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Last modified by Xiaoling on 2023/07/18 10:12
From version 170.21
edited by Xiaoling
on 2022/06/22 11:07
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  
21 +
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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519 519  1. IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specify time range.
520 520  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.
521 521  
530 +
531 +
522 522  === 2.6.2 Unix TimeStamp ===
523 523  
524 524  
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908 908  
909 909  
910 910  
911 -
912 912  == 2.9 installation ==
913 913  
914 914  (% _mstvisible="1" %)
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945 945  
946 946  
947 947  
948 -
949 949  = 4. Configure LHT65N via AT command or LoRaWAN downlink =
950 950  
951 951  Use can configure LHT65N via AT Command or LoRaWAN Downlink.
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989 989  
990 990  * **Example 2**: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
991 991  
992 -
993 993  == 4.2 Set External Sensor Mode ==
994 994  
995 995  Feature: Change External Sensor Mode.
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1012 1012  * 0xA20702003c: Same as AT+SETCNT=60
1013 1013  
1014 1014  
1015 -
1016 1016  == 4.3 Enable/Disable uplink Temperature probe ID ==
1017 1017  
1018 1018  (((
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1041 1041  * **0xA801**     **~-~->** AT+PID=1
1042 1042  
1043 1043  
1044 -
1045 1045  == 4.4 Set Password ==
1046 1046  
1047 1047  Feature: Set device password, max 9 digits
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1090 1090  
1091 1091  
1092 1092  
1093 -
1094 1094  == 4.7 Set system time ==
1095 1095  
1096 1096  Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
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1189 1189  
1190 1190  
1191 1191  
1192 -
1193 1193  == 4.13 Auto Send None-ACK messages ==
1194 1194  
1195 1195  (% _msthash="315394" _msttexthash="51837149" _mstvisible="1" %)
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1204 1204  (% _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**
1205 1205  (% _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
1206 1206  
1207 -
1208 1208  (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1209 1209  
1210 1210  * Example: 0x3401 ~/~/Same as AT+PNACKMD=1
1211 1211  
1212 1212  
1213 -
1214 1214  = 5. Battery & How to replace =
1215 1215  
1216 1216  == 5.1 Battery Type ==
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1618 1618  
1619 1619  
1620 1620  
1621 -
1622 1622  = 8. Packing Info =
1623 1623  
1624 1624  
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1625 1625  **Package Includes**:
1626 1626  
1627 1627  * LHT65N Temperature & Humidity Sensor x 1
1628 +* Optional external sensor
1628 1628  
1629 -*Optional external sensor
1630 -
1631 -
1632 1632  **Dimension and weight**:
1633 1633  
1634 1634  * Device Size:  10 x 10 x 3.5 cm
1635 -
1636 1636  * Device Weight: 120.5g
1637 1637  
1638 1638  
1639 -
1640 1640  = 9. Reference material =
1641 1641  
1642 1642  * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
1643 1643  
1644 -
1645 1645  = 10. FCC Warning =
1646 1646  
1647 1647  This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions: