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

Summary

Details

Page properties
Author
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1 -XWiki.Xiaoling
1 +XWiki.Bei
Content
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58 58  * Tri-color LED to indicate working status
59 59  * Datalog feature
60 60  
61 +
62 +
61 61  == 1.3 Specification ==
62 62  
63 63  
... ... @@ -82,6 +82,8 @@
82 82  * ±2°C accuracy from -55°C to +125°C
83 83  * Operating Range: -55 °C ~~ 125 °C
84 84  
87 +
88 +
85 85  = 2. Connect LHT65N to IoT Server =
86 86  
87 87  == 2.1 How does LHT65N work? ==
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263 263  * The 7th byte (EXT #): defines the external sensor model.
264 264  * 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.)
265 265  
270 +
271 +
266 266  === 2.4.1 Decoder in TTN V3 ===
267 267  
268 268  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.
... ... @@ -293,6 +293,8 @@
293 293  * BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
294 294  * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
295 295  
302 +
303 +
296 296  === 2.4.3 Built-in Temperature ===
297 297  
298 298  [[image:image-20220522235639-2.png||_mstalt="431756" _mstvisible="3" height="138" width="722"]]
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305 305  
306 306  
307 307  
308 -
309 309  === 2.4.4 Built-in Humidity ===
310 310  
311 311  [[image:image-20220522235639-4.png||_mstalt="432484" _mstvisible="3" height="138" width="722"]]
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314 314  
315 315  
316 316  
317 -
318 318  === 2.4.5 Ext # ===
319 319  
320 320  Bytes for External Sensor:
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461 461  
462 462  * (% _msthash="504956" _msttexthash="245037" _mstvisible="4" %)**Status & Ext Byte**
463 463  
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)
470 +[[image:image-20220523152434-16.png||_mstalt="453921" _mstvisible="3"]]
467 467  
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)
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)
471 471  
472 472  
473 473  
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1053 1053  * RED LED when external sensor is not connected
1054 1054  * For each success downlink, the PURPLE LED will blink once
1055 1055  
1060 +
1061 +
1056 1056  == 2.9 installation ==
1057 1057  
1058 1058  (% _mstvisible="1" %)
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1103 1103  * Operating Range: -40 ~~ 125 °C
1104 1104  * Working voltage 2.35v ~~ 5v
1105 1105  
1112 +
1113 +
1106 1106  = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1107 1107  
1108 1108  (((
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1168 1168  
1169 1169  * **Example 2**: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1170 1170  
1179 +
1180 +
1171 1171  == 4.2 Set External Sensor Mode ==
1172 1172  
1173 1173  Feature: Change External Sensor Mode.
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1189 1189  
1190 1190  * 0xA20702003c: Same as AT+SETCNT=60
1191 1191  
1202 +
1203 +
1192 1192  == 4.3 Enable/Disable uplink Temperature probe ID ==
1193 1193  
1194 1194  (((
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1216 1216  * **0xA800**  **~-~->** AT+PID=0
1217 1217  * **0xA801**     **~-~->** AT+PID=1
1218 1218  
1231 +
1232 +
1219 1219  == 4.4 Set Password ==
1220 1220  
1221 1221  Feature: Set device password, max 9 digits
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1262 1262  
1263 1263  * There is no downlink command to set to Sleep mode.
1264 1264  
1279 +
1280 +
1265 1265  == 4.7 Set system time ==
1266 1266  
1267 1267  Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
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1358 1358  
1359 1359  * Example: 0xA301 ~/~/Same as AT+CLRDTA
1360 1360  
1377 +
1378 +
1361 1361  == 4.13 Auto Send None-ACK messages ==
1362 1362  
1363 1363  (% _msthash="315394" _msttexthash="51837149" _mstvisible="1" %)
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1376 1376  
1377 1377  * Example: 0x3401 ~/~/Same as AT+PNACKMD=1
1378 1378  
1397 +
1398 +
1379 1379  = 5. Battery & How to replace =
1380 1380  
1381 1381  == 5.1 Battery Type ==
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1828 1828  
1829 1829  * (% style="color:red" %)**E3**(%%): External Temperature Probe
1830 1830  
1851 +
1852 +
1831 1831  = 8. Packing Info =
1832 1832  
1833 1833  
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1841 1841  * Device Size:  10 x 10 x 3.5 cm
1842 1842  * Device Weight: 120.5g
1843 1843  
1866 +
1867 +
1844 1844  = 9. Reference material =
1845 1845  
1846 1846  * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
1847 1847  
1872 +
1873 +
1848 1848  = 10. FCC Warning =
1849 1849  
1850 1850  This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions: