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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
10 **Table of Contents：**
11
12 {{toc/}}
13
14
15
16
17 = 1.Introduction =
18
19 == 1.1 What is LHT65N Temperature & Humidity Sensor ==
20
21 (((
22 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**(%%)**.**
23 )))
24
25 (((
26 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.
27 )))
28
29 (((
30 LHT65N has a built-in 2400mAh non-chargeable battery which can be used for up to 10 years*.
31 )))
32
33 (((
34 LHT65N is full compatible with LoRaWAN v1.0.3 Class A protocol, it can work with a standard LoRaWAN gateway.
35 )))
36
37 (((
38 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.
39 )))
40
41 (((
42 *The actual battery life depends on how often to send data, please see the battery analyzer chapter.
43 )))
44
45 == 1.2 Features ==
46
47 * Wall mountable
48 * LoRaWAN v1.0.3 Class A protocol
49 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915
50 * AT Commands to change parameters
51 * Remote configure parameters via LoRaWAN Downlink
52 * Firmware upgradeable via program port
53 * Built-in 2400mAh battery for up to 10 years of use.
54 * Built-in Temperature & Humidity sensor
55 * Optional External Sensors
56 * Tri-color LED to indicate working status
57 * Datalog feature
58
59 == 1.3 Specification ==
60
61 (((
62 **Built-in Temperature Sensor:**
63 )))
64
65 * (((
66 Resolution: 0.01 °C
67 )))
68 * (((
69 Accuracy Tolerance : Typ ±0.3 °C
70 )))
71 * (((
72 Long Term Drift: < 0.02 °C/yr
73 )))
74 * (((
75 Operating Range: -40 ~~ 85 °C
76 )))
77
78 (((
79 **Built-in Humidity Sensor:**
80 )))
81
82 * (((
83 Resolution: 0.04 %RH
84 )))
85 * (((
86 Accuracy Tolerance : Typ ±3 %RH
87 )))
88 * (((
89 Long Term Drift: < 0.02 °C/yr
90 )))
91 * (((
92 Operating Range: 0 ~~ 96 %RH
93 )))
94
95 (((
96 **External Temperature Sensor:**
97 )))
98
99 * (((
100 Resolution: 0.0625 °C
101 )))
102 * (((
103 ±0.5°C accuracy from -10°C to +85°C
104 )))
105 * (((
106 ±2°C accuracy from -55°C to +125°C
107 )))
108 * (((
109 Operating Range: -55 °C ~~ 125 °C
110 )))
111
112 = 2. Connect LHT65N to IoT Server =
113
114 == 2.1 How does LHT65N work? ==
115
116 (((
117 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.
118 )))
119
120 (((
121 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.
122 )))
123
124 == 2.2 How to Activate LHT65N? ==
125
126 The LHT65N has two working modes:
127
128 * **Deep Sleep Mode**: LHT65N doesn’t have any LoRaWAN activation. This mode is used for storage and shipping to save battery life.
129 * **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. 
130
131 (((
132 The LHT65N is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
133 )))
134
135 [[image:image-20220515123819-1.png||height="379" width="317"]]
136
137 [[image:image-20220523153201-19.png||height="180" width="818"]]
138
139 == 2.3 Example to join LoRaWAN network ==
140
141 (% class="wikigeneratedid" %)
142 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.
143
144 (% class="wikigeneratedid" %)
145 [[image:image-20220522232442-1.png||height="387" width="648"]]
146
147 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:
148
149
150 === 2.3.1 Step 1: Create Device n TTN ===
151
152 Create a device in TTN V3 with the OTAA keys from LHT65N.
153
154 Each LHT65N is shipped with a sticker with its device EUI, APP Key and APP EUI as below:
155
156 [[image:image-20220522232812-2.png||height="219" width="279"]]
157
158 User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:
159
160 Add APP EUI in the application.
161
162 [[image:image-20220522232916-3.png]]
163
164 [[image:image-20220522232932-4.png]]
165
166 [[image:image-20220522232954-5.png]]
167
168 Note: LHT65N use same payload as LHT65.
169
170 [[image:image-20220522233026-6.png]]
171
172
173 Input APP EUI,  APP KEY and DEV EUI:
174
175 [[image:image-20220522233118-7.png]]
176
177
178 === 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
179
180 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.
