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Last modified by Xiaoling on 2023/07/18 10:12
From version 170.23
edited by Xiaoling
on 2022/06/22 11:09
Change comment: There is no comment for this version
To version 170.24
edited by Xiaoling
on 2022/06/22 11:15
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  
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22 +(((
21 21  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.**
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22 22  
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23 23  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.
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24 24  
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25 25  LHT65N has a built-in 2400mAh non-chargeable battery which can be used for up to 10 years*.
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26 26  
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27 27  LHT65N is full compatible with LoRaWAN v1.0.3 Class A protocol, it can work with a standard LoRaWAN gateway.
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28 28  
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29 29  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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30 30  
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31 31  *The actual battery life depends on how often to send data, please see the battery analyzer chapter.
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32 32  
33 33  
34 34  == 1.2 Features ==
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240 240  
241 241  
242 242  
243 -
244 244  === 2.4.1 Decoder in TTN V3 ===
245 245  
246 246  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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272 272  * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
273 273  
274 274  
275 -
276 276  === 2.4.3 Built-in Temperature ===
277 277  
278 278  [[image:image-20220522235639-2.png||_mstalt="431756" _mstvisible="3" height="138" width="722"]]
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283 283  
284 284  * Temperature:  (0xF5C6-65536)/100=-26.18℃
285 285  
286 -
287 287  === 2.4.4 Built-in Humidity ===
288 288  
289 289  [[image:image-20220522235639-4.png||_mstalt="432484" _mstvisible="3" height="138" width="722"]]
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290 290  
291 291  * Humidity:    0x025C/10=60.4%
292 292  
293 -
294 294  === 2.4.5 Ext # ===
295 295  
296 296  Bytes for External Sensor:
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444 444  * 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)
445 445  
446 446  
447 -
448 448  ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
449 449  
450 450  In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
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521 521  
522 522  
523 523  
524 -
525 525  === 2.6.2 Unix TimeStamp ===
526 526  
527 527  
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911 911  
912 912  
913 913  
914 -
915 915  == 2.9 installation ==
916 916  
917 917  (% _mstvisible="1" %)
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948 948  
949 949  
950 950  
951 -
952 952  = 4. Configure LHT65N via AT command or LoRaWAN downlink =
953 953  
954 954  Use can configure LHT65N via AT Command or LoRaWAN Downlink.
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992 992  
993 993  * **Example 2**: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
994 994  
995 -
996 996  == 4.2 Set External Sensor Mode ==
997 997  
998 998  Feature: Change External Sensor Mode.
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1015 1015  * 0xA20702003c: Same as AT+SETCNT=60
1016 1016  
1017 1017  
1018 -
1019 1019  == 4.3 Enable/Disable uplink Temperature probe ID ==
1020 1020  
1021 1021  (((
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1044 1044  * **0xA801**     **~-~->** AT+PID=1
1045 1045  
1046 1046  
1047 -
1048 1048  == 4.4 Set Password ==
1049 1049  
1050 1050  Feature: Set device password, max 9 digits
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1093 1093  
1094 1094  
1095 1095  
1096 -
1097 1097  == 4.7 Set system time ==
1098 1098  
1099 1099  Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
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1192 1192  
1193 1193  
1194 1194  
1195 -
1196 1196  == 4.13 Auto Send None-ACK messages ==
1197 1197  
1198 1198  (% _msthash="315394" _msttexthash="51837149" _mstvisible="1" %)
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1207 1207  (% _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**
1208 1208  (% _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
1209 1209  
1210 -
1211 1211  (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1212 1212  
1213 1213  * Example: 0x3401 ~/~/Same as AT+PNACKMD=1
1214 1214  
1215 1215  
1216 -
1217 1217  = 5. Battery & How to replace =
1218 1218  
1219 1219  == 5.1 Battery Type ==
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1621 1621  
1622 1622  
1623 1623  
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 -
1634 1634  **Dimension and weight**:
1635 1635  
1636 1636  * Device Size:  10 x 10 x 3.5 cm
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1637 1637  * Device Weight: 120.5g
1638 1638  
1639 1639  
1640 -
1641 1641  = 9. Reference material =
1642 1642  
1643 1643  * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
1644 1644  
1645 -
1646 1646  = 10. FCC Warning =
1647 1647  
1648 1648  This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions: