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Summary

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Content
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1 1  (% style="text-align:center" %)
2 -[[image:image-20220523115324-1.jpeg||height="500" width="500"]]
2 +[[image:image-20220523111447-1.jpeg||height="448" width="448"]]
3 3  
4 +{{box cssClass="floatinginfobox" title="**Contents**"}}
5 +{{toc/}}
6 +{{/box}}
4 4  
5 -**LHT65N LoRaWAN Temperature & Humidity Sensor Manual**
6 -
7 -
8 -
9 -**Table of Contents：**
10 -
11 11  {{toc/}}
12 12  
13 -
14 -
15 15  = 1.Introduction =
16 16  
17 17  == 1.1 What is LHT65N Temperature & Humidity Sensor ==
18 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 22  
23 -(((
15 +The Dragino LHT65N Temperature & Humidity sensor is a Long Range LoRaWAN Sensor. It includes a(% class="mark" %) **built-in Temperature & Humidity sensor**(%%) and has an external sensor connector to connect to an external (% class="mark" %)**Temperature Sensor**(%%)**.**
16 +
24 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 26  
27 -(((
28 28  LHT65N has a built-in 2400mAh non-chargeable battery which can be used for up to 10 years*.
29 -)))
30 30  
31 -(((
32 32  LHT65N is full compatible with LoRaWAN v1.0.3 Class A protocol, it can work with a standard LoRaWAN gateway.
33 -)))
34 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 -)))
23 +LHT65N supports (% class="mark" %)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.
38 38  
39 -(((
40 40  *The actual battery life depends on how often to send data, please see the battery analyzer chapter.
41 -)))
42 42  
43 43  == 1.2 Features ==
44 44  
... ... @@ -56,69 +56,36 @@
56 56  
57 57  == 1.3 Specification ==
58 58  
59 -(((
60 60  **Built-in Temperature Sensor:**
61 -)))
62 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 -)))
45 +* Resolution: 0.01 °C
46 +* Accuracy Tolerance : Typ ±0.3 °C
47 +* Long Term Drift: < 0.02 °C/yr
48 +* Operating Range: -40 ~~ 85 °C
75 75  
76 -(((
77 77  **Built-in Humidity Sensor:**
78 -)))
79 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 -)))
52 +* Resolution: 0.04 %RH
53 +* Accuracy Tolerance : Typ ±3 %RH
54 +* Long Term Drift: < 0.02 °C/yr
55 +* Operating Range: 0 ~~ 96 %RH
92 92  
93 -(((
94 94  **External Temperature Sensor:**
95 -)))
96 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 -)))
59 +* Resolution: 0.0625 °C
60 +* ±0.5°C accuracy from -10°C to +85°C
61 +* ±2°C accuracy from -55°C to +125°C
62 +* Operating Range: -55 °C ~~ 125 °C
109 109  
110 110  = 2. Connect LHT65N to IoT Server =
111 111  
112 112  == 2.1 How does LHT65N work? ==
113 113  
114 -(((
115 115  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 -)))
117 117  
118 -(((
119 119  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 -)))
121 121  
72 +
122 122  == 2.2 How to Activate LHT65N? ==
123 123  
124 124  The LHT65N has two working modes:
... ... @@ -207,7 +207,7 @@
207 207  * The 7th byte (EXT #): defines the external sensor model.
208 208  * 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.)
209 209  
210 -=== 2.4.1 Decoder in TTN V3 ===
161 +=== Decoder in TTN V3 ===
211 211  
212 212  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.