181
182 [[image:image-20220522233300-8.png||height="219" width="722"]]
183
184
185 == 2.4 Uplink Payload ==
186
187 The uplink payload includes totally 11 bytes. Uplink packets use FPORT=2 and (% style="color:#4f81bd" %)**every 20 minutes**(%%) send one uplink by default.
188
189 After each uplink, the (% style="color:blue" %)**BLUE LED**(%%) will blink once.
190
191 (% border="1" style="background-color:#ffffcc; color:green; width:426px" %)
192 |(% style="width:97px" %)(((
193 **Size(bytes)**
194 )))|(% style="width:39px" %)(((
195 **2**
196 )))|(% style="width:100px" %)(((
197 **2**
198 )))|(% style="width:77px" %)(((
199 **2**
200 )))|(% style="width:47px" %)(((
201 **1**
202 )))|(% style="width:51px" %)(((
203 **4**
204 )))
205 |(% style="width:97px" %)(((
206 **Value**
207 )))|(% style="width:39px" %)(((
208 [[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]]
209 )))|(% style="width:100px" %)(((
210 (((
211 [[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]]
212 )))
213 )))|(% style="width:77px" %)(((
214 (((
215 [[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]]
216 )))
217
218 (((
219 [[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]]
220 )))
221 )))|(% style="width:47px" %)(((
222 [[Ext>>path:http://8.211.40.43:8080/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.5Ext23]] #
223 )))|(% style="width:51px" %)(((
224 [[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]]
225 )))
226
227 * The First 6 bytes: has fix meanings for every LHT65N.
228 * The 7th byte (EXT #): defines the external sensor model.
229 * 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.)
230
231 === 2.4.1 Decoder in TTN V3 ===
232
233 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.
234
235 Below is the position to put the decoder and LHT65N decoder can be download from here:
236
237 [[https:~~/~~/www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0 >>https://www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0]]
238
239 [[image:image-20220522234118-10.png||height="353" width="729"]]
240
241 === 2.4.2 BAT-Battery Info ===
242
243 These two bytes of BAT include the battery state and the actually voltage
244
245 [[image:image-20220523152839-18.png]]
246
247 [[image:image-20220522235639-1.png||height="139" width="727"]]
248
249 Check the battery voltage for LHT65N.
250
251 * BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
252 * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
253
254 === 2.4.3 Built-in Temperature ===
255
256 [[image:image-20220522235639-2.png||height="138" width="722"]]
257
258 * Temperature:  0x0ABB/100=27.47℃
259
260 [[image:image-20220522235639-3.png]]
261
262 * Temperature:  (0xF5C6-65536)/100=-26.18℃
263
264 === 2.4.4 Built-in Humidity ===
265
266 [[image:image-20220522235639-4.png||height="138" width="722"]]
267
268 * Humidity:    0x025C/10=60.4%
269
270 === 2.4.5 Ext # ===
271
272 Bytes for External Sensor:
273
274 [[image:image-20220523152822-17.png]]
275
276 === 2.4.6 Ext value ===
277
278 ==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
279
280 [[image:image-20220522235639-5.png]]
281
282 * DS18B20 temp=0x0ADD/100=27.81℃
283
284 The last 2 bytes of data are meaningless
285
286 [[image:image-20220522235639-6.png]]
287
288 * External temperature= (0xF54F-65536)/100=-27.37℃
289
290 (((
291 The last 2 bytes of data are meaningless
292 )))
293
294 (((
295 If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
296 )))
297
298
299 ==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
300
301 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:
302
303 (% border="1" style="background-color:#ffffcc; color:green; width:510px" %)
304 |(% style="width:96px" %)(((
305 **Size(bytes)**
306 )))|(% style="width:71px" %)(((
307 **2**
308 )))|(% style="width:99px" %)(((
309 **2**
310 )))|(% style="width:132px" %)(((
311 **2**
312 )))|(% style="width:54px" %)(((
313 **1**
314 )))|(% style="width:64px" %)(((
315 **4**
316 )))
317 |(% style="width:96px" %)(((
318 **Value**
319 )))|(% style="width:71px" %)(((
320 [[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]]
321 )))|(% style="width:99px" %)(((
322 (((
323 [[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]]
324 )))
325
326 (((
327 [[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]]
328 )))
329 )))|(% style="width:132px" %)(((
330 (((
331 BAT Status &
332 )))
333
334 (((
335 [[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]]
336 )))
337 )))|(% style="width:54px" %)(((
338 Status & Ext
339 )))|(% style="width:64px" %)(((
340 (((
341 [[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]]
342 )))
343 )))
344
345 * **Battery status & (% class="wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink" %)Built-in Humidity(%%)**
346
347 (% border="1" style="background-color:#ffffcc; color:green; width:469px" %)
348 |(% style="width:65px" %)Bit(bit)|(% style="width:267px" %)[15:14]|(% style="width:134px" %)[11:0]
349 |(% style="width:65px" %)Value|(% style="width:267px" %)(((
350 BAT Status
351
352 00(b): Ultra Low ( BAT <= 2.50v)
353
354 01(b): Low  (2.50v <=BAT <= 2.55v)
355
356 10(b): OK   (2.55v <= BAT <=2.65v)
357
358 11(b): Good   (BAT >= 2.65v)
359 )))|(% style="width:134px" %)(((
360 [[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]]
361
362
363 )))
364
365 * **Status & Ext Byte**
366
367 [[image:image-20220523152434-16.png]]
368
369 * Poll Message Flag: 1: This message is a poll message reply, 0: means this is a normal uplink.
370 * 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.
371 * 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)
372
373 == 2.5 Show data on Datacake ==
374
375 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:
376
377 (((
378 **Step 1**: Be sure that your device is programmed and properly connected to the LoRaWAN network.
379 )))
380
381 (((
382 **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.
383 )))
384
385 (((
386 Add Datacake:
387 )))
388
389 [[image:image-20220523000825-7.png||height="262" width="583"]]
390
391
392 Select default key as Access Key:
393
394 [[image:image-20220523000825-8.png||height="453" width="406"]]
395
396 In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/]]) , add LHT65 device.
397
398 [[image:image-20220523000825-9.png||height="366" width="392"]]
399
400 [[image:image-20220523000825-10.png||height="413" width="728"]]
401
402 == 2.6 Datalog Feature ==
403
404 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.
405
406 === 2.6.1 Unix TimeStamp ===
407
408 LHT65N uses Unix TimeStamp format based on
409
410 [[image:image-20220523001219-11.png||height="97" width="627"]]
411
412
413 (((
414 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :
415 )))
416
417 (((
418 Below is the converter example
419 )))
420
421 [[image:image-20220523001219-12.png||height="298" width="720"]]
422
423 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
424
425 === 2.6.2 Set Device Time ===
426
427 (((
428 There are two ways to set device’s time:
429 )))
430
431 (((
432 **~1. Through LoRaWAN MAC Command (Default settings)**
433 )))
434
435 (((
436 User need to set SYNCMOD=1 to enable sync time via MAC command.
437 )))
438
439 (((
440 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).
441 )))
442
443 (((
444 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.
445 )))
446
447 (((
448
449 )))
450
451 (((
452 **2. Manually Set Time**
453 )))
454
455 (((
456 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
457 )))
458
459 === 2.6.3 Poll sensor value ===
460
461 User can poll sensor value based on timestamps from the server. Below is the downlink command.
462
463 [[image:image-20220523152302-15.png]]
464
465 (((
466 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.
467 )))
468
469 (((
470 For example, downlink command (% style="display:none" %) (%%)**31 5FC5F350 5FC6 0160 05**
471 )))
472
473 (((
474 Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00’s data
475 )))
476
477 (((
478 Uplink Internal =5s，means LHT65N will send one packet every 5s. range 5~~255s.
479 )))
