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Last modified by Xiaoling on 2023/07/18 10:12
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edited by Xiaoling
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edited by Xiaoling
on 2023/07/17 16:06
Change comment: Update document after refactoring.

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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.WebHome
1 +Main.User Manual for LoRaWAN End Nodes.WebHome
Content
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1 1  (% style="text-align:center" %)
2 -[[image:image-20230717144215-1.png||height="438" width="292"]]
2 +[[image:image-20230717152014-10.png||height="575" width="339"]]
3 3  
4 4  
5 5  
6 -
7 7  **Table of Contents:**
8 8  
9 9  {{toc/}}
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14 14  
15 15  = 1. Introduction =
16 16  
17 -== 1.1 What is LHT65N Temperature & Humidity Sensor ==
16 +== 1.1 What is LHT65N LoRaWAN (% style="display:none" %) (%%)Temperature & Humidity Sensor ==
18 18  
19 19  
20 20  (((
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.**
20 +The Dragino LHT65N (% style="display:none" %) (%%)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.**
22 22  )))
23 23  
24 24  (((
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57 57  * Datalog feature (Max 3328 records)
58 58  
59 59  
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 +
85 85  = 2. Connect LHT65N to IoT Server =
86 86  
87 87  == 2.1 How does LHT65N work? ==
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245 245  * 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.)
246 246  
247 247  
249 +
248 248  === 2.4.1 Decoder in TTN V3 ===
249 249  
250 250  
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288 288  * Battery Voltage =0xCBA4&0x3FFF=0x0BA4=2980mV
289 289  
290 290  
293 +
291 291  === 2.4.3 Built-in Temperature ===
292 292  
293 293  
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300 300  * Temperature:  (0xF5C6-65536)/100=-26.18℃
301 301  
302 302  
306 +
303 303  (% style="display:none" %)
304 304  
305 305  === 2.4.4 Built-in Humidity ===
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310 310  * Humidity:    0x025C/10=60.4%
311 311  
312 312  
317 +
313 313  (% style="display:none" %)
314 314  
315 315  === 2.4.5 Ext # ===
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359 359  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:
360 360  )))
361 361  
362 -
363 363  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:480px" %)
364 364  |=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((
365 365  **Size(bytes)**
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413 413  * (% 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)
414 414  
415 415  
420 +
416 416  ==== 2.4.6.3 Ext~=6, ADC Sensor(use with E2 Cable) ====
417 417  
418 418  
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598 598  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:
599 599  )))
600 600  
601 -
602 602  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:480px" %)
603 603  |=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((
604 604  **Size(bytes)**
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652 652  * (% 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)
653 653  
654 654  
659 +
655 655  == 2.5 Show data on Datacake ==
656 656  
657 657  
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1069 1069  * For each success downlink, the PURPLE LED will blink once
1070 1070  
1071 1071  
1077 +
1072 1072  == 2.9 installation ==
1073 1073  
1074 1074  
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1130 1130  
1131 1131  Temperature sensor with 1 meters cable long
1132 1132  
1139 +
1133 1133  **Built-in Temperature Sensor:**
1134 1134  
1135 1135  * Resolution: 0.01 °C
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1159 1159  * Operating Range: 0 ~~ 96 % RH
1160 1160  
1161 1161  
1169 +
1162 1162  = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1163 1163  
1164 1164  
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1230 1230  * **Example 2**: Downlink Payload: 0100003C  ~/~/ Set Transmit Interval (TDC) = 60 seconds
1231 1231  
1232 1232  
1241 +
1233 1233  == 4.2 Set External Sensor Mode ==
1234 1234  
1235 1235  
1236 1236  Feature: Change External Sensor Mode.
1237 1237  
1238 -
1239 1239  (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1240 1240  
1241 -
1242 1242  (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:468px" %)
1243 1243  |(% 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**
1244 1244  |(% 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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1258 1258  * 0xA20702003c: Same as AT+SETCNT=60
1259 1259  
1260 1260  
1268 +
1261 1261  == 4.3 Enable/Disable uplink Temperature probe ID ==
1262 1262  
1263 1263  
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1290 1290  * **0xA801**     **~-~->** AT+PID=1
1291 1291  
1292 1292  
1301 +
1293 1293  == 4.4 Set Password ==
1294 1294  
1295 1295  
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1350 1350  * There is no downlink command to set to Sleep mode.
1351 1351  
1352 1352  
1362 +
1353 1353  == 4.7 Set system time ==
1354 1354  
1355 1355  
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1442 1442  
1443 1443  Feature: Clear flash storage for data log feature.
1444 1444  
1445 -
1446 1446  (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1447 1447  
1448 -
1449 1449  (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:503px" %)
1450 1450  |(% style="background-color:#d9e2f3; color:#0070c0; width:157px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:137px" %)**Function**|(% style="background-color:#d9e2f3; color:#0070c0; width:209px" %)**Response**
1451 1451  |(% style="width:155px" %)AT+CLRDTA |(% style="width:134px" %)Clear date record|(% style="width:209px" %)(((
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1459 1459  * Example: 0xA301  ~/~/  Same as AT+CLRDTA
1460 1460  
1461 1461  
1470 +
1462 1462  == 4.13 Auto Send None-ACK messages ==
1463 1463  
1464 1464  
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1477 1477  * Example: 0x3401  ~/~/  Same as AT+PNACKMD=1
1478 1478  
1479 1479  
1489 +
1480 1480  == 4.14 Modified WMOD command for external sensor TMP117 or DS18B20 temperature alarm(Since firmware 1.3.0) ==
1481 1481  
1482 1482  
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1924 1924  * (% style="color:red" %)**E3**(%%): External Temperature Probe
1925 1925  
1926 1926  
1937 +
1927 1927  = 8. Packing Info =
1928 1928  
1929 1929  
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1938 1938  * Device Weight: 120.5g
1939 1939  
1940 1940  
1952 +
1941 1941  = 9. Reference material =
1942 1942  
1943 1943  
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1944 1944  * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0]]
1945 1945  
1946 1946  
1959 +
1947 1947  = 10. FCC Warning =
1948 1948  
1949 1949  
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