213 213  
... ... @@ -218,7 +218,7 @@
218 218  [[image:image-20220522234118-10.png]]
219 219  
220 220  
221 -=== 2.4.2 BAT-Battery Info ===
172 +=== BAT-Battery Info ===
222 222  
223 223  These two bytes of BAT include the battery state and the actually voltage
224 224  
... ... @@ -243,7 +243,7 @@
243 243  * BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
244 244  * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
245 245  
246 -=== 2.4.3 Built-in Temperature ===
197 +=== Built-in Temperature ===
247 247  
248 248  [[image:image-20220522235639-2.png]]
249 249  
... ... @@ -253,13 +253,13 @@
253 253  
254 254  * Temperature:  (0xF5C6-65536)/100=-26.18℃
255 255  
256 -=== 2.4.4 Built-in Humidity ===
207 +=== Built-in Humidity ===
257 257  
258 258  [[image:image-20220522235639-4.png]]
259 259  
260 260  * Humidity:    0x025C/10=60.4%
261 261  
262 -=== 2.4.5 Ext # ===
213 +=== Ext # ===
263 263  
264 264  Bytes for External Sensor:
265 265  
... ... @@ -268,16 +268,19 @@
268 268  |(% style="width:139px" %)0x01|(% style="width:484px" %)Sensor E3, Temperature Sensor
269 269  |(% style="width:139px" %)0x09|(% style="width:484px" %)Sensor E3, Temperature Sensor, Datalog Mod
270 270  
271 -=== 2.4.6 Ext value ===
222 +=== Ext value ===
272 272  
273 -==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
224 +==== Ext~=1, E3 Temperature Sensor ====
274 274  
275 275  [[image:image-20220522235639-5.png]]
276 276  
228 +
277 277  * DS18B20 temp=0x0ADD/100=27.81℃
278 278  
279 279  The last 2 bytes of data are meaningless
280 280  
233 +
234 +
281 281  [[image:image-20220522235639-6.png]]
282 282  
283 283  * External temperature= (0xF54F-65536)/100=-27.37℃
... ... @@ -284,15 +284,16 @@
284 284  
285 285  The last 2 bytes of data are meaningless
286 286  
241 +
287 287  If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
288 288  
289 289  
290 -==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
245 +==== Ext~=9, E3 sensor with Unix Timestamp ====
291 291  
292 292  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:
293 293  
294 294  
295 -(% border="1" style="width:697px" %)
250 +(% style="width:697px" %)
296 296  |(% 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**
297 297  |(% style="width:96px" %)**Value**|(% style="width:164px" %)[[External temperature>>path:#DS18b20_value]]|(% style="width:104px" %)(((
298 298  [[Built-In>>path:#SHT20_Temperature]]
... ... @@ -310,9 +310,9 @@
310 310  [[Time Stamp>>path:#Unix_Time_Stamp]]
311 311  )))
312 312  
313 -* **Battery status & **[[(% class="wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink" %)**Built-in Humidity**>>path:#SHT20_Humidity]]
268 +* **Battery status & **[[(% class="wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink" %)**Built-in Humidity**>>path:#SHT20_Humidity]]
314 314  
315 -(% border="1" style="width:587px" %)
270 +(% style="width:587px" %)
316 316  |Bit(bit)|(% style="width:280px" %)[15:14]|(% style="width:136px" %)[11:0]
317 317  |Value|(% style="width:280px" %)(((
318 318  BAT Status
... ... @@ -332,7 +332,7 @@
332 332  
333 333  * **Status & Ext Byte**
334 334  
335 -(% border="1" style="width:732px" %)
290 +(% style="width:732px" %)
336 336  |(% 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]**
337 337  |(% 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" %)(((
338 338  Ext:
... ... @@ -344,10 +344,11 @@
344 344  * 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.
345 345  * 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)
346 346  
347 -== 2.5 Show data on Datacake ==
302 +== Show data on Datacake ==
348 348  
349 349  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:
350 350  
306 +
351 351  **Step 1**: Be sure that your device is programmed and properly connected to the LoRaWAN network.
352 352  
353 353  **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.
... ... @@ -372,11 +372,11 @@
372 372  [[image:image-20220523000825-10.png||height="432" width="762"]]
373 373  
374 374  
375 -== 2.6 Datalog Feature ==
331 +== Datalog Feature ==
376 376  
377 377  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.
378 378  
379 -=== 2.6.1 Unix TimeStamp ===
335 +=== Unix TimeStamp ===
380 380  
381 381  LHT65N uses Unix TimeStamp format based on
382 382  
... ... @@ -387,12 +387,12 @@
387 387  
388 388  Below is the converter example
389 389  
390 -[[image:image-20220523001219-12.png||height="302" width="730"]]
346 +[[image:image-20220523001219-12.png||height="353" width="853"]]
391 391  
392 392  So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
393 393  
394 394  
395 -=== 2.6.2 Set Device Time ===
351 +=== Set Device Time ===
396 396  
397 397  There are two ways to set device’s time:
398 398  
... ... @@ -410,12 +410,12 @@
410 410  User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
411 411  
412 412  
413 -=== 2.6.3 Poll sensor value ===
369 +=== Poll sensor value ===
414 414  
415 415  User can poll sensor value based on timestamps from the server. Below is the downlink command.
416 416  
417 417  
418 -(% border="1" style="width:454px" %)
374 +(% style="width:454px" %)
419 419  |(% style="width:69px" %)1byte|(% style="width:129px" %)4bytes|(% style="width:134px" %)4bytes|(% style="width:119px" %)1byte
420 420  |(% style="width:69px" %)31|(% style="width:129px" %)Timestamp start|(% style="width:134px" %)Timestamp end|(% style="width:119px" %)Uplink Interval
421 421  
... ... @@ -429,7 +429,7 @@
429 429  Uplink Internal =5s，means LHT65N will send one packet every 5s. range 5~~255s.
430 430  
431 431  
432 -=== 2.6.4 Datalog Uplink payload ===
388 +=== Datalog Uplink payload ===
433 433  
434 434  The Datalog poll reply uplink will use below payload format.
435 435  
... ... @@ -436,7 +436,6 @@
436 436  
437 437  Retrieval data payload
438 438  
439 -(% border="1" %)
440 440  |**Size(bytes)**|**2**|**2**|**2**|**1**|**4**
441 441  |**Value**|[[External sensor data>>path:#Extension_sensor_value]]|(((
442 442  [[Built-In>>path:#SHT20_Temperature]]
... ... @@ -455,7 +455,6 @@
455 455  Poll message flag & Ext
456 456  
457 457  
458 -(% border="1" %)
459 459  |**Bits**|**7**|**6**|**5**|**4**|**[3:0]**
460 460  |**Status & Ext**|Not Defined|Poll Message Flag|Sync time OK|Unix Time Request|(((
461 461  Ext:
... ... @@ -515,7 +515,7 @@
515 515  
516 516  LHT65N will uplink this payload.
517 517  
518 -[[image:image-20220523001219-13.png||height="421" width="727"]]
472 +[[image:image-20220523001219-13.png]]
519 519  
520 520  7FFF089801464160065F977FFF088E014B41600660097FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
521 521  
... ... @@ -534,7 +534,7 @@
534 534  Unix time is 0x60065F97=1611030423s=21/1/19 04:27:03
535 535  
536 536  
537 -== 2.7 Alarm Mode ==
491 +== Alarm Mode ==
538 538  
539 539  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.
540 540  
... ... @@ -550,7 +550,7 @@
550 550  
551 551  
552 552  
553 -== 2.8 LED Indicator ==
507 +== LED Indicator ==
554 554  
555 555  The LHT65N has a triple color LED which for easy shows different stage.
556 556  
... ... @@ -565,14 +565,17 @@
565 565  
566 566  ----
567 567  
568 -== 2.9 Installation ==
522 +== Installation ==
569 569  
570 570  [[image:image-20220516231650-1.png||height="436" width="428"]]
571 571  
572 -= 3. Sensors & Accessories =
573 573  
574 -== 3.1 E3 Temperature Probe ==
575 575  
528 +
529 += Sensors & Accessories =
530 +
531 +== E3 Temperature Probe ==
532 +
576 576  [[image:image-20220515080154-4.png||height="182" width="161"]] [[image:image-20220515080330-5.png||height="201" width="195"]]
577 577  
578 578  
... ... @@ -585,7 +585,7 @@
585 585  * -55°C to 125°C
586 586  * Working voltage 2.35v ~~ 5v
587 587  
588 -= 4. Configure LHT65N via AT Command or LoRaWAN Downlink =
545 += Configure LHT65N via AT Command or LoRaWAN Downlink =
589 589  
590 590  Use can configure LHT65N via AT Command or LoRaWAN Downlink.
591 591  
... ... @@ -594,6 +594,7 @@
594 594  
595 595  [[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]]
596 596  
554 +
597 597  There are two kinds of commands to configure LHT65N, they are:
598 598  
599 599  * **General Commands**.
... ... @@ -607,17 +607,19 @@
607 607  
608 608  [[http:~~/~~/wiki.dragino.com/index.php?title=End_Device_Downlink_Command>>url:http://wiki.dragino.com/index.php?title=End_Device_Downlink_Command]]
609 609  
568 +
569 +
610 610  * **Commands special design for LHT65N**
611 611  
612 612  These commands are only valid for LHT65N, as below:
613 613  
614 -== 4.1 Set Transmit Interval Time ==
615 615  
575 +== Set Transmit Interval Time ==
576 +
616 616  Feature: Change LoRaWAN End Node Transmit Interval.
617 617  
618 618  **AT Command: AT+TDC**
619 619  
620 -(% border="1" %)
621 621  |**Command Example**|**Function**|**Response**
622 622  |AT+TDC?|Show current transmit Interval|(((
623 623  30000
... ... @@ -641,13 +641,12 @@
641 641  * Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
642 642  * Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
643 643  
644 -== 4.2 Set External Sensor Mode ==
604 +== Set External Sensor Mode ==
645 645  
646 646  Feature: Change External Sensor Mode.
647 647  
648 648  **AT Command: AT+EXT**
649 649  
650 -(% border="1" %)
651 651  |**Command Example**|**Function**|**Response**
652 652  |AT+EXT?|Get current external sensor mode|(((
653 653  1
... ... @@ -669,7 +669,7 @@
669 669  * 0xA209: Same as AT+EXT=9
670 670  * 0xA20702003c,Same as AT+SETCNT=60
671 671  
672 -== 4.3 Enable/Disable uplink Temperature probe ID ==
631 +== Enable/Disable uplink Temperature probe ID ==
673 673  
674 674  Feature: If PID is enabled, device will send the temperature probe ID on:
675 675  
... ... @@ -681,7 +681,6 @@
681 681  
682 682  **AT Command:**
683 683  
684 -(% border="1" %)
685 685  |**Command Example**|**Function**|**Response**
686 686  |AT+PID=1|Enable PID uplink|OK
687 687  
... ... @@ -690,13 +690,12 @@
690 690  * 0xA800     à AT+PID=0
691 691  * 0xA801     à AT+PID=1
692 692  
693 -== 4.4 Set Password ==
651 +== Set Password ==
694 694  
695 695  Feature: Set device password, max 9 digits
696 696  
697 697  **AT Command: AT+PWORD**
698 698  
699 -(% border="1" %)
700 700  |**Command Example**|**Function**|**Response**
701 701  |AT+PWORD=?|Show password|(((
702 702  123456
... ... @@ -710,13 +710,13 @@
710 710  
711 711  No downlink command for this feature.
712 712  
713 -== 4.5 Quit AT Command ==
714 714  
671 +== Quit AT Command ==
672 +
715 715  Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
716 716  
717 717  **AT Command: AT+DISAT**
718 718  
719 -(% border="1" %)
720 720  |**Command Example**|**Function**|**Response**
721 721  |AT+DISAT|Quit AT Commands mode|OK
722 722  
... ... @@ -725,13 +725,12 @@
725 725  No downlink command for this feature.
726 726  
727 727  
728 -== 4.6 Set to sleep mode ==
685 +== Set to sleep mode ==
729 729  
730 730  Feature: Set device to sleep mode
731 731  
732 732  **AT Command: AT+SLEEP**
733 733  
734 -(% border="1" %)
735 735  | | |
736 736  |**Command Example**|**Function**|**Response**
737 737  |AT+SLEEP|Set to sleep mode|(((
... ... @@ -744,13 +744,12 @@
744 744  
745 745  * There is no downlink command to set to Sleep mode.
746 746  
747 -== 4.7 Set system time ==
703 +== Set system time ==
748 748  
749 749  Feature: Set system time, unix format. [[See here for format detail.>>path:#TimeStamp]]
750 750  
751 751  **AT Command:**
752 752  
753 -(% border="1" %)
754 754  |**Command Example**|**Function**
755 755  |AT+TIMESTAMP=1611104352|(((
756 756  OK
... ... @@ -762,10 +762,12 @@
762 762  
763 763  0x306007806000 ~/~/ Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
764 764  
765 -== 4.8 Set Time Sync Mode ==
766 766  
721 +== Set Time Sync Mode ==
722 +
767 767  Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
768 768  
725 +
769 769  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.
770 770  
771 771  
... ... @@ -780,13 +780,13 @@
780 780  
781 781  0x28 00 ~/~/ Same As AT+SYNCMOD=0
782 782  
783 -== 4.9 Set Time Sync Interval ==
784 784  
741 +== Set Time Sync Interval ==
742 +
785 785  Feature: Define System time sync interval. SYNCTDC default value: 10 days.
786 786  
787 787  **AT Command:**
788 788  
789 -(% border="1" %)
790 790  |**Command Example**|**Function**
791 791  |AT+SYNCTDC=0x0A|Set SYNCTDC to 10 (0x0A), so the sync time is 10 days.
792 792  
... ... @@ -794,13 +794,13 @@
794 794  
795 795  0x29 0A ~/~/ Same as AT+SYNCTDC=0x0A
796 796  
797 -== 4.10 Print data entries base on page. ==
798 798  
755 +== Print data entries base on page. ==
756 +
799 799  Feature: Print the sector data from start page to stop page (max is 416 pages).
800 800  
801 801  **AT Command: AT+PDTA**
802 802  
803 -(% border="1" %)
804 804  |**Command Example**|**Response**
805 805  |(((
806 806  AT+PDTA=1,3
... ... @@ -849,13 +849,14 @@
849 849  
850 850  No downlink commands for feature
851 851  
852 -== 4.11 Print last few data entries. ==
853 853  
810 +
811 +== Print last few data entries. ==
812 +
854 854  Feature: Print the last few data entries
855 855  
856 856  **AT Command: AT+PLDTA**
857 857  
858 -(% border="1" %)
859 859  |**Command Example**|**Response**
860 860  |(((
861 861  AT+PLDTA=5
... ... @@ -885,13 +885,14 @@
885 885  
886 886  No downlink commands for feature
887 887  
888 -== 4.12 Clear Flash Record ==
889 889  
847 +
848 +== Clear Flash Record ==
849 +
890 890  Feature: Clear flash storage for data log feature.
891 891  
892 892  **AT Command: AT+CLRDTA**
893 893  
894 -(% border="1" %)
895 895  |**Command Example**|**Function**|**Response**
896 896  |AT+CLRDTA|Clear date record|(((
897 897  Clear all stored sensor data…
... ... @@ -903,31 +903,35 @@
903 903  
904 904  * Example: 0xA301 ~/~/Same as AT+CLRDTA
905 905  
906 -= 5. Battery & How to replace =
907 907  
908 -== 5.1 Battery Type ==
866 += Battery & How to replace =
909 909  
868 +== Battery Type ==
869 +
910 910  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.
911 911  
912 912  The discharge curve is not linear so can’t simply use percentage to show the battery level. Below is the battery performance.
913 913  [[image:image-20220515075034-1.png||height="208" width="644"]]
914 914  
875 +
915 915  The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
916 916  
917 917  
918 -== 5.2 Replace Battery ==
879 +== Replace Battery ==
919 919  
920 920  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.
921 921  
922 922  [[image:image-20220515075440-2.png||height="338" width="272"]][[image:image-20220515075625-3.png||height="193" width="257"]]
923 923  
924 -== 5.3 Battery Life Analyze ==
925 925  
886 +== Battery Life Analyze ==
887 +
926 926  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:
927 927  https:~/~/www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf
928 928  
929 -= 6. Order Info =
930 930  
892 += Order Info =
893 +
931 931  Part Number: (% class="mark" %)**LHT65N-XX**
932 932  
933 933  **XX**: The default frequency band
... ... @@ -945,7 +945,7 @@
945 945  
946 946  * **E3**: External Temperature Probe
947 947  
948 -= 7. Packing Info =
911 += Packing Info =
949 949  
950 950  **Package Includes**:
951 951  
... ... @@ -960,10 +960,10 @@
960 960  * Package Size / pcs : 14.5 x 8 x 5 cm
961 961  * Weight / pcs : 170g
962 962  
963 -= 8. FCC Warning =
926 += FCC Warning =
964 964  
965 965  This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
966 966  
967 -(1) This device may not cause harmful interference；
930 +(1) This device may not cause harmful interference, and
968 968  
969 -(2) this device must accept any interference received, including interference that may cause undesired operation.
932 +(2) this device must accept any interference received, including interference that may cause undesired operation
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