480
481
482 === 2.6.4 Datalog Uplink payload ===
483
484 The Datalog poll reply uplink will use below payload format.
485
486 (((
487 **Retrieval data payload**
488 )))
489
490 (% border="1" style="background-color:#ffffcc; color:green; width:510px" %)
491 |(% style="width:93px" %)(((
492 (((
493 **Size(bytes)**
494 )))
495 )))|(% style="width:71px" %)(((
496 (((
497 **2**
498 )))
499 )))|(% style="width:102px" %)(((
500 (((
501 **2**
502 )))
503 )))|(% style="width:86px" %)(((
504 (((
505 **2**
506 )))
507 )))|(% style="width:86px" %)(((
508 (((
509 **1**
510 )))
511 )))|(% style="width:48px" %)(((
512 (((
513 **4**
514 )))
515 )))
516 |(% style="width:93px" %)(((
517 (((
518 **Value**
519 )))
520 )))|(% style="width:71px" %)(((
521 (((
522 [[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]]
523 )))
524 )))|(% style="width:102px" %)(((
525 (((
526 (((
527 [[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]]
528 )))
529 )))
530
531 (((
532 (((
533 [[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]]
534 )))
535 )))
536 )))|(% style="width:86px" %)(((
537 (((
538 (((
539 [[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]]
540 )))
541 )))
542
543 (((
544 (((
545 [[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]]
546 )))
547 )))
548 )))|(% style="width:86px" %)(((
549 (((
550 [[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]]
551 )))
552 )))|(% style="width:48px" %)(((
553 (((
554 (((
555 [[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]]
556 )))
557 )))
558
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 (((
631 If user sends below downlink command: (% style="background-color:yellow" %)3160065F9760066DA705
632 )))
633
634 (((
635 Where : Start time: 60065F97 = time 21/1/19 04:27:03
636 )))
637
638 (((
639 Stop time 60066DA7= time 21/1/19 05:27:03
640 )))
641
642 (((
643
644 )))
645
646 (((
647 LHT65N will uplink this payload.
648 )))
649
650 [[image:image-20220523001219-13.png||height="421" width="727"]]
651
652 7FFF089801464160065F977FFF088E014B41600660097FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
653
654 Where the first 11 bytes is for the first entry:
655
656 7FFF089801464160065F97
657
658 Ext sensor data=0x7FFF/100=327.67
659
660 Temp=0x0898/100=22.00
661
662 Hum=0x0146/10=32.6
663
664 poll message flag & Ext=0x41,means reply data,Ext=1
665
666 Unix time is 0x60065F97=1611030423s=21/1/19 04:27:03
667
668 == 2.7 Alarm Mode ==
669
670 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.
671
672 (((
673 (% 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.
674 )))
675
676 (((
677 **AT Commands for Alarm mode:**
678 )))
679
680 (% class="box infomessage" %)
681 (((
682 (((
683 **AT+WMOD=1**: Enable/Disable Alarm Mode. (0:Disable, 1: Enable)
684 )))
685 )))
686
687 (% class="box infomessage" %)
688 (((
689 (((
690 **AT+CITEMP=1**: The interval to check the temperature for Alarm. (Unit: minute)
691 )))
692 )))
693
694 == 2.8 LED Indicator ==
695
696 (((
697 The LHT65N has a triple color LED which for easy shows different stage.
698 )))
699
700 (((
701 While pressing ACT button, the LED will work as per LED status with ACT button.
702 )))
703
704 (((
705 In a normal working state:
706 )))
707
708 * (((
709 For each uplink, the BLUE LED or RED LED will blink once.
710 )))
711 * (((
712 BLUE LED when an external sensor is connected
713 )))
714 * (((
715 RED LED when an external sensor is not connected
716 )))
717 * (((
718 For each success downlink, the PURPLE LED will blink once
719 )))
720
721 ----
722
723 == 2.9 Installation ==
724
725 [[image:image-20220516231650-1.png||height="436" width="428"]]
726
727 = 3. Sensors & Accessories =
728
729 == 3.1 E3 Temperature Probe ==
730
731 [[image:image-20220515080154-4.png||height="182" width="161"]] [[image:image-20220515080330-5.png||height="201" width="195"]]
732
733
734 With Temperature sensor with 2 meters cable long
735
736 * Resolution: 0.0625 °C
737 * ±0.5°C accuracy from -10°C to +85°C
738 * ±2°C accuracy from -55°C to +125°C
739 * Operating Range: -40 ~~ 125 °C
740 * -55°C to 125°C
741 * Working voltage 2.35v ~~ 5v
742
743 = 4. Configure LHT65N via AT Command or LoRaWAN Downlink =
744
745 (((
746 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
747 )))
748
749 * (((
750 AT Command Connection: See [[FAQ>>path:#AT_COMMAND]].
751 )))
752 * (((
753 LoRaWAN Downlink instruction for different platforms:
754 )))
755
756 (((
757 [[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]]
758 )))
759
760 (((
761 There are two kinds of commands to configure LHT65N, they are:
762 )))
763
764 (((
765 (% style="color:#4f81bd" %)* **General Commands**.
766 )))
767
768 (((
769 These commands are to configure:
770 )))
771
772 * (((
773 General system settings like: uplink interval.
774 )))
775 * (((
776 LoRaWAN protocol & radio-related commands.
777 )))
778
779 (((
780 They are the same for all Dragino Devices which supports DLWS-005 LoRaWAN Stack(Note~*~*). These commands can be found on the wiki:
781 )))
782
783 (((
784 [[http:~~/~~/wiki.dragino.com/index.php?title=End_Device_Downlink_Command>>url:http://wiki.dragino.com/index.php?title=End_Device_Downlink_Command]]
785 )))
786
787 (((
788 (% style="color:#4f81bd" %)* **Commands special design for LHT65N**
789 )))
790
791 (((
792 These commands are only valid for LHT65N, as below:
793 )))
794
795 == 4.1 Set Transmit Interval Time ==
796
797 Feature: Change LoRaWAN End Node Transmit Interval.
798
799 **AT Command: AT+TDC**
800
801 [[image:image-20220523150701-2.png]]
802
803 (((
804 **Downlink Command: 0x01**
805 )))
806
807 (((
808 Format: Command Code (0x01) followed by 3 bytes time value.
809 )))
810
811 (((
812 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
813 )))
814
815 * (((
816 **Example 1**: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
817 )))
818 * (((
819 **Example 2**: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
820 )))
821
822 == 4.2 Set External Sensor Mode ==
823
824 Feature: Change External Sensor Mode.
825
826 **AT Command: AT+EXT**
827
828 [[image:image-20220523150759-3.png]]
829
830 (((
831 **Downlink Command: 0xA2**
832 )))
833
834 (((
835 Total bytes: 2 ~~ 5 bytes
836 )))
837
838 (((
839 **Example:**
840 )))
841
842 * (((
843 0xA201: Set external sensor type to E1
844 )))
845 * (((
846 0xA209: Same as AT+EXT=9
847 )))
848 * (((
849 0xA20702003c,Same as AT+SETCNT=60
850 )))
851
852 == 4.3 Enable/Disable uplink Temperature probe ID ==
853
854 Feature: If PID is enabled, device will send the temperature probe ID on:
855
856 * First Packet after OTAA Join
857 * Every 24 hours since the first packet.
858
859 PID is default set to disable (0)
860
861 **AT Command:**
862
863 [[image:image-20220523150928-4.png]]
864
865 **Downlink Command:**
866
867 * 0xA800  **~-~->** AT+PID=0
868 * 0xA801     **~-~->** AT+PID=1
869
870 == 4.4 Set Password ==
871
872 Feature: Set device password, max 9 digits
873
874 **AT Command: AT+PWORD**
875
876 [[image:image-20220523151052-5.png]]
877
878 (((
879 **Downlink Command:**
880 )))
881
882 (((
883 No downlink command for this feature.
884 )))
885
886 == 4.5 Quit AT Command ==
887
888 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
889
890 **AT Command: AT+DISAT**
891
892 [[image:image-20220523151132-6.png]]
893
894 **Downlink Command:**
895
896 No downlink command for this feature.
897
898 == 4.6 Set to sleep mode ==
899
900 Feature: Set device to sleep mode
901
902 **AT Command: AT+SLEEP**
903
904 [[image:image-20220523151218-7.png]]
905
906 **Downlink Command:**
907
908 * There is no downlink command to set to Sleep mode.
909
910 == 4.7 Set system time ==
911
912 Feature: Set system time, unix format. [[See here for format detail.>>path:#TimeStamp]]
913
914 **AT Command:**
915
916 [[image:image-20220523151253-8.png]]
917
918 **Downlink Command:**
919
920 0x306007806000 ~/~/ Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
921
922 == 4.8 Set Time Sync Mode ==
923
924 (((
925 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
926 )))
927
928 (((
929 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.
930 )))
931
932 (((
933 **AT Command:**
934 )))
935
936 [[image:image-20220523151336-9.png]]
937
938 **Downlink Command:**
939
940 0x28 01 ~/~/ Same As AT+SYNCMOD=1
941
942 0x28 00 ~/~/ Same As AT+SYNCMOD=0
943
944 == 4.9 Set Time Sync Interval ==
945
946 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
947
948 **AT Command:**
949
950 [[image:image-20220523151411-10.png]]
951
952 **Downlink Command:**
953
954 0x29 0A ~/~/ Same as AT+SYNCTDC=0x0A
955
956 == 4.10 Print data entries base on page. ==
957
958 Feature: Print the sector data from start page to stop page (max is 416 pages).
959
960 **AT Command: AT+PDTA**
961
962 [[image:image-20220523151450-11.png]]
963
964 **Downlink Command:**
965
966 No downlink commands for feature
967
968 == 4.11 Print last few data entries. ==
969
970 Feature: Print the last few data entries
971
972 **AT Command: AT+PLDTA**
973
974 [[image:image-20220523151524-12.png]]
975
976 **Downlink Command:**
977
978 No downlink commands for feature
979
980 == 4.12 Clear Flash Record ==
981
982 Feature: Clear flash storage for data log feature.
983
984 **AT Command: AT+CLRDTA**
985
986 [[image:image-20220523151556-13.png]]
987
988 **Downlink Command: 0xA3**
989
990 * Example: 0xA301 ~/~/Same as AT+CLRDTA
991
992 = 5. Battery & How to replace =
993
994 == 5.1 Battery Type ==
995
996 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.
997
998 (((
999 The discharge curve is not linear so can’t simply use percentage to show the battery level. Below is the battery performance.
1000 [[image:image-20220515075034-1.png||height="208" width="644"]]
1001 )))
1002
1003 (((
1004 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1005
1006 )))
1007
1008 == 5.2 Replace Battery ==
1009
1010 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.
1011
1012 [[image:image-20220515075440-2.png||height="338" width="272"]][[image:image-20220515075625-3.png||height="193" width="257"]]
1013
1014 == 5.3 Battery Life Analyze ==
1015
1016 (((
1017 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:
1018 https:~/~/www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf
1019 )))
1020
1021 = 6. Order Info =
1022
1023 (((
1024 Part Number: (% style="color:#4f81bd" %)** LHT65N-XX-YY**
1025 )))
1026
1027 (((
1028 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
1029 )))
1030
1031 * (((
1032 (% style="color:#4f81bd" %)** AS923**(%%): LoRaWAN AS923 band
1033 )))
1034 * (((
1035 (% style="color:#4f81bd" %)** AU915**(%%): LoRaWAN AU915 band
1036 )))
1037 * (((
1038 (% style="color:#4f81bd" %)** EU433**(%%): LoRaWAN EU433 band
1039 )))
1040 * (((
1041 (% style="color:#4f81bd" %)** EU868**(%%): LoRaWAN EU868 band
1042 )))
1043 * (((
1044 (% style="color:#4f81bd" %)** KR920**(%%): LoRaWAN KR920 band
1045 )))
1046 * (((
1047 (% style="color:#4f81bd" %)** US915**(%%): LoRaWAN US915 band
1048 )))
1049 * (((
1050 (% style="color:#4f81bd" %)** IN865**(%%): LoRaWAN IN865 band
1051 )))
1052 * (((
1053 (% style="color:#4f81bd" %)** CN470**(%%): LoRaWAN CN470 band
1054 )))
1055
1056 (((
1057 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
1058 )))
1059
1060 * (((
1061 (% style="color:#4f81bd" %)**E3**(%%): External Temperature Probe
1062 )))
1063
1064 = 7. Packing Info =
1065
1066 (((
1067 **Package Includes**:
1068 )))
1069
1070 * (((
1071 LHT65N Temperature & Humidity Sensor x 1
1072 )))
1073 * (((
1074 Program cable x 1
1075 )))
1076 * (((
1077 Optional external sensor
1078 )))
1079
1080 (((
1081 **Dimension and weight**:
1082 )))
1083
1084 * (((
1085 Device Size:  13.5 x 7 x 3 cm
1086 )))
1087 * (((
1088 Device Weight: 105g
1089 )))
1090 * (((
1091 Package Size / pcs : 14.5 x 8 x 5 cm
1092 )))
1093 * (((
1094 Weight / pcs : 170g
1095 )))
1096
1097 = 8. FCC Warning =
1098
1099 (((
1100 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
1101 )))
1102
1103 (((
1104 (1) This device may not cause harmful interference；
1105 )))
1106
1107 (((
1108 (2) this device must accept any interference received, including interference that may cause undesired operation.
1109 )))