Last modified by Mengting Qiu on 2024/04/30 14:27
<
From version < 57.6 >
edited by Xiaoling
on 2022/05/23 14:04
To version < 99.5 >
edited by Xiaoling
on 2022/05/25 11:28
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Summary

Details

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Content
... ... @@ -1,5 +1,5 @@
1 1  (% style="text-align:center" %)
2 -[[image:image-20220523115324-1.jpeg||height="500" width="500"]]
2 +[[image:image-20220523115324-1.jpeg||height="317" width="317"]]
3 3  
4 4  
5 5  **LHT65N LoRaWAN Temperature & Humidity Sensor Manual**
... ... @@ -6,6 +6,7 @@
6 6  
7 7  
8 8  
9 +
9 9  **Table of Contents：**
10 10  
11 11  {{toc/}}
... ... @@ -12,8 +12,9 @@
12 12  
13 13  
14 14  
15 -= 1.Introduction =
16 16  
17 += 1. Introduction =
18 +
17 17  == 1.1 What is LHT65N Temperature & Humidity Sensor ==
18 18  
19 19  (((
... ... @@ -132,11 +132,7 @@
132 132  
133 133  [[image:image-20220515123819-1.png||height="379" width="317"]]
134 134  
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.
137 +[[image:image-20220525110604-2.png]]
140 140  
141 141  == 2.3 Example to join LoRaWAN network ==
142 142  
... ... @@ -190,14 +190,41 @@
190 190  
191 191  After each uplink, the (% style="color:blue" %)**BLUE LED**(%%) will blink once.
192 192  
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>>||anchor="H2.4.2BAT-BatteryInfo"]]
209 +)))|(% style="width:100px" %)(((
210 +(((
211 +[[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
212 +)))
213 +)))|(% style="width:77px" %)(((
214 +(((
215 +[[Built-in>>||anchor="H2.4.4Built-inHumidity"]]
216 +)))
193 193  
194 -(% border="1" style="background-color:#ffffcc; color:green; width:605px" %)
195 -|(% style="width:106px" %)**Size(bytes)**|(% style="width:71px" %)**2**|(% style="width:183px" %)**2**|(% style="width:155.172px" %)**2**|(% style="width:49px" %)**1**|(% style="width:92px" %)**4**
196 -|(% style="width:106px" %)**Value**|(% style="width:71px" %)[[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]]|(% style="width:183px" %)(((
197 -[[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]]
198 -)))|(% style="width:155.172px" %)(((
199 -[[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]]
200 -)))|(% style="width:49px" %)[[Ext>>path:#Extension_Sensor]] #|(% style="width:92px" %)[[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]]
218 +(((
219 +[[Humidity>>||anchor="H2.4.4Built-inHumidity"]]
220 +)))
221 +)))|(% style="width:47px" %)(((
222 +[[Ext>>||anchor="H2.4.5Ext23"]] #
223 +)))|(% style="width:51px" %)(((
224 +[[Ext value>>||anchor="H2.4.6Extvalue"]]
225 +)))
201 201  
202 202  * The First 6 bytes: has fix meanings for every LHT65N.
203 203  * The 7th byte (EXT #): defines the external sensor model.
... ... @@ -217,20 +217,8 @@
217 217  
218 218  These two bytes of BAT include the battery state and the actually voltage
219 219  
220 -(% border="1" style="background-color:#ffffcc; color:green; width:508px" %)
221 -|(% style="width:75px" %)Bit(bit)|(% style="width:268px" %)[15:14]|(% style="width:162px" %)[13:0]
222 -|(% style="width:75px" %)Value|(% style="width:268px" %)(((
223 -BAT Status
245 +[[image:image-20220523152839-18.png]]
224 224  
225 -00(b): Ultra Low ( BAT <= 2.50v)
226 -
227 -01(b): Low  (2.50v <=BAT <= 2.55v)
228 -
229 -10(b): OK   (2.55v <= BAT <=2.65v)
230 -
231 -11(b): Good   (BAT >= 2.65v)
232 -)))|(% style="width:162px" %)Actually BAT voltage
233 -
234 234  [[image:image-20220522235639-1.png||height="139" width="727"]]
235 235  
236 236  Check the battery voltage for LHT65N.
... ... @@ -258,10 +258,7 @@
258 258  
259 259  Bytes for External Sensor:
260 260  
261 -(% border="1" style="background-color:#ffffcc; color:green; width:473px" %)
262 -|(% style="width:139px" %)**EXT # Value**|(% style="width:331px" %)**External Sensor Type**
263 -|(% style="width:139px" %)0x01|(% style="width:331px" %)Sensor E3, Temperature Sensor
264 -|(% style="width:139px" %)0x09|(% style="width:331px" %)Sensor E3, Temperature Sensor, Datalog Mod
274 +[[image:image-20220523152822-17.png]]
265 265  
266 266  === 2.4.6 Ext value ===
267 267  
... ... @@ -290,29 +290,53 @@
290 290  
291 291  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:
292 292  
293 -(% border="1" style="background-color:#ffffcc; color:green; width:697px" %)
294 -|(% style="width:96px" %)**Size(bytes)**|(% style="width:164px" %)**2**|(% style="width:104px" %)**2**|(% style="width:106px" %)**2**|(% style="width:108px" %)**1**|(% style="width:116px" %)**4**
295 -|(% style="width:96px" %)**Value**|(% style="width:164px" %)[[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]]|(% style="width:104px" %)(((
296 -[[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]]
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>>||anchor="H4.2SetExternalSensorMode"]]
321 +)))|(% style="width:99px" %)(((
322 +(((
323 +[[Built-In>>||anchor="H2.4.3Built-inTemperature"]]
324 +)))
297 297  
298 -[[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]]
299 -)))|(% style="width:106px" %)(((
326 +(((
327 +[[Temperature>>||anchor="H2.4.3Built-inTemperature"]]
328 +)))
329 +)))|(% style="width:132px" %)(((
330 +(((
300 300  BAT Status &
332 +)))
301 301  
302 -[[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/#H2.4.4Built-inHumidity]]
303 -
304 -[[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]]
305 -)))|(% style="width:108px" %)Status & Ext|(% style="width:116px" %)(((
306 -[[Unix>>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]]
307 -
308 -[[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]]
334 +(((
335 +[[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
309 309  )))
337 +)))|(% style="width:54px" %)(((
338 +Status & Ext
339 +)))|(% style="width:64px" %)(((
340 +(((
341 +[[Unix Time Stamp>>||anchor="H4.1SetTransmitIntervalTime"]]
342 +)))
343 +)))
310 310  
311 311  * **Battery status & (% class="wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink" %)Built-in Humidity(%%)**
312 312  
313 -(% border="1" style="background-color:#ffffcc; color:green; width:587px" %)
314 -|Bit(bit)|(% style="width:280px" %)[15:14]|(% style="width:136px" %)[11:0]
315 -|Value|(% style="width:280px" %)(((
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" %)(((
316 316  BAT Status
317 317  
318 318  00(b): Ultra Low ( BAT <= 2.50v)
... ... @@ -322,7 +322,7 @@
322 322  10(b): OK   (2.55v <= BAT <=2.65v)
323 323  
324 324  11(b): Good   (BAT >= 2.65v)
325 -)))|(% style="width:136px" %)(((
359 +)))|(% style="width:134px" %)(((
326 326  [[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]]
327 327  
328 328  
... ... @@ -330,11 +330,7 @@
330 330  
331 331  * **Status & Ext Byte**
332 332  
333 -(% border="1" style="background-color:#ffffcc; color:green; width:732px" %)
334 -|(% style="width:128px" %)**Bits**|(% style="width:102px" %)**7**|(% style="width:145px" %)**6**|(% style="width:117px" %)**5**|(% style="width:147px" %)**4**|(% style="width:90px" %)**[3:0]**
335 -|(% style="width:128px" %)**Status & Ext**|(% style="width:102px" %)Not Defined|(% style="width:145px" %)Poll Message Flag|(% style="width:117px" %)Sync time OK|(% style="width:147px" %)Unix Time Request|(% style="width:90px" %)(((
336 -Ext:0b(1001)
337 -)))
367 +[[image:image-20220523152434-16.png]]
338 338  
339 339  * Poll Message Flag: 1: This message is a poll message reply, 0: means this is a normal uplink.
340 340  * 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.
... ... @@ -367,14 +367,21 @@
367 367  
368 368  [[image:image-20220523000825-9.png||height="366" width="392"]]
369 369  
370 -[[image:image-20220523000825-10.png||height="432" width="762"]]
400 +[[image:image-20220523000825-10.png||height="413" width="728"]]
371 371  
372 372  == 2.6 Datalog Feature ==
373 373  
374 -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.
404 +Datalog Feature is to ensure IoT Server can get all sampling data from Sensor even if the LoRaWAN network is down. For each sampling, LHT65N will store the reading for future retrieving purposes. There are two ways for IoT servers to get datalog from LHT65N.
375 375  
376 -=== 2.6.1 Unix TimeStamp ===
406 +=== 2.6.1 Ways to get datalog via LoRaWAN ===
377 377  
408 +There are two methods:
409 +
410 +1. IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specify time range.
411 +1. Set [[PNACKMD=1>>||anchor="H4.13AutoSendNone-ACKmessages"]], LHT65N will wait for ACK for every uplink, when there is no LoRaWAN network, LHT65N will store the sensor data, and it will send all messages after network recover.
412 +
413 +=== 2.6.2 Unix TimeStamp ===
414 +
378 378  LHT65N uses Unix TimeStamp format based on
379 379  
380 380  [[image:image-20220523001219-11.png||height="97" width="627"]]
... ... @@ -388,98 +388,207 @@
388 388  Below is the converter example
389 389  )))
390 390  
391 -[[image:image-20220523001219-12.png||height="302" width="730"]]
428 +[[image:image-20220523001219-12.png||height="298" width="720"]]
392 392  
393 393  So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
394 394  
432 +=== 2.6.3 Set Device Time ===
395 395  
396 -=== 2.6.2 Set Device Time ===
397 -
434 +(((
398 398  There are two ways to set device’s time:
436 +)))
399 399  
438 +(((
400 400  **~1. Through LoRaWAN MAC Command (Default settings)**
440 +)))
401 401  
442 +(((
402 402  User need to set SYNCMOD=1 to enable sync time via MAC command.
444 +)))
403 403  
446 +(((
404 404  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).
448 +)))
405 405  
450 +(((
406 406  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.
452 +)))
407 407  
454 +(((
455 +
456 +)))
408 408  
458 +(((
409 409  **2. Manually Set Time**
460 +)))
410 410  
462 +(((
411 411  User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
464 +)))
412 412  
466 +=== 2.6.4 Poll sensor value ===
413 413  
414 -=== 2.6.3 Poll sensor value ===
415 -
416 416  User can poll sensor value based on timestamps from the server. Below is the downlink command.
417 417  
470 +[[image:image-20220523152302-15.png]]
418 418  
419 -(% border="1" style="width:454px" %)
420 -|(% style="width:69px" %)1byte|(% style="width:129px" %)4bytes|(% style="width:134px" %)4bytes|(% style="width:119px" %)1byte
421 -|(% style="width:69px" %)31|(% style="width:129px" %)Timestamp start|(% style="width:134px" %)Timestamp end|(% style="width:119px" %)Uplink Interval
422 -
472 +(((
423 423  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.
474 +)))
424 424  
476 +(((
477 +For example, downlink command (% style="display:none" %) (%%)**31 5FC5F350 5FC6 0160 05**
478 +)))
425 425  
426 -For example, downlink command 31 5FC5F350 5FC6 0160 05
427 -
480 +(((
428 428  Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00’s data
482 +)))
429 429  
484 +(((
430 430  Uplink Internal =5s，means LHT65N will send one packet every 5s. range 5~~255s.
486 +)))
431 431  
432 432  
433 -=== 2.6.4 Datalog Uplink payload ===
489 +=== 2.6.5 Datalog Uplink payload ===
434 434  
435 435  The Datalog poll reply uplink will use below payload format.
436 436  
493 +(((
494 +**Retrieval data payload**
495 +)))
437 437  
438 -Retrieval data payload
497 +(% border="1" style="background-color:#ffffcc; color:green; width:510px" %)
498 +|(% style="width:93px" %)(((
499 +(((
500 +**Size(bytes)**
501 +)))
502 +)))|(% style="width:71px" %)(((
503 +(((
504 +**2**
505 +)))
506 +)))|(% style="width:102px" %)(((
507 +(((
508 +**2**
509 +)))
510 +)))|(% style="width:86px" %)(((
511 +(((
512 +**2**
513 +)))
514 +)))|(% style="width:86px" %)(((
515 +(((
516 +**1**
517 +)))
518 +)))|(% style="width:48px" %)(((
519 +(((
520 +**4**
521 +)))
522 +)))
523 +|(% style="width:93px" %)(((
524 +(((
525 +**Value**
526 +)))
527 +)))|(% style="width:71px" %)(((
528 +(((
529 +[[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]]
530 +)))
531 +)))|(% style="width:102px" %)(((
532 +(((
533 +(((
534 +[[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]]
535 +)))
536 +)))
439 439  
440 -(% border="1" %)
441 -|**Size(bytes)**|**2**|**2**|**2**|**1**|**4**
442 -|**Value**|[[External sensor data>>path:#Extension_sensor_value]]|(((
443 -[[Built-In>>path:#SHT20_Temperature]]
538 +(((
539 +(((
540 +[[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]]
541 +)))
542 +)))
543 +)))|(% style="width:86px" %)(((
544 +(((
545 +(((
546 +[[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]]
547 +)))
548 +)))
444 444  
445 -[[Temperature>>path:#SHT20_Temperature]]
446 -)))|(((
447 -[[Built-in>>path:#SHT20_Humidity]]
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 +)))
555 +)))|(% style="width:86px" %)(((
556 +(((
557 +[[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]]
558 +)))
559 +)))|(% style="width:48px" %)(((
560 +(((
561 +(((
562 +[[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]]
563 +)))
564 +)))
448 448  
449 -[[Humidity>>path:#SHT20_Humidity]]
450 -)))|[[Poll message flag & Ext>>path:#Poll_EXT]]|(((
451 -[[Unix Time Stamp>>path:#Unix_Time_Stamp]]
452 -
566 +(((
567 +(((
453 453  
454 454  )))
570 +)))
571 +)))
455 455  
456 -Poll message flag & Ext
573 +**Poll message flag & Ext**
457 457  
575 +[[image:image-20220523152208-14.png]]
458 458  
459 -(% border="1" %)
460 -|**Bits**|**7**|**6**|**5**|**4**|**[3:0]**
461 -|**Status & Ext**|Not Defined|Poll Message Flag|Sync time OK|Unix Time Request|(((
462 -Ext:
577 +(((
578 +(((
579 +Poll Message Flag: 1: This message is a poll message reply.
580 +)))
581 +)))
463 463  
464 -0b(1001)
583 +* (((
584 +(((
585 +Poll Message Flag is set to 1.
465 465  )))
587 +)))
588 +* (((
589 +(((
590 +Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
591 +)))
592 +)))
466 466  
467 -Poll Message Flag: 1: This message is a poll message reply.
468 -
469 -* Poll Message Flag is set to 1.
470 -* Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
471 -
594 +(((
595 +(((
472 472  For example, in US915 band, the max payload for different DR is:
597 +)))
598 +)))
473 473  
474 -a)      DR0: max is 11 bytes so one entry of data
600 +(((
601 +(((
602 +a) DR0: max is 11 bytes so one entry of data
603 +)))
604 +)))
475 475  
476 -b)      DR1: max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
606 +(((
607 +(((
608 +b) DR1: max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
609 +)))
610 +)))
477 477  
478 -c)      DR2: total payload includes 11 entries of data
612 +(((
613 +(((
614 +c) DR2: total payload includes 11 entries of data
615 +)))
616 +)))
479 479  
480 -d)      DR3: total payload includes 22 entries of data.
618 +(((
619 +(((
620 +d) DR3: total payload includes 22 entries of data.
621 +)))
622 +)))
481 481  
624 +(((
625 +(((
482 482  If devise doesn’t have any data in the polling time. Device will uplink 11 bytes of 0   
627 +)))
628 +)))
483 483  
484 484  
485 485  **Example:**
... ... @@ -486,35 +486,27 @@
486 486  
487 487  If LHT65N has below data inside Flash:
488 488  
489 -Flash Addr   |Unix Time | Ext | BAT voltage|  Value                  
635 +[[image:image-20220523144455-1.png||height="335" width="735"]]
490 490  
491 -80196E0 21/1/19 04:27:03 1 3145 sht_temp=22.00 sht_hum=32.6 ds_temp=327.67
637 +(((
638 +If user sends below downlink command: (% style="background-color:yellow" %)3160065F9760066DA705
639 +)))
492 492  
493 -80196F0 21/1/19 04:28:57 1 3145 sht_temp=21.90 sht_hum=33.1 ds_temp=327.67
494 -
495 -8019700 21/1/19 04:30:30 1 3145 sht_temp=21.81 sht_hum=33.4 ds_temp=327.67
496 -
497 -8019710 21/1/19 04:40:30 1 3145 sht_temp=21.65 sht_hum=33.7 ds_temp=327.67
498 -
499 -8019720 21/1/19 04:50:30 1 3147 sht_temp=21.55 sht_hum=34.1 ds_temp=327.67
500 -
501 -8019730 21/1/19 05:00:30 1 3149 sht_temp=21.50 sht_hum=34.1 ds_temp=327.67
502 -
503 -8019740 21/1/19 05:10:30 1 3149 sht_temp=21.43 sht_hum=34.6 ds_temp=327.67
504 -
505 -8019750 21/1/19 05:20:30 1 3151 sht_temp=21.35 sht_hum=34.9 ds_temp=327.67
506 -
507 -
508 -If user sends below downlink command:
509 -
510 -3160065F9760066DA705
511 -
641 +(((
512 512   Where : Start time: 60065F97 = time 21/1/19 04:27:03
643 +)))
513 513  
645 +(((
514 514   Stop time 60066DA7= time 21/1/19 05:27:03
647 +)))
515 515  
649 +(((
650 +
651 +)))
516 516  
653 +(((
517 517  LHT65N will uplink this payload.
655 +)))
518 518  
519 519  [[image:image-20220523001219-13.png||height="421" width="727"]]
520 520  
... ... @@ -534,35 +534,58 @@
534 534  
535 535  Unix time is 0x60065F97=1611030423s=21/1/19 04:27:03
536 536  
537 -
538 538  == 2.7 Alarm Mode ==
539 539  
540 540  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.
541 541  
679 +(((
680 +(% 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.
681 +)))
542 542  
543 -Note: Alarm mode will increase a little big the power consumption, we recommend extending the normal reading time when enabling this feature.
683 +(((
684 +**AT Commands for Alarm mode:**
685 +)))
544 544  
545 -
546 -AT Commands for Alarm mode:
547 -
687 +(% class="box infomessage" %)
688 +(((
689 +(((
548 548  **AT+WMOD=1**: Enable/Disable Alarm Mode. (0:Disable, 1: Enable)
691 +)))
692 +)))
549 549  
694 +(% class="box infomessage" %)
695 +(((
696 +(((
550 550  **AT+CITEMP=1**: The interval to check the temperature for Alarm. (Unit: minute)
698 +)))
699 +)))
551 551  
552 -
553 -
554 554  == 2.8 LED Indicator ==
555 555  
703 +(((
556 556  The LHT65N has a triple color LED which for easy shows different stage.
705 +)))
557 557  
707 +(((
558 558  While pressing ACT button, the LED will work as per LED status with ACT button.
709 +)))
559 559  
711 +(((
560 560  In a normal working state:
713 +)))
561 561  
562 -* For each uplink, the BLUE LED or RED LED will blink once.
563 -* BLUE LED when an external sensor is connected
564 -* RED LED when an external sensor is not connected
565 -* For each success downlink, the PURPLE LED will blink once
715 +* (((
716 +For each uplink, the BLUE LED or RED LED will blink once.
717 +)))
718 +* (((
719 +BLUE LED when an external sensor is connected
720 +)))
721 +* (((
722 +RED LED when an external sensor is not connected
723 +)))
724 +* (((
725 +For each success downlink, the PURPLE LED will blink once
726 +)))
566 566  
567 567  ----
568 568  
... ... @@ -588,29 +588,55 @@
588 588  
589 589  = 4. Configure LHT65N via AT Command or LoRaWAN Downlink =
590 590  
752 +(((
591 591  Use can configure LHT65N via AT Command or LoRaWAN Downlink.
754 +)))
592 592  
593 -* AT Command Connection: See [[FAQ>>path:#AT_COMMAND]].
594 -* LoRaWAN Downlink instruction for different platforms:
756 +* (((
757 +AT Command Connection: See [[FAQ>>path:#AT_COMMAND]].
758 +)))
759 +* (((
760 +LoRaWAN Downlink instruction for different platforms:
761 +)))
595 595  
763 +(((
596 596  [[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]]
765 +)))
597 597  
767 +(((
598 598  There are two kinds of commands to configure LHT65N, they are:
769 +)))
599 599  
600 -* **General Commands**.
771 +(((
772 +(% style="color:#4f81bd" %)* **General Commands**.
773 +)))
601 601  
775 +(((
602 602  These commands are to configure:
777 +)))
603 603  
604 -* General system settings like: uplink interval.
605 -* LoRaWAN protocol & radio-related commands.
779 +* (((
780 +General system settings like: uplink interval.
781 +)))
782 +* (((
783 +LoRaWAN protocol & radio-related commands.
784 +)))
606 606  
786 +(((
607 607  They are the same for all Dragino Devices which supports DLWS-005 LoRaWAN Stack(Note~*~*). These commands can be found on the wiki:
788 +)))
608 608  
790 +(((
609 609  [[http:~~/~~/wiki.dragino.com/index.php?title=End_Device_Downlink_Command>>url:http://wiki.dragino.com/index.php?title=End_Device_Downlink_Command]]
792 +)))
610 610  
611 -* **Commands special design for LHT65N**
794 +(((
795 +(% style="color:#4f81bd" %)* **Commands special design for LHT65N**
796 +)))
612 612  
798 +(((
613 613  These commands are only valid for LHT65N, as below:
800 +)))
614 614  
615 615  == 4.1 Set Transmit Interval Time ==
616 616  
... ... @@ -618,29 +618,26 @@
618 618  
619 619  **AT Command: AT+TDC**
620 620  
621 -(% border="1" %)
622 -|**Command Example**|**Function**|**Response**
623 -|AT+TDC?|Show current transmit Interval|(((
624 -30000
808 +[[image:image-20220523150701-2.png]]
625 625  
626 -OK
627 -
628 -the interval is 30000ms = 30s
810 +(((
811 +**Downlink Command: 0x01**
629 629  )))
630 -|AT+TDC=60000|Set Transmit Interval|(((
631 -OK
632 632  
633 -Set transmit interval to 60000ms = 60 seconds
814 +(((
815 +Format: Command Code (0x01) followed by 3 bytes time value.
634 634  )))
635 635  
636 -**Downlink Command: 0x01**
637 -
638 -Format: Command Code (0x01) followed by 3 bytes time value.
639 -
818 +(((
640 640  If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
820 +)))
641 641  
642 -* Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
643 -* Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
822 +* (((
823 +**Example 1**: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
824 +)))
825 +* (((
826 +**Example 2**: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
827 +)))
644 644  
645 645  == 4.2 Set External Sensor Mode ==
646 646  
... ... @@ -648,27 +648,29 @@
648 648  
649 649  **AT Command: AT+EXT**
650 650  
651 -(% border="1" %)
652 -|**Command Example**|**Function**|**Response**
653 -|AT+EXT?|Get current external sensor mode|(((
654 -1
835 +[[image:image-20220523150759-3.png]]
655 655  
656 -OK
657 -
658 -External Sensor mode =1
837 +(((
838 +**Downlink Command: 0xA2**
659 659  )))
660 -|AT+EXT=1|(% colspan="2" %)Set external sensor mode to 1
661 -|AT+EXT=9|(% colspan="2" %)Set to external DS18B20 with timestamp
662 662  
663 -**Downlink Command: 0xA2**
664 -
841 +(((
665 665  Total bytes: 2 ~~ 5 bytes
843 +)))
666 666  
667 -Example:
845 +(((
846 +**Example:**
847 +)))
668 668  
669 -* 0xA201: Set external sensor type to E1
670 -* 0xA209: Same as AT+EXT=9
671 -* 0xA20702003c,Same as AT+SETCNT=60
849 +* (((
850 +0xA201: Set external sensor type to E1
851 +)))
852 +* (((
853 +0xA209: Same as AT+EXT=9
854 +)))
855 +* (((
856 +0xA20702003c,Same as AT+SETCNT=60
857 +)))
672 672  
673 673  == 4.3 Enable/Disable uplink Temperature probe ID ==
674 674  
... ... @@ -679,17 +679,14 @@
679 679  
680 680  PID is default set to disable (0)
681 681  
682 -
683 683  **AT Command:**
684 684  
685 -(% border="1" %)
686 -|**Command Example**|**Function**|**Response**
687 -|AT+PID=1|Enable PID uplink|OK
870 +[[image:image-20220523150928-4.png]]
688 688  
689 689  **Downlink Command:**
690 690  
691 -* 0xA800     à AT+PID=0
692 -* 0xA801     à AT+PID=1
874 +* 0xA800  **~-~->** AT+PID=0
875 +* 0xA801     **~-~->** AT+PID=1
693 693  
694 694  == 4.4 Set Password ==
695 695  
... ... @@ -697,19 +697,15 @@
697 697  
698 698  **AT Command: AT+PWORD**
699 699  
700 -(% border="1" %)
701 -|**Command Example**|**Function**|**Response**
702 -|AT+PWORD=?|Show password|(((
703 -123456
883 +[[image:image-20220523151052-5.png]]
704 704  
705 -
706 -OK
885 +(((
886 +**Downlink Command:**
707 707  )))
708 -|AT+PWORD=999999|Set password|OK
709 709  
710 -**Downlink Command:**
711 -
889 +(((
712 712  No downlink command for this feature.
891 +)))
713 713  
714 714  == 4.5 Quit AT Command ==
715 715  
... ... @@ -717,15 +717,12 @@
717 717  
718 718  **AT Command: AT+DISAT**
719 719  
720 -(% border="1" %)
721 -|**Command Example**|**Function**|**Response**
722 -|AT+DISAT|Quit AT Commands mode|OK
899 +[[image:image-20220523151132-6.png]]
723 723  
724 724  **Downlink Command:**
725 725  
726 726  No downlink command for this feature.
727 727  
728 -
729 729  == 4.6 Set to sleep mode ==
730 730  
731 731  Feature: Set device to sleep mode
... ... @@ -732,15 +732,8 @@
732 732  
733 733  **AT Command: AT+SLEEP**
734 734  
735 -(% border="1" %)
736 -| | |
737 -|**Command Example**|**Function**|**Response**
738 -|AT+SLEEP|Set to sleep mode|(((
739 -Clear all stored sensor data…
911 +[[image:image-20220523151218-7.png]]
740 740  
741 -OK
742 -)))
743 -
744 744  **Downlink Command:**
745 745  
746 746  * There is no downlink command to set to Sleep mode.
... ... @@ -751,14 +751,8 @@
751 751  
752 752  **AT Command:**
753 753  
754 -(% border="1" %)
755 -|**Command Example**|**Function**
756 -|AT+TIMESTAMP=1611104352|(((
757 -OK
923 +[[image:image-20220523151253-8.png]]
758 758  
759 -Set System time to 2021-01-20 00:59:12
760 -)))
761 -
762 762  **Downlink Command:**
763 763  
764 764  0x306007806000 ~/~/ Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
... ... @@ -765,15 +765,19 @@
765 765  
766 766  == 4.8 Set Time Sync Mode ==
767 767  
931 +(((
768 768  Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
933 +)))
769 769  
935 +(((
770 770  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.
937 +)))
771 771  
772 -
939 +(((
773 773  **AT Command:**
941 +)))
774 774  
775 -|**Command Example**|**Function**
776 -|AT+SYNCMOD=1|Enable Sync system time via LoRaWAN MAC Command (DeviceTimeReq)
943 +[[image:image-20220523151336-9.png]]
777 777  
778 778  **Downlink Command:**
779 779  
... ... @@ -787,9 +787,7 @@
787 787  
788 788  **AT Command:**
789 789  
790 -(% border="1" %)
791 -|**Command Example**|**Function**
792 -|AT+SYNCTDC=0x0A|Set SYNCTDC to 10 (0x0A), so the sync time is 10 days.
957 +[[image:image-20220523151411-10.png]]
793 793  
794 794  **Downlink Command:**
795 795  
... ... @@ -801,51 +801,8 @@
801 801  
802 802  **AT Command: AT+PDTA**
803 803  
804 -(% border="1" %)
805 -|**Command Example**|**Response**
806 -|(((
807 -AT+PDTA=1,3
969 +[[image:image-20220523151450-11.png]]
808 808  
809 -
810 -
811 -Print page 1 to 3
812 -)))|(((
813 -8019500 19/6/26 16:48 1 2992 sht_temp=28.21 sht_hum=71.5 ds_temp=27.31
814 -
815 -8019510 19/6/26 16:53 1 2994 sht_temp=27.64 sht_hum=69.3 ds_temp=26.93
816 -
817 -8019520 19/6/26 16:58 1 2996 sht_temp=28.39 sht_hum=72.0 ds_temp=27.06
818 -
819 -8019530 19/6/26 17:03 1 2996 sht_temp=27.97 sht_hum=70.4 ds_temp=27.12
820 -
821 -8019540 19/6/26 17:08 1 2996 sht_temp=27.80 sht_hum=72.9 ds_temp=27.06
822 -
823 -8019550 19/6/26 17:13 1 2998 sht_temp=27.30 sht_hum=72.4 ds_temp=26.68
824 -
825 -8019560 19/6/26 17:22 1 2992 sht_temp=26.27 sht_hum=62.3 ds_temp=26.56
826 -
827 -8019570
828 -
829 -8019580
830 -
831 -8019590
832 -
833 -80195A0
834 -
835 -80195B0
836 -
837 -80195C0
838 -
839 -80195D0
840 -
841 -80195E0
842 -
843 -80195F0
844 -
845 -
846 -OK
847 -)))
848 -
849 849  **Downlink Command:**
850 850  
851 851  No downlink commands for feature
... ... @@ -856,54 +856,40 @@
856 856  
857 857  **AT Command: AT+PLDTA**
858 858  
859 -(% border="1" %)
860 -|**Command Example**|**Response**
861 -|(((
862 -AT+PLDTA=5
981 +[[image:image-20220523151524-12.png]]
863 863  
983 +**Downlink Command:**
864 864  
985 +No downlink commands for feature
865 865  
866 -Print last 5 entries
867 -)))|(((
868 -Stop Tx and RTP events when read sensor data
987 +== 4.12 Clear Flash Record ==
869 869  
870 -1 19/6/26 13:59 1 3005 sht_temp=27.09 sht_hum=79.5 ds_temp=26.75
989 +Feature: Clear flash storage for data log feature.
871 871  
872 -2 19/6/26 14:04 1 3007 sht_temp=26.65 sht_hum=74.8 ds_temp=26.43
991 +**AT Command: AT+CLRDTA**
873 873  
874 -3 19/6/26 14:09 1 3007 sht_temp=26.91 sht_hum=77.9 ds_temp=26.56
993 +[[image:image-20220523151556-13.png]]
875 875  
876 -4 19/6/26 14:15 1 3007 sht_temp=26.93 sht_hum=76.7 ds_temp=26.75
995 +**Downlink Command: 0xA3**
877 877  
878 -5 19/6/26 14:20 1 3007 sht_temp=26.78 sht_hum=76.6 ds_temp=26.43
997 +* Example: 0xA301 ~/~/Same as AT+CLRDTA
879 879  
880 -Start Tx and RTP events
999 +== 4.13 Auto Send None-ACK messages ==
881 881  
882 -OK
883 -)))
1001 +Feature: LHT65N will wait for ACK for each uplink, If LHT65N doesn't get ACK from the IoT server, it will consider the message doesn't arrive server and store it. LHT65N keeps sending messages in normal periodically. Once LHT65N gets ACK from a server, it will consider the network is ok and start to send the not-arrive message.
884 884  
885 -**Downlink Command:**
886 886  
887 -No downlink commands for feature
1004 +**AT Command: AT+PNACKMD**
888 888  
889 -== 4.12 Clear Flash Record ==
1006 +The default factory setting is 0
890 890  
891 -Feature: Clear flash storage for data log feature.
892 -
893 -**AT Command: AT+CLRDTA**
894 -
895 -(% border="1" %)
896 896  |**Command Example**|**Function**|**Response**
897 -|AT+CLRDTA|Clear date record|(((
898 -Clear all stored sensor data…
1009 +|AT+PNACKMD=1|Poll None-ACK message|OK
899 899  
900 -OK
901 -)))
1011 +**Downlink Command: 0x34**
902 902  
903 -**Downlink Command: 0xA3**
1013 +* Example: 0x3401 ~/~/Same as AT+PNACKMD=1
904 904  
905 -* Example: 0xA301 ~/~/Same as AT+CLRDTA
906 -
907 907  = 5. Battery & How to replace =
908 908  
909 909  == 5.1 Battery Type ==
... ... @@ -910,11 +910,15 @@
910 910  
911 911  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.
912 912  
1021 +(((
913 913  The discharge curve is not linear so can’t simply use percentage to show the battery level. Below is the battery performance.
914 914  [[image:image-20220515075034-1.png||height="208" width="644"]]
1024 +)))
915 915  
1026 +(((
916 916  The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
917 917  
1029 +)))
918 918  
919 919  == 5.2 Replace Battery ==
920 920  
... ... @@ -924,47 +924,97 @@
924 924  
925 925  == 5.3 Battery Life Analyze ==
926 926  
1039 +(((
927 927  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:
928 928  https:~/~/www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf
1042 +)))
929 929  
930 930  = 6. Order Info =
931 931  
932 -Part Number: (% class="mark" %)**LHT65N-XX**
1046 +(((
1047 +Part Number: (% style="color:#4f81bd" %)** LHT65N-XX-YY**
1048 +)))
933 933  
934 -**XX**: The default frequency band
1050 +(((
1051 +(% style="color:#4f81bd" %)**XX **(%%): The default frequency band
1052 +)))
935 935  
936 -* **AS923**: LoRaWAN AS923 band
937 -* **AU915**: LoRaWAN AU915 band
938 -* **EU433**: LoRaWAN EU433 band
939 -* **EU868**: LoRaWAN EU868 band
940 -* **KR920**: LoRaWAN KR920 band
941 -* **US915**: LoRaWAN US915 band
942 -* **IN865**: LoRaWAN IN865 band
943 -* **CN470**: LoRaWAN CN470 band
1054 +* (((
1055 +(% style="color:#4f81bd" %)** AS923**(%%): LoRaWAN AS923 band
1056 +)))
1057 +* (((
1058 +(% style="color:#4f81bd" %)** AU915**(%%): LoRaWAN AU915 band
1059 +)))
1060 +* (((
1061 +(% style="color:#4f81bd" %)** EU433**(%%): LoRaWAN EU433 band
1062 +)))
1063 +* (((
1064 +(% style="color:#4f81bd" %)** EU868**(%%): LoRaWAN EU868 band
1065 +)))
1066 +* (((
1067 +(% style="color:#4f81bd" %)** KR920**(%%): LoRaWAN KR920 band
1068 +)))
1069 +* (((
1070 +(% style="color:#4f81bd" %)** US915**(%%): LoRaWAN US915 band
1071 +)))
1072 +* (((
1073 +(% style="color:#4f81bd" %)** IN865**(%%): LoRaWAN IN865 band
1074 +)))
1075 +* (((
1076 +(% style="color:#4f81bd" %)** CN470**(%%): LoRaWAN CN470 band
1077 +)))
944 944  
945 -**YY**: Sensor Accessories
1079 +(((
1080 +(% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
1081 +)))
946 946  
947 -* **E3**: External Temperature Probe
1083 +* (((
1084 +(% style="color:#4f81bd" %)**E3**(%%): External Temperature Probe
1085 +)))
948 948  
949 949  = 7. Packing Info =
950 950  
1089 +(((
951 951  **Package Includes**:
1091 +)))
952 952  
953 -* LHT65N Temperature & Humidity Sensor x 1
954 -* Program cable x 1
955 -* Optional external sensor
1093 +* (((
1094 +LHT65N Temperature & Humidity Sensor x 1
1095 +)))
1096 +* (((
1097 +Program cable x 1
1098 +)))
1099 +* (((
1100 +Optional external sensor
1101 +)))
956 956  
1103 +(((
957 957  **Dimension and weight**:
1105 +)))
958 958  
959 -* Device Size:  13.5 x 7 x 3 cm
960 -* Device Weight: 105g
961 -* Package Size / pcs : 14.5 x 8 x 5 cm
962 -* Weight / pcs : 170g
1107 +* (((
1108 +Device Size:  13.5 x 7 x 3 cm
1109 +)))
1110 +* (((
1111 +Device Weight: 105g
1112 +)))
1113 +* (((
1114 +Package Size / pcs : 14.5 x 8 x 5 cm
1115 +)))
1116 +* (((
1117 +Weight / pcs : 170g
1118 +)))
963 963  
964 964  = 8. FCC Warning =
965 965  
1122 +(((
966 966  This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
1124 +)))
967 967  
1126 +(((
968 968  (1) This device may not cause harmful interference；
1128 +)))
969 969  
1130 +(((
970 970  (2) this device must accept any interference received, including interference that may cause undesired operation.
1132 +)))
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