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Last modified by Xiaoling on 2023/07/18 10:12
From version 170.25
edited by Xiaoling
on 2022/06/22 11:16
Change comment: There is no comment for this version
To version 170.23
edited by Xiaoling
on 2022/06/22 11:09
Change comment: There is no comment for this version

Summary

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18 18  
19 19  == 1.1 What is LHT65N Temperature & Humidity Sensor ==
20 20  
21 -
22 -(((
23 23  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.**
24 -)))
25 25  
26 -(((
27 27  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.
28 -)))
29 29  
30 -(((
31 31  LHT65N has a built-in 2400mAh non-chargeable battery which can be used for up to 10 years*.
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33 33  
34 -(((
35 35  LHT65N is full compatible with LoRaWAN v1.0.3 Class A protocol, it can work with a standard LoRaWAN gateway.
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37 37  
38 -(((
39 39  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.
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41 41  
42 -(((
43 43  *The actual battery life depends on how often to send data, please see the battery analyzer chapter.
44 -)))
45 45  
46 46  
47 47  == 1.2 Features ==
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58 58  * Tri-color LED to indicate working status
59 59  * Datalog feature
60 60  
61 -
62 -
63 -
64 64  == 1.3 Specification ==
65 65  
66 66  
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256 256  
257 257  
258 258  
243 +
259 259  === 2.4.1 Decoder in TTN V3 ===
260 260  
261 261  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.
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287 287  * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
288 288  
289 289  
275 +
290 290  === 2.4.3 Built-in Temperature ===
291 291  
292 292  [[image:image-20220522235639-2.png||_mstalt="431756" _mstvisible="3" height="138" width="722"]]
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297 297  
298 298  * Temperature:  (0xF5C6-65536)/100=-26.18℃
299 299  
286 +
300 300  === 2.4.4 Built-in Humidity ===
301 301  
302 302  [[image:image-20220522235639-4.png||_mstalt="432484" _mstvisible="3" height="138" width="722"]]
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303 303  
304 304  * Humidity:    0x025C/10=60.4%
305 305  
293 +
306 306  === 2.4.5 Ext # ===
307 307  
308 308  Bytes for External Sensor:
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456 456  * 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)
457 457  
458 458  
447 +
459 459  ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
460 460  
461 461  In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
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532 532  
533 533  
534 534  
524 +
535 535  === 2.6.2 Unix TimeStamp ===
536 536  
537 537  
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921 921  
922 922  
923 923  
914 +
924 924  == 2.9 installation ==
925 925  
926 926  (% _mstvisible="1" %)
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957 957  
958 958  
959 959  
951 +
960 960  = 4. Configure LHT65N via AT command or LoRaWAN downlink =
961 961  
962 962  Use can configure LHT65N via AT Command or LoRaWAN Downlink.
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1000 1000  
1001 1001  * **Example 2**: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1002 1002  
995 +
1003 1003  == 4.2 Set External Sensor Mode ==
1004 1004  
1005 1005  Feature: Change External Sensor Mode.
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1022 1022  * 0xA20702003c: Same as AT+SETCNT=60
1023 1023  
1024 1024  
1018 +
1025 1025  == 4.3 Enable/Disable uplink Temperature probe ID ==
1026 1026  
1027 1027  (((
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1050 1050  * **0xA801**     **~-~->** AT+PID=1
1051 1051  
1052 1052  
1047 +
1053 1053  == 4.4 Set Password ==
1054 1054  
1055 1055  Feature: Set device password, max 9 digits
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1098 1098  
1099 1099  
1100 1100  
1096 +
1101 1101  == 4.7 Set system time ==
1102 1102  
1103 1103  Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
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1196 1196  
1197 1197  
1198 1198  
1195 +
1199 1199  == 4.13 Auto Send None-ACK messages ==
1200 1200  
1201 1201  (% _msthash="315394" _msttexthash="51837149" _mstvisible="1" %)
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1210 1210  (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 171px;" %)(% _msthash="1231737" _msttexthash="251862" _mstvisible="6" %)**Command Example**|=(% _mstvisible="4" style="width: 219px;" %)(% _msthash="1231738" _msttexthash="116025" _mstvisible="6" %)**Function**|=(% _mstvisible="4" style="width: 119px;" %)(% _msthash="1231739" _msttexthash="116831" _mstvisible="6" %)**Response**
1211 1211  (% _mstvisible="3" %)|(% _msthash="1231321" _msttexthash="130455" _mstvisible="4" style="width:171px" %)AT+PNACKMD=1|(% _msthash="1231322" _msttexthash="377026" _mstvisible="4" style="width:219px" %)Poll None-ACK message|(% _msthash="1231323" _msttexthash="14989" _mstvisible="4" style="width:119px" %)OK
1212 1212  
1210 +
1213 1213  (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1214 1214  
1215 1215  * Example: 0x3401 ~/~/Same as AT+PNACKMD=1
1216 1216  
1217 1217  
1216 +
1218 1218  = 5. Battery & How to replace =
1219 1219  
1220 1220  == 5.1 Battery Type ==
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1622 1622  
1623 1623  
1624 1624  
1624 +
1625 1625  = 8. Packing Info =
1626 1626  
1627 1627  
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1630 1630  * LHT65N Temperature & Humidity Sensor x 1
1631 1631  * Optional external sensor
1632 1632  
1633 +
1633 1633  **Dimension and weight**:
1634 1634  
1635 1635  * Device Size:  10 x 10 x 3.5 cm
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1636 1636  * Device Weight: 120.5g
1637 1637  
1638 1638  
1640 +
1639 1639  = 9. Reference material =
1640 1640  
1641 1641  * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
1642 1642  
1645 +
1643 1643  = 10. FCC Warning =
1644 1644  
1645 1645  This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions: