075034-1.png||height="208" width="644"]]
924 )))
925
926 (((
927 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
928
929 )))
930
931 == 5.2 Replace Battery ==
932
933 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.
934
935 [[image:image-20220515075440-2.png||height="338" width="272"]][[image:image-20220515075625-3.png||height="193" width="257"]]
936
937 == 5.3 Battery Life Analyze ==
938
939 (((
940 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:
941 https:~/~/www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf
942 )))
943
944 = 6. Order Info =
945
946 (((
947 Part Number: (% style="color:#4f81bd" %)** LHT65N-XX**
948 )))
949
950 (((
951 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
952 )))
953
954 * (((
955 (% style="color:#4f81bd" %)** AS923**(%%): LoRaWAN AS923 band
956 )))
957 * (((
958 (% style="color:#4f81bd" %)** AU915**(%%): LoRaWAN AU915 band
959 )))
960 * (((
961 (% style="color:#4f81bd" %)** EU433**(%%): LoRaWAN EU433 band
962 )))
963 * (((
964 (% style="color:#4f81bd" %)** EU868**(%%): LoRaWAN EU868 band
965 )))
966 * (((
967 (% style="color:#4f81bd" %)** KR920**(%%): LoRaWAN KR920 band
968 )))
969 * (((
970 (% style="color:#4f81bd" %)** US915**(%%): LoRaWAN US915 band
971 )))
972 * (((
973 (% style="color:#4f81bd" %)** IN865**(%%): LoRaWAN IN865 band
974 )))
975 * (((
976 (% style="color:#4f81bd" %)** CN470**(%%): LoRaWAN CN470 band
977 )))
978
979 (((
980 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
981 )))
982
983 * (((
984 (% style="color:#4f81bd" %)**E3**(%%): External Temperature Probe
985 )))
986
987 = 7. Packing Info =
988
989 (((
990 **Package Includes**:
991 )))
992
993 * (((
994 LHT65N Temperature & Humidity Sensor x 1
995 )))
996 * (((
997 Program cable x 1
998 )))
999 * (((
1000 Optional external sensor
1001 )))
1002
1003 (((
1004 **Dimension and weight**:
1005 )))
1006
1007 * (((
1008 Device Size:  13.5 x 7 x 3 cm
1009 )))
1010 * (((
1011 Device Weight: 105g
1012 )))
1013 * (((
1014 Package Size / pcs : 14.5 x 8 x 5 cm
1015 )))
1016 * (((
1017 Weight / pcs : 170g
1018 )))
1019
1020 = 8. FCC Warning =
1021
1022 (((
1023 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
1024 )))
1025
1026 (((
1027 (1) This device may not cause harmful interference;
1028 )))
1029
1030 (((
1031 (2) this device must accept any interference received, including interference that may cause undesired operation.
1032 )))
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