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Last modified by Xiaoling on 2023/07/18 10:12
From version 261.4
edited by Xiaoling
on 2023/07/17 16:06
Change comment: Update document after refactoring.
To version 261.1
edited by Xiaoling
on 2023/07/17 15:24
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Summary

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Title
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1 -LHT65N -- LoRaWAN Temperature & Humidity Sensor Manual
1 +LHT65N LoRaWAN Temperature & Humidity Sensor Manual
Parent
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1 -Main.User Manual for LoRaWAN End Nodes.WebHome
1 +Main.WebHome
Content
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56 56  * Datalog feature (Max 3328 records)
57 57  
58 58  
59 -
60 60  == 1.3 Specification ==
61 61  
62 62  
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82 82  * Operating Range: -55 °C ~~ 125 °C
83 83  
84 84  
85 -
86 86  = 2. Connect LHT65N to IoT Server =
87 87  
88 88  == 2.1 How does LHT65N work? ==
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246 246  * The 8^^th^^ ~~ 11^^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.)
247 247  
248 248  
249 -
250 250  === 2.4.1 Decoder in TTN V3 ===
251 251  
252 252  
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290 290  * Battery Voltage =0xCBA4&0x3FFF=0x0BA4=2980mV
291 291  
292 292  
293 -
294 294  === 2.4.3 Built-in Temperature ===
295 295  
296 296  
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303 303  * Temperature:  (0xF5C6-65536)/100=-26.18℃
304 304  
305 305  
306 -
307 307  (% style="display:none" %)
308 308  
309 309  === 2.4.4 Built-in Humidity ===
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314 314  * Humidity:    0x025C/10=60.4%
315 315  
316 316  
317 -
318 318  (% style="display:none" %)
319 319  
320 320  === 2.4.5 Ext # ===
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364 364  Timestamp mode is designed for LHT65N with E3 probe, it will send the uplink payload with Unix timestamp. With the limitation of 11 bytes (max distance of AU915/US915/AS923 band), the time stamp mode will be lack of BAT voltage field, instead, it shows the battery status. The payload is as below:
365 365  )))
366 366  
361 +
367 367  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:480px" %)
368 368  |=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((
369 369  **Size(bytes)**
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417 417  * (% 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)
418 418  
419 419  
420 -
421 421  ==== 2.4.6.3 Ext~=6, ADC Sensor(use with E2 Cable) ====
422 422  
423 423  
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603 603  Timestamp mode is designed for LHT65N with E2 probe, it will send the uplink payload with Unix timestamp. With the limitation of 11 bytes (max distance of AU915/US915/AS923 band), the time stamp mode will be lack of BAT voltage field, instead, it shows the battery status. The payload is as below:
604 604  )))
605 605  
600 +
606 606  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:480px" %)
607 607  |=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((
608 608  **Size(bytes)**
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656 656  * (% 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)
657 657  
658 658  
659 -
660 660  == 2.5 Show data on Datacake ==
661 661  
662 662  
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1074 1074  * For each success downlink, the PURPLE LED will blink once
1075 1075  
1076 1076  
1077 -
1078 1078  == 2.9 installation ==
1079 1079  
1080 1080  
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1166 1166  * Operating Range: 0 ~~ 96 % RH
1167 1167  
1168 1168  
1169 -
1170 1170  = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1171 1171  
1172 1172  
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1238 1238  * **Example 2**: Downlink Payload: 0100003C  ~/~/ Set Transmit Interval (TDC) = 60 seconds
1239 1239  
1240 1240  
1241 -
1242 1242  == 4.2 Set External Sensor Mode ==
1243 1243  
1244 1244  
1245 1245  Feature: Change External Sensor Mode.
1246 1246  
1238 +
1247 1247  (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1248 1248  
1241 +
1249 1249  (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:468px" %)
1250 1250  |(% style="background-color:#d9e2f3; color:#0070c0; width:155px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:153px" %)**Function**|(% style="background-color:#d9e2f3; color:#0070c0; width:160px" %)**Response**
1251 1251  |(% style="width:155px" %)AT+EXT=?|(% style="width:151px" %)Get current external sensor mode|(% style="width:158px" %)1 OK External Sensor mode =1
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1265 1265  * 0xA20702003c: Same as AT+SETCNT=60
1266 1266  
1267 1267  
1268 -
1269 1269  == 4.3 Enable/Disable uplink Temperature probe ID ==
1270 1270  
1271 1271  
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1298 1298  * **0xA801**     **~-~->** AT+PID=1
1299 1299  
1300 1300  
1301 -
1302 1302  == 4.4 Set Password ==
1303 1303  
1304 1304  
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1359 1359  * There is no downlink command to set to Sleep mode.
1360 1360  
1361 1361  
1362 -
1363 1363  == 4.7 Set system time ==
1364 1364  
1365 1365  
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1467 1467  * Example: 0xA301  ~/~/  Same as AT+CLRDTA
1468 1468  
1469 1469  
1470 -
1471 1471  == 4.13 Auto Send None-ACK messages ==
1472 1472  
1473 1473  
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1486 1486  * Example: 0x3401  ~/~/  Same as AT+PNACKMD=1
1487 1487  
1488 1488  
1489 -
1490 1490  == 4.14 Modified WMOD command for external sensor TMP117 or DS18B20 temperature alarm(Since firmware 1.3.0) ==
1491 1491  
1492 1492  
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1934 1934  * (% style="color:red" %)**E3**(%%): External Temperature Probe
1935 1935  
1936 1936  
1937 -
1938 1938  = 8. Packing Info =
1939 1939  
1940 1940  
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1949 1949  * Device Weight: 120.5g
1950 1950  
1951 1951  
1952 -
1953 1953  = 9. Reference material =
1954 1954  
1955 1955  
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1956 1956  * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0]]
1957 1957  
1958 1958  
1959 -
1960 1960  = 10. FCC Warning =
1961 1961  
1962 1962