Last modified by Mengting Qiu on 2024/04/30 14:27
<
From version < 51.1 >
edited by Edwin Chen
on 2022/05/23 00:18
To version < 55.4 >
edited by Xiaoling
on 2022/05/23 11:51
>
Change comment: There is no comment for this version

Summary

Details

Page properties
Author
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1 -XWiki.Edwin
1 +XWiki.Xiaoling
Content
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1 +(% style="text-align:center" %)
2 +[[image:image-20220523111447-1.jpeg||height="448" width="448"]]
3 +
1 1  {{box cssClass="floatinginfobox" title="**Contents**"}}
2 2  {{toc/}}
3 3  {{/box}}
4 4  
5 -= Overview =
8 +{{toc/}}
6 6  
7 -[[image:LHT65N_10.png||alt="LHT65_Image" height="265" width="265"]]
8 8  
9 9  
12 += 1.Introduction =
13 +
14 +== 1.1 What is LHT65N Temperature & Humidity Sensor ==
15 +
16 +
10 10  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**(%%)**.**
11 11  
12 12  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.
... ... @@ -19,9 +19,8 @@
19 19  
20 20  *The actual battery life depends on how often to send data, please see the battery analyzer chapter.
21 21  
29 +== 1.2 Features ==
22 22  
23 -== Features: ==
24 -
25 25  * Wall mountable
26 26  * LoRaWAN v1.0.3 Class A protocol
27 27  * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915
... ... @@ -34,7 +34,7 @@
34 34  * Tri-color LED to indicate working status
35 35  * Datalog feature
36 36  
37 -== Specification: ==
43 +== 1.3 Specification ==
38 38  
39 39  **Built-in Temperature Sensor:**
40 40  
... ... @@ -57,9 +57,9 @@
57 57  * ±2°C accuracy from -55°C to +125°C
58 58  * Operating Range: -55 °C ~~ 125 °C
59 59  
60 -= Connect LHT65N to IoT Server =
66 += 2. Connect LHT65N to IoT Server =
61 61  
62 -== How does LHT65N work? ==
68 +== 2.1 How does LHT65N work? ==
63 63  
64 64  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.
65 65  
... ... @@ -66,7 +66,7 @@
66 66  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.
67 67  
68 68  
69 -== How to Activate LHT65N? ==
75 +== 2.2 How to Activate LHT65N? ==
70 70  
71 71  The LHT65N has two working modes:
72 72  
... ... @@ -77,12 +77,13 @@
77 77  
78 78  [[image:image-20220515123819-1.png||height="379" width="317"]]
79 79  
86 +(% border="1" %)
80 80  |**Behavior on ACT**|**Function**|**Action**
81 81  |**Pressing ACT between 1s < time < 3s**|Test uplink status|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.
82 82  |**Pressing ACT for more than 3s**|Active Device|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.
83 83  |**Fast press ACT 5 times**|Deactivate Device|red led will solid on for 5 seconds. This means LHT65N is in Deep Sleep Mode.
84 84  
85 -== Example to join LoRaWAN network ==
92 +== 2.3 Example to join LoRaWAN network ==
86 86  
87 87  (% class="wikigeneratedid" %)
88 88  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.
... ... @@ -93,7 +93,7 @@
93 93  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:
94 94  
95 95  
96 -=== **Step 1**: Create Device n TTN ===
103 +=== 2.3.1 Step 1: Create Device n TTN ===
97 97  
98 98  Create a device in TTN V3 with the OTAA keys from LHT65N.
99 99  
... ... @@ -123,7 +123,7 @@
123 123  [[image:image-20220522233118-7.png]]
124 124  
125 125  
126 -=== Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
133 +=== 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
127 127  
128 128  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.
129 129  
... ... @@ -130,7 +130,7 @@
130 130  [[image:image-20220522233300-8.png]]
131 131  
132 132  
133 -== Uplink Payload: ==
140 +== 2.4 Uplink Payload ==
134 134  
135 135  The uplink payload includes totally 11 bytes. Uplink packets use FPORT=2 and(% class="mark" %) every 20 minutes(%%) send one uplink by default.
136 136  
... ... @@ -137,7 +137,7 @@
137 137  After each uplink, the (% class="mark" %)BLUE LED(%%) will blink once.
138 138  
139 139  
140 -(% style="width:572px" %)
147 +(% border="1" style="width:572px" %)
141 141  |(% style="width:106px" %)**Size(bytes)**|(% style="width:71px" %)**2**|(% style="width:128px" %)**2**|(% style="width:103px" %)**2**|(% style="width:72px" %)**1**|(% style="width:89px" %)**4**
142 142  |(% style="width:106px" %)**Value**|(% style="width:71px" %)[[BAT>>path:#Battery]]|(% style="width:128px" %)(((
143 143  [[Built-In>>path:#SHT20_Temperature]]
... ... @@ -153,7 +153,7 @@
153 153  * The 7th byte (EXT #): defines the external sensor model.
154 154  * 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.)
155 155  
156 -=== Decoder in TTN V3 ===
163 +=== 2.4.1 Decoder in TTN V3 ===
157 157  
158 158  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.
159 159  
... ... @@ -164,7 +164,7 @@
164 164  [[image:image-20220522234118-10.png]]
165 165  
166 166  
167 -=== BAT-Battery Info ===
174 +=== 2.4.2 BAT-Battery Info ===
168 168  
169 169  These two bytes of BAT include the battery state and the actually voltage
170 170  
... ... @@ -189,7 +189,7 @@
189 189  * BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
190 190  * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
191 191  
192 -=== Built-in Temperature ===
199 +=== 2.4.3 Built-in Temperature ===
193 193  
194 194  [[image:image-20220522235639-2.png]]
195 195  
... ... @@ -199,13 +199,13 @@
199 199  
200 200  * Temperature:  (0xF5C6-65536)/100=-26.18℃
201 201  
202 -=== Built-in Humidity ===
209 +=== 2.4.4 Built-in Humidity ===
203 203  
204 204  [[image:image-20220522235639-4.png]]
205 205  
206 206  * Humidity:    0x025C/10=60.4%
207 207  
208 -=== Ext # ===
215 +=== 2.4.5 Ext # ===
209 209  
210 210  Bytes for External Sensor:
211 211  
... ... @@ -214,19 +214,16 @@
214 214  |(% style="width:139px" %)0x01|(% style="width:484px" %)Sensor E3, Temperature Sensor
215 215  |(% style="width:139px" %)0x09|(% style="width:484px" %)Sensor E3, Temperature Sensor, Datalog Mod
216 216  
217 -=== Ext value ===
224 +=== 2.4.6 Ext value ===
218 218  
219 -==== Ext~=1, E3 Temperature Sensor ====
226 +==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
220 220  
221 221  [[image:image-20220522235639-5.png]]
222 222  
223 -
224 224  * DS18B20 temp=0x0ADD/100=27.81℃
225 225  
226 226  The last 2 bytes of data are meaningless
227 227  
228 -
229 -
230 230  [[image:image-20220522235639-6.png]]
231 231  
232 232  * External temperature= (0xF54F-65536)/100=-27.37℃
... ... @@ -233,16 +233,15 @@
233 233  
234 234  The last 2 bytes of data are meaningless
235 235  
236 -
237 237  If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
238 238  
239 239  
240 -==== Ext~=9, E3 sensor with Unix Timestamp ====
243 +==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
241 241  
242 242  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:
243 243  
244 244  
245 -(% style="width:697px" %)
248 +(% border="1" style="width:697px" %)
246 246  |(% 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**
247 247  |(% style="width:96px" %)**Value**|(% style="width:164px" %)[[External temperature>>path:#DS18b20_value]]|(% style="width:104px" %)(((
248 248  [[Built-In>>path:#SHT20_Temperature]]
... ... @@ -260,9 +260,9 @@
260 260  [[Time Stamp>>path:#Unix_Time_Stamp]]
261 261  )))
262 262  
263 -* **Battery status & **[[(% class="wikiinternallink wikiinternallink" %)**Built-in Humidity**>>path:#SHT20_Humidity]]
266 +* **Battery status & **[[(% class="wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink" %)**Built-in Humidity**>>path:#SHT20_Humidity]]
264 264  
265 -(% style="width:587px" %)
268 +(% border="1" style="width:587px" %)
266 266  |Bit(bit)|(% style="width:280px" %)[15:14]|(% style="width:136px" %)[11:0]
267 267  |Value|(% style="width:280px" %)(((
268 268  BAT Status
... ... @@ -282,7 +282,7 @@
282 282  
283 283  * **Status & Ext Byte**
284 284  
285 -(% style="width:732px" %)
288 +(% border="1" style="width:732px" %)
286 286  |(% 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]**
287 287  |(% 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" %)(((
288 288  Ext:
... ... @@ -294,11 +294,10 @@
294 294  * 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.
295 295  * 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)
296 296  
297 -== Show data on Datacake ==
300 +== 2.5 Show data on Datacake ==
298 298  
299 299  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:
300 300  
301 -
302 302  **Step 1**: Be sure that your device is programmed and properly connected to the LoRaWAN network.
303 303  
304 304  **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.
... ... @@ -323,11 +323,11 @@
323 323  [[image:image-20220523000825-10.png||height="432" width="762"]]
324 324  
325 325  
326 -== Datalog Feature ==
328 +== 2.6 Datalog Feature ==
327 327  
328 328  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.
329 329  
330 -=== Unix TimeStamp ===
332 +=== 2.6.1 Unix TimeStamp ===
331 331  
332 332  LHT65N uses Unix TimeStamp format based on
333 333  
... ... @@ -338,12 +338,12 @@
338 338  
339 339  Below is the converter example
340 340  
341 -[[image:image-20220523001219-12.png||height="353" width="853"]]
343 +[[image:image-20220523001219-12.png||height="302" width="730"]]
342 342  
343 343  So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
344 344  
345 345  
346 -=== Set Device Time ===
348 +=== 2.6.2 Set Device Time ===
347 347  
348 348  There are two ways to set device’s time:
349 349  
... ... @@ -361,16 +361,15 @@
361 361  User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
362 362  
363 363  
364 -=== Poll sensor value ===
366 +=== 2.6.3 Poll sensor value ===
365 365  
366 366  User can poll sensor value based on timestamps from the server. Below is the downlink command.
367 367  
368 368  
369 -(% style="width:454px" %)
371 +(% border="1" style="width:454px" %)
370 370  |(% style="width:69px" %)1byte|(% style="width:129px" %)4bytes|(% style="width:134px" %)4bytes|(% style="width:119px" %)1byte
371 371  |(% style="width:69px" %)31|(% style="width:129px" %)Timestamp start|(% style="width:134px" %)Timestamp end|(% style="width:119px" %)Uplink Interval
372 372  
373 -
374 374  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.
375 375  
376 376  
... ... @@ -381,7 +381,7 @@
381 381  Uplink Internal =5s，means LHT65N will send one packet every 5s. range 5~~255s.
382 382  
383 383  
384 -=== Datalog Uplink payload ===
385 +=== 2.6.4 Datalog Uplink payload ===
385 385  
386 386  The Datalog poll reply uplink will use below payload format.
387 387  
... ... @@ -388,6 +388,7 @@
388 388  
389 389  Retrieval data payload
390 390  
392 +(% border="1" %)
391 391  |**Size(bytes)**|**2**|**2**|**2**|**1**|**4**
392 392  |**Value**|[[External sensor data>>path:#Extension_sensor_value]]|(((
393 393  [[Built-In>>path:#SHT20_Temperature]]
... ... @@ -403,10 +403,10 @@
403 403  
404 404  )))
405 405  
406 -
407 407  Poll message flag & Ext
408 408  
409 409  
411 +(% border="1" %)
410 410  |**Bits**|**7**|**6**|**5**|**4**|**[3:0]**
411 411  |**Status & Ext**|Not Defined|Poll Message Flag|Sync time OK|Unix Time Request|(((
412 412  Ext:
... ... @@ -414,7 +414,6 @@
414 414  0b(1001)
415 415  )))
416 416  
417 -
418 418  Poll Message Flag: 1: This message is a poll message reply.
419 419  
420 420  * Poll Message Flag is set to 1.
... ... @@ -467,7 +467,7 @@
467 467  
468 468  LHT65N will uplink this payload.
469 469  
470 -[[image:image-20220523001219-13.png]]
471 +[[image:image-20220523001219-13.png||height="421" width="727"]]
471 471  
472 472  7FFF089801464160065F977FFF088E014B41600660097FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
473 473  
... ... @@ -486,7 +486,7 @@
486 486  Unix time is 0x60065F97=1611030423s=21/1/19 04:27:03
487 487  
488 488  
489 -== Alarm Mode ==
490 +== 2.7 Alarm Mode ==
490 490  
491 491  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.
492 492  
... ... @@ -502,7 +502,7 @@
502 502  
503 503  
504 504  
505 -== LED Indicator ==
506 +== 2.8 LED Indicator ==
506 506  
507 507  The LHT65N has a triple color LED which for easy shows different stage.
508 508  
... ... @@ -517,17 +517,14 @@
517 517  
518 518  ----
519 519  
520 -== Installation ==
521 +== 2.9 Installation ==
521 521  
522 -[[image:image-20220516231650-1.png||height="632" width="620"]]
523 +[[image:image-20220516231650-1.png||height="436" width="428"]]
523 523  
525 += 3. Sensors & Accessories =
524 524  
527 +== 3.1 E3 Temperature Probe ==
525 525  
526 -
527 -= Sensors & Accessories =
528 -
529 -== E3 Temperature Probe ==
530 -
531 531  [[image:image-20220515080154-4.png||height="182" width="161"]] [[image:image-20220515080330-5.png||height="201" width="195"]]
532 532  
533 533  
... ... @@ -539,36 +539,350 @@
539 539  * Operating Range: -40 ~~ 125 °C
540 540  * -55°C to 125°C
541 541  * Working voltage 2.35v ~~ 5v
542 -
543 543  
544 -= Battery & How to replace =
541 += 4. Configure LHT65N via AT Command or LoRaWAN Downlink =
545 545  
546 -== Battery Type ==
543 +Use can configure LHT65N via AT Command or LoRaWAN Downlink.
547 547  
545 +* AT Command Connection: See [[FAQ>>path:#AT_COMMAND]].
546 +* LoRaWAN Downlink instruction for different platforms:
547 +
548 +[[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]]
549 +
550 +There are two kinds of commands to configure LHT65N, they are:
551 +
552 +* **General Commands**.
553 +
554 +These commands are to configure:
555 +
556 +* General system settings like: uplink interval.
557 +* LoRaWAN protocol & radio-related commands.
558 +
559 +They are the same for all Dragino Devices which supports DLWS-005 LoRaWAN Stack(Note~*~*). These commands can be found on the wiki:
560 +
561 +[[http:~~/~~/wiki.dragino.com/index.php?title=End_Device_Downlink_Command>>url:http://wiki.dragino.com/index.php?title=End_Device_Downlink_Command]]
562 +
563 +* **Commands special design for LHT65N**
564 +
565 +These commands are only valid for LHT65N, as below:
566 +
567 +== 4.1 Set Transmit Interval Time ==
568 +
569 +Feature: Change LoRaWAN End Node Transmit Interval.
570 +
571 +**AT Command: AT+TDC**
572 +
573 +(% border="1" %)
574 +|**Command Example**|**Function**|**Response**
575 +|AT+TDC?|Show current transmit Interval|(((
576 +30000
577 +
578 +OK
579 +
580 +the interval is 30000ms = 30s
581 +)))
582 +|AT+TDC=60000|Set Transmit Interval|(((
583 +OK
584 +
585 +Set transmit interval to 60000ms = 60 seconds
586 +)))
587 +
588 +**Downlink Command: 0x01**
589 +
590 +Format: Command Code (0x01) followed by 3 bytes time value.
591 +
592 +If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
593 +
594 +* Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
595 +* Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
596 +
597 +== 4.2 Set External Sensor Mode ==
598 +
599 +Feature: Change External Sensor Mode.
600 +
601 +**AT Command: AT+EXT**
602 +
603 +(% border="1" %)
604 +|**Command Example**|**Function**|**Response**
605 +|AT+EXT?|Get current external sensor mode|(((
606 +1
607 +
608 +OK
609 +
610 +External Sensor mode =1
611 +)))
612 +|AT+EXT=1|(% colspan="2" %)Set external sensor mode to 1
613 +|AT+EXT=9|(% colspan="2" %)Set to external DS18B20 with timestamp
614 +
615 +**Downlink Command: 0xA2**
616 +
617 +Total bytes: 2 ~~ 5 bytes
618 +
619 +Example:
620 +
621 +* 0xA201: Set external sensor type to E1
622 +* 0xA209: Same as AT+EXT=9
623 +* 0xA20702003c,Same as AT+SETCNT=60
624 +
625 +== 4.3 Enable/Disable uplink Temperature probe ID ==
626 +
627 +Feature: If PID is enabled, device will send the temperature probe ID on:
628 +
629 +* First Packet after OTAA Join
630 +* Every 24 hours since the first packet.
631 +
632 +PID is default set to disable (0)
633 +
634 +
635 +**AT Command:**
636 +
637 +(% border="1" %)
638 +|**Command Example**|**Function**|**Response**
639 +|AT+PID=1|Enable PID uplink|OK
640 +
641 +**Downlink Command:**
642 +
643 +* 0xA800     à AT+PID=0
644 +* 0xA801     à AT+PID=1
645 +
646 +== 4.4 Set Password ==
647 +
648 +Feature: Set device password, max 9 digits
649 +
650 +**AT Command: AT+PWORD**
651 +
652 +(% border="1" %)
653 +|**Command Example**|**Function**|**Response**
654 +|AT+PWORD=?|Show password|(((
655 +123456
656 +
657 +
658 +OK
659 +)))
660 +|AT+PWORD=999999|Set password|OK
661 +
662 +**Downlink Command:**
663 +
664 +No downlink command for this feature.
665 +
666 +== 4.5 Quit AT Command ==
667 +
668 +Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
669 +
670 +**AT Command: AT+DISAT**
671 +
672 +(% border="1" %)
673 +|**Command Example**|**Function**|**Response**
674 +|AT+DISAT|Quit AT Commands mode|OK
675 +
676 +**Downlink Command:**
677 +
678 +No downlink command for this feature.
679 +
680 +
681 +== 4.6 Set to sleep mode ==
682 +
683 +Feature: Set device to sleep mode
684 +
685 +**AT Command: AT+SLEEP**
686 +
687 +(% border="1" %)
688 +| | |
689 +|**Command Example**|**Function**|**Response**
690 +|AT+SLEEP|Set to sleep mode|(((
691 +Clear all stored sensor data…
692 +
693 +OK
694 +)))
695 +
696 +**Downlink Command:**
697 +
698 +* There is no downlink command to set to Sleep mode.
699 +
700 +== 4.7 Set system time ==
701 +
702 +Feature: Set system time, unix format. [[See here for format detail.>>path:#TimeStamp]]
703 +
704 +**AT Command:**
705 +
706 +(% border="1" %)
707 +|**Command Example**|**Function**
708 +|AT+TIMESTAMP=1611104352|(((
709 +OK
710 +
711 +Set System time to 2021-01-20 00:59:12
712 +)))
713 +
714 +**Downlink Command:**
715 +
716 +0x306007806000 ~/~/ Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
717 +
718 +== 4.8 Set Time Sync Mode ==
719 +
720 +Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
721 +
722 +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.
723 +
724 +
725 +**AT Command:**
726 +
727 +|**Command Example**|**Function**
728 +|AT+SYNCMOD=1|Enable Sync system time via LoRaWAN MAC Command (DeviceTimeReq)
729 +
730 +**Downlink Command:**
731 +
732 +0x28 01 ~/~/ Same As AT+SYNCMOD=1
733 +
734 +0x28 00 ~/~/ Same As AT+SYNCMOD=0
735 +
736 +== 4.9 Set Time Sync Interval ==
737 +
738 +Feature: Define System time sync interval. SYNCTDC default value: 10 days.
739 +
740 +**AT Command:**
741 +
742 +(% border="1" %)
743 +|**Command Example**|**Function**
744 +|AT+SYNCTDC=0x0A|Set SYNCTDC to 10 (0x0A), so the sync time is 10 days.
745 +
746 +**Downlink Command:**
747 +
748 +0x29 0A ~/~/ Same as AT+SYNCTDC=0x0A
749 +
750 +== 4.10 Print data entries base on page. ==
751 +
752 +Feature: Print the sector data from start page to stop page (max is 416 pages).
753 +
754 +**AT Command: AT+PDTA**
755 +
756 +(% border="1" %)
757 +|**Command Example**|**Response**
758 +|(((
759 +AT+PDTA=1,3
760 +
761 +
762 +
763 +Print page 1 to 3
764 +)))|(((
765 +8019500 19/6/26 16:48 1 2992 sht_temp=28.21 sht_hum=71.5 ds_temp=27.31
766 +
767 +8019510 19/6/26 16:53 1 2994 sht_temp=27.64 sht_hum=69.3 ds_temp=26.93
768 +
769 +8019520 19/6/26 16:58 1 2996 sht_temp=28.39 sht_hum=72.0 ds_temp=27.06
770 +
771 +8019530 19/6/26 17:03 1 2996 sht_temp=27.97 sht_hum=70.4 ds_temp=27.12
772 +
773 +8019540 19/6/26 17:08 1 2996 sht_temp=27.80 sht_hum=72.9 ds_temp=27.06
774 +
775 +8019550 19/6/26 17:13 1 2998 sht_temp=27.30 sht_hum=72.4 ds_temp=26.68
776 +
777 +8019560 19/6/26 17:22 1 2992 sht_temp=26.27 sht_hum=62.3 ds_temp=26.56
778 +
779 +8019570
780 +
781 +8019580
782 +
783 +8019590
784 +
785 +80195A0
786 +
787 +80195B0
788 +
789 +80195C0
790 +
791 +80195D0
792 +
793 +80195E0
794 +
795 +80195F0
796 +
797 +
798 +OK
799 +)))
800 +
801 +**Downlink Command:**
802 +
803 +No downlink commands for feature
804 +
805 +== 4.11 Print last few data entries. ==
806 +
807 +Feature: Print the last few data entries
808 +
809 +**AT Command: AT+PLDTA**
810 +
811 +(% border="1" %)
812 +|**Command Example**|**Response**
813 +|(((
814 +AT+PLDTA=5
815 +
816 +
817 +
818 +Print last 5 entries
819 +)))|(((
820 +Stop Tx and RTP events when read sensor data
821 +
822 +1 19/6/26 13:59 1 3005 sht_temp=27.09 sht_hum=79.5 ds_temp=26.75
823 +
824 +2 19/6/26 14:04 1 3007 sht_temp=26.65 sht_hum=74.8 ds_temp=26.43
825 +
826 +3 19/6/26 14:09 1 3007 sht_temp=26.91 sht_hum=77.9 ds_temp=26.56
827 +
828 +4 19/6/26 14:15 1 3007 sht_temp=26.93 sht_hum=76.7 ds_temp=26.75
829 +
830 +5 19/6/26 14:20 1 3007 sht_temp=26.78 sht_hum=76.6 ds_temp=26.43
831 +
832 +Start Tx and RTP events
833 +
834 +OK
835 +)))
836 +
837 +**Downlink Command:**
838 +
839 +No downlink commands for feature
840 +
841 +== 4.12 Clear Flash Record ==
842 +
843 +Feature: Clear flash storage for data log feature.
844 +
845 +**AT Command: AT+CLRDTA**
846 +
847 +(% border="1" %)
848 +|**Command Example**|**Function**|**Response**
849 +|AT+CLRDTA|Clear date record|(((
850 +Clear all stored sensor data…
851 +
852 +OK
853 +)))
854 +
855 +**Downlink Command: 0xA3**
856 +
857 +* Example: 0xA301 ~/~/Same as AT+CLRDTA
858 +
859 += 5. Battery & How to replace =
860 +
861 +== 5.1 Battery Type ==
862 +
548 548  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.
549 549  
550 550  The discharge curve is not linear so can’t simply use percentage to show the battery level. Below is the battery performance.
551 551  [[image:image-20220515075034-1.png||height="208" width="644"]]
552 552  
553 -
554 554  The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
555 555  
556 556  
557 -== Replace Battery ==
871 +== 5.2 Replace Battery ==
558 558  
559 559  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.
560 560  
561 561  [[image:image-20220515075440-2.png||height="338" width="272"]][[image:image-20220515075625-3.png||height="193" width="257"]]
562 562  
877 +== 5.3 Battery Life Analyze ==
563 563  
564 -== Battery Life Analyze ==
565 -
566 566  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:
567 567  https:~/~/www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf
568 568  
882 += 6. Order Info =
569 569  
570 -= Order Info =
571 -
572 572  Part Number: (% class="mark" %)**LHT65N-XX**
573 573  
574 574  **XX**: The default frequency band
... ... @@ -586,7 +586,7 @@
586 586  
587 587  * **E3**: External Temperature Probe
588 588  
589 -= Packing Info =
901 += 7. Packing Info =
590 590  
591 591  **Package Includes**:
592 592  
... ... @@ -601,10 +601,10 @@
601 601  * Package Size / pcs : 14.5 x 8 x 5 cm
602 602  * Weight / pcs : 170g
603 603  
604 -= FCC Warning =
916 += 8. FCC Warning =
605 605  
606 606  This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
607 607  
608 -(1) This device may not cause harmful interference, and
920 +(1) This device may not cause harmful interference；
609 609  
610 -(2) this device must accept any interference received, including interference that may cause undesired operation
922 +(2) this device must accept any interference received, including interference that may cause undesired operation.
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