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Last modified by Xiaoling on 2023/07/18 10:12
From version 189.1
edited by Bei Jinggeng
on 2022/07/06 13:48
Change comment: There is no comment for this version
To version 189.2
edited by Xiaoling
on 2022/07/22 10:33
Change comment: There is no comment for this version

Summary

Details

Page properties
Author
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1 -XWiki.Bei
1 +XWiki.Xiaoling
Content
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58 58  * Tri-color LED to indicate working status
59 59  * Datalog feature
60 60  
61 -
62 -
63 63  == 1.3 Specification ==
64 64  
65 65  
... ... @@ -84,8 +84,6 @@
84 84  * ±2°C accuracy from -55°C to +125°C
85 85  * Operating Range: -55 °C ~~ 125 °C
86 86  
87 -
88 -
89 89  = 2. Connect LHT65N to IoT Server =
90 90  
91 91  == 2.1 How does LHT65N work? ==
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267 267  * The 7th byte (EXT #): defines the external sensor model.
268 268  * The 8(% _msthash="734578" _msttexthash="21372" _mstvisible="4" %)^^th^^(%%) ~~ 11(% _msthash="734579" _msttexthash="21372" _mstvisible="4" %)^^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.)
269 269  
270 -
271 -
272 272  === 2.4.1 Decoder in TTN V3 ===
273 273  
274 274  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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299 299  * BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
300 300  * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
301 301  
302 -
303 -
304 304  === 2.4.3 Built-in Temperature ===
305 305  
306 306  [[image:image-20220522235639-2.png||_mstalt="431756" _mstvisible="3" height="138" width="722"]]
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313 313  
314 314  
315 315  
308 +
316 316  === 2.4.4 Built-in Humidity ===
317 317  
318 318  [[image:image-20220522235639-4.png||_mstalt="432484" _mstvisible="3" height="138" width="722"]]
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321 321  
322 322  
323 323  
317 +
324 324  === 2.4.5 Ext # ===
325 325  
326 326  Bytes for External Sensor:
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467 467  
468 468  * (% _msthash="504956" _msttexthash="245037" _mstvisible="4" %)**Status & Ext Byte**
469 469  
470 -[[image:image-20220523152434-16.png||_mstalt="453921" _mstvisible="3"]]
464 +(% border="1" cellspacing="8" style="background-color:#ffffcc; color:green; width:520px" %)
465 +|(% style="width:60px" %)**Bits**|(% style="width:90px" %)**7**|(% style="width:100px" %)**6**|(% style="width:90px" %)**5**|(% style="width:100px" %)**4**|(% style="width:60px" %)**[3:0]**
466 +|(% style="width:96px" %)**Status&Ext**|(% style="width:124px" %)None-ACK Flag|(% style="width:146px" %)Poll Message FLAG|(% style="width:109px" %)Sync time OK|(% style="width:143px" %)Unix Time Request|(% style="width:106px" %)Ext: 0b(1001)
471 471  
472 -* Poll Message Flag:  1: This message is a poll message reply, 0: means this is a normal uplink.
473 -* 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.
474 -* 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)
468 +* (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
469 +* (% style="color:blue" %)**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.
470 +* (% style="color:blue" %)**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)
475 475  
476 476  
477 477  
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1057 1057  * RED LED when external sensor is not connected
1058 1058  * For each success downlink, the PURPLE LED will blink once
1059 1059  
1060 -
1061 -
1062 1062  == 2.9 installation ==
1063 1063  
1064 1064  (% _mstvisible="1" %)
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1109 1109  * Operating Range: -40 ~~ 125 °C
1110 1110  * Working voltage 2.35v ~~ 5v
1111 1111  
1112 -
1113 -
1114 1114  = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1115 1115  
1116 1116  (((
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1176 1176  
1177 1177  * **Example 2**: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1178 1178  
1179 -
1180 -
1181 1181  == 4.2 Set External Sensor Mode ==
1182 1182  
1183 1183  Feature: Change External Sensor Mode.
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1199 1199  
1200 1200  * 0xA20702003c: Same as AT+SETCNT=60
1201 1201  
1202 -
1203 -
1204 1204  == 4.3 Enable/Disable uplink Temperature probe ID ==
1205 1205  
1206 1206  (((
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1228 1228  * **0xA800**  **~-~->** AT+PID=0
1229 1229  * **0xA801**     **~-~->** AT+PID=1
1230 1230  
1231 -
1232 -
1233 1233  == 4.4 Set Password ==
1234 1234  
1235 1235  Feature: Set device password, max 9 digits
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1276 1276  
1277 1277  * There is no downlink command to set to Sleep mode.
1278 1278  
1279 -
1280 -
1281 1281  == 4.7 Set system time ==
1282 1282  
1283 1283  Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
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1374 1374  
1375 1375  * Example: 0xA301 ~/~/Same as AT+CLRDTA
1376 1376  
1377 -
1378 -
1379 1379  == 4.13 Auto Send None-ACK messages ==
1380 1380  
1381 1381  (% _msthash="315394" _msttexthash="51837149" _mstvisible="1" %)
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1394 1394  
1395 1395  * Example: 0x3401 ~/~/Same as AT+PNACKMD=1
1396 1396  
1397 -
1398 -
1399 1399  = 5. Battery & How to replace =
1400 1400  
1401 1401  == 5.1 Battery Type ==
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1848 1848  
1849 1849  * (% style="color:red" %)**E3**(%%): External Temperature Probe
1850 1850  
1851 -
1852 -
1853 1853  = 8. Packing Info =
1854 1854  
1855 1855  
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1863 1863  * Device Size:  10 x 10 x 3.5 cm
1864 1864  * Device Weight: 120.5g
1865 1865  
1866 -
1867 -
1868 1868  = 9. Reference material =
1869 1869  
1870 1870  * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
1871 1871  
1872 -
1873 -
1874 1874  = 10. FCC Warning =
1875 1875  
1876 1876  This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions: