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Last modified by Mengting Qiu on 2025/07/03 14:48
From version 148.11
edited by Xiaoling
on 2022/06/17 15:06
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To version 168.2
edited by Xiaoling
on 2022/06/21 09:22
Change comment: There is no comment for this version

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Title
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1 -LHT65N LoRaWAN Temperature & Humidity Sensor Manual
1 +LHT52 - LoRaWAN Temperature & Humidity Sensor User 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-20220613162008-1.png||_mstalt="428142" height="579" width="379"]]
2 +[[image:1655774244188-589.png]]
3 3  
4 4  
5 5  
6 6  
7 -
8 8  (% _mstvisible="1" %)
9 9  (% _msthash="315238" _msttexthash="18964465" _mstvisible="3" %)**Table of Contents：**
10 10  
11 -{{toc/}}
12 12  
13 13  
14 14  
15 15  
14 +
15 +
16 16  (% _mstvisible="1" %)
17 17  = (% _msthash="277498" _msttexthash="253045" _mstvisible="3" %)1. Introduction(%%) =
18 18  
19 19  (% _mstvisible="1" %)
20 -== (% _msthash="1532895" _msttexthash="1426958" _mstvisible="3" %)1.1 What is LHT65N Temperature & Humidity Sensor(%%) ==
20 +== (% _msthash="1532895" _msttexthash="1426958" _mstvisible="3" %)1.1 What is LHT52 Temperature & Humidity Sensor(%%) ==
21 21  
22 22  (% _mstvisible="1" %)
23 23  (((
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24 24  (% _msthash="506051" _msttexthash="24333127" _mstvisible="2" %)
25 25  
26 26  
27 -(% _msthash="506051" _msttexthash="24333127" _mstvisible="2" %)
28 -The Dragino LHT65N Temperature & Humidity sensor is a Long Range LoRaWAN Sensor. It includes a (% _mstvisible="4" style="color:#4f81bd" %)**built-in Temperature & Humidity sensor**(%%) and has an external sensor connector to connect to an external (% _mstvisible="4" style="color:#4f81bd" %)**Temperature Sensor**(% _mstvisible="3" %)**.**
29 -)))
27 +The Dragino LHT52 Temperature & Humidity sensor is a Long Range LoRaWAN Sensor. It includes a **built-in Temperature & Humidity sensor** and has a USB Type-C sensor connector to connect to external sensors such as external Temperature Sensor.
30 30  
31 -(% _mstvisible="1" %)
32 -(((
33 -(% _msthash="506052" _msttexthash="66005810" _mstvisible="2" %)
34 -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.
35 -)))
36 36  
37 -(% _mstvisible="1" %)
38 -(((
39 -(% _msthash="506053" _msttexthash="4298047" _mstvisible="2" %)
40 -LHT65N has a built-in 2400mAh non-chargeable battery which can be used for up to 10 years*.
41 -)))
30 +LHT52 **senses environment temperature and humidity** and send these values via long-range wireless LoRaWAN protocol. It targets professional wireless sensor network applications such as food service, smart metering, smart cities, building automation, and so on.
42 42  
43 -(% _mstvisible="1" %)
44 -(((
45 -(% _msthash="506054" _msttexthash="6016374" _mstvisible="2" %)
46 -LHT65N is full compatible with LoRaWAN v1.0.3 Class A protocol, it can work with a standard LoRaWAN gateway.
47 -)))
48 48  
49 -(% _mstvisible="1" %)
50 -(((
51 -(% _msthash="506055" _msttexthash="17023136" _mstvisible="2" %)
52 -LHT65N supports (% _mstvisible="4" 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.
33 +LHT52 **supports 2 x AAA batteries **and works for a long time up to several years. Use can replace the batteries easily after they are finished.
34 +
35 +
36 +LHT52 is fully compatible with LoRaWAN v1.0.3 protocol, it can work with standard LoRaWAN gateway.
37 +
38 +
39 +LHT52 supports** Datalog feature** to make sure users won’t miss sensor data. It records sensor value for every uplink. These values can be retrieved by LoRaWAN server via downlink command.
40 +
41 +
42 +LHT52 supports** temperature alarm feature**. It can uplink alarm in a short interval while temperature exceeds preset limits.
43 +
44 +
45 +*Battery life depends how often to send data, please see [[battery analyzer>>path:#Battery]].
46 +
47 +(% _msthash="506051" _msttexthash="24333127" _mstvisible="2" %)
48 +[[image:1655774519494-861.png]]
53 53  )))
54 54  
55 55  (% _mstvisible="1" %)
56 56  (((
57 57  (% _msthash="506056" _msttexthash="5557097" _mstvisible="2" %)
58 -*The actual battery life depends on how often to send data, please see the battery analyzer chapter.
59 -
60 -(% _msthash="506056" _msttexthash="5557097" _mstvisible="2" %)
61 61  
62 62  )))
63 63  
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77 77  * Tri-color LED to indicate working status
78 78  * Datalog feature
79 79  
80 -
81 -
82 -
83 83  (% _mstvisible="1" %)
84 84  == (% _msthash="323570" _msttexthash="297635" _mstvisible="3" %)1.3 Specification(%%) ==
85 85  
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368 368  * The 7th byte (EXT #): defines the external sensor model.
369 369  * 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.)
370 370  
371 -
372 -
373 -
374 374  (% _mstvisible="1" %)
375 375  === (% _msthash="360269" _msttexthash="333762" _mstvisible="3" %)2.4.1 Decoder in TTN V3(%%) ===
376 376  
... ... @@ -407,9 +407,6 @@
407 407  * BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
408 408  * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
409 409  
410 -
411 -
412 -
413 413  (% _mstvisible="1" %)
414 414  === (% _msthash="600769" _msttexthash="565838" _mstvisible="3" %)2.4.3 Built-in Temperature(%%) ===
415 415  
... ... @@ -480,7 +480,6 @@
480 480  )))
481 481  
482 482  
483 -
484 484  (% _mstvisible="1" %)
485 485  ==== (% _msthash="1389752" _msttexthash="1234766" _mstvisible="3" %)2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp(%%) ====
486 486  
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601 601  * 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.
602 602  * 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)
603 603  
587 +==== (% _msthash="1389752" _msttexthash="1234766" _mstvisible="3" %)2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable)(%%) ====
588 +
589 +In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
590 +
591 +be used to power the external ADC sensor; user can control the power on time for this
592 +
593 +sensor by setting:
594 +
595 +AT+EXT=6,timeout  (% _msthash="506085" _msttexthash="8782189" _mstvisible="3" style="color:red" %)Time to power this sensor, from 0 ~~ 65535ms
596 +
597 +
598 +
604 604  (% _mstvisible="1" %)
605 605  == (% _msthash="487097" _msttexthash="454818" _mstvisible="3" %)2.5 Show data on Datacake(%%) ==
606 606  
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1161 1161  = (% _msthash="401388" _msttexthash="566956" _mstvisible="3" %)3. S(% _msthash="903005" _msttexthash="1647204" _mstvisible="2" %)ensors(% _msthash="401388" _msttexthash="40417" _mstvisible="3" %) and A(% _msthash="903005" _msttexthash="1647204" _mstvisible="2" %)ccessories(%%) =
1162 1162  
1163 1163  (% _msthidden="1" _mstvisible="1" style="text-align: left;" %)
1159 +== (% _msthash="903005" _msttexthash="1647204" _mstvisible="2" %)3.1(% _msthash="487110" _msttexthash="455390" %) E2 Extension Cable(%%) ==
1160 +
1161 +[[image:image-20220619092222-1.png||height="182" width="188"]][[image:image-20220619092313-2.png||height="182" width="173"]]
1162 +
1163 +1m long breakout cable for LHT65N
1164 +
1165 +[[image:image-20220619092421-3.png||height="371" width="529"]]
1166 +
1167 +
1168 +
1169 +(% _msthidden="1" _mstvisible="1" style="text-align: left;" %)
1164 1164  == (% _msthash="903005" _msttexthash="1647204" _mstvisible="2" %)3.1(% _msthash="487110" _msttexthash="455390" %) E3 Temperature Probe(%%) ==
1165 1165  
1166 1166  (% _mstvisible="1" %)
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1653 1653  (% _mstvisible="1" %)
1654 1654  [[image:image-20220515075440-2.png||_mstalt="429546" _mstvisible="3" height="338" width="272"]][[image:image-20220515075625-3.png||_mstalt="431574" _mstvisible="3" height="193" width="257"]]
1655 1655  
1662 +
1656 1656  (% _mstvisible="1" %)
1657 1657  == (% _msthash="494650" _msttexthash="462241" _mstvisible="3" %)5.3 Battery Life Analyze(%%) ==
1658 1658  
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1915 1915  (% _msthash="506131" _msttexthash="14585714" %)
1916 1916  AT commands：
1917 1917  
1918 -[[image:image-20220615092034-1.png||_mstalt="428870"]]
1925 +[[image:image-20220620153708-1.png||height="603" width="723"]]
1919 1919  
1920 1920  (% _msthash="506132" _msttexthash="337922" %)
1921 1921  Downlink commands:
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1924 1924  (% _msthash="506133" _msttexthash="33046" %)
1925 1925  **TTN:**
1926 1926  
1927 -[[image:image-20220615092124-2.png||_mstalt="429221" height="843" width="893"]]
1934 +[[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
1928 1928  
1929 1929  
1930 1930  (% _msthash="506134" _msttexthash="11113791" %)
1931 1931  **Helium：**
1932 1932  
1933 -[[image:image-20220615092551-3.png||_mstalt="430794" height="556" width="1097"]]
1940 +[[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
1934 1934  
1935 1935  
1936 1936  (% _msthash="506135" _msttexthash="4159844" %)
... ... @@ -1938,13 +1938,13 @@
1938 1938  
1939 1939  [[image:image-20220615094850-6.png||_mstalt="433082"]]
1940 1940  
1941 -[[image:image-20220615094904-7.png||_mstalt="433485" height="329" width="1067"]]
1948 +[[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
1942 1942  
1943 1943  
1944 1944  (% _msthash="506136" _msttexthash="39286" %)
1945 1945  **Aws:**
1946 1946  
1947 -[[image:image-20220615092939-4.png||_mstalt="434460" height="532" width="1062"]]
1954 +[[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1948 1948  
1949 1949  
1950 1950  == (% _msthash="1220570" _msttexthash="33199257" %)6.3 How to change the uplink interval？(%%) ==
... ... @@ -1957,6 +1957,8 @@
1957 1957  
1958 1958  [[image:image-20220615153355-1.png]]
1959 1959  
1967 +[[image:image-20220620154900-5.jpeg||height="427" width="570"]]
1968 +
1960 1960  (% style="background-color:yellow" %)**1 < - -> GND  < - ->  Black**
1961 1961  
1962 1962  (% style="background-color:yellow" %)**5 < - ->  RXD  < - ->  White**
... ... @@ -1963,9 +1963,10 @@
1963 1963  
1964 1964  (% style="background-color:yellow" %)**9 < - ->  TXD  < - ->  Green**
1965 1965  
1966 -[[image:image-20220615153914-2.jpeg||height="608" width="456"]]
1967 1967  
1976 +To switch from download mode to command mode, press reset key
1968 1968  
1978 +
1969 1969  (((
1970 1970  (% _msthash="736728" _msttexthash="67213055" %)
1971 1971  (((
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1977 1977  (% _msthash="736729" _msttexthash="1907009" %)
1978 1978  Input password and ATZ to activate LHT65N,As shown below:
1979 1979  
1980 -[[image:image-20220615154519-3.png]]
1990 +[[image:image-20220615154519-3.png||height="672" width="807"]]
1981 1981  
1982 1982  
1983 1983  )))
1984 1984  
1985 -
1986 1986  == 6.5 How to use TTL-USB to connect PC to upgrade firmware? ==
1987 1987  
1997 +
1988 1988  [[image:image-20220615153355-1.png]]
1989 1989  
2000 +(% style="background-color:yellow" %)**1 < - -> GND  < - ->  Black**
2001 +
1990 1990  (% style="background-color:yellow" %)**4  < - ->  3.3V  < - ->  Blue**
1991 1991  
1992 1992  (% style="background-color:yellow" %)**5 < - ->  RXD  < - ->  White**
... ... @@ -1993,9 +1993,13 @@
1993 1993  
1994 1994  (% style="background-color:yellow" %)**9 < - ->  TXD  < - ->  Green**
1995 1995  
1996 -Use after connection， ground wire（1 < - -> GND  < - ->  Black） for 1s and then pull it out.Then restart the device.
2008 +[[image:image-20220620160241-6.jpeg||height="428" width="571"]]
1997 1997  
2010 +Press reset after connecting the 4boot cable to enter the download mode.
1998 1998  
2012 +[[image:image-20220620160516-7.png||height="435" width="435"]]
2013 +
2014 +
1999 1999  (% _mstmutation="1" %)**Step1**(%%): Install TremoProgrammer  first.
2000 2000  
2001 2001  [[image:image-20220615170542-5.png]]
... ... @@ -2013,7 +2013,7 @@
2013 2013  
2014 2014  (% _istranslated="1" _mstmutation="1" %)**Step4：**(%%)Click Start
2015 2015  
2016 -
2032 +[[image:image-20220620160723-8.png]]
2017 2017  )))
2018 2018  
2019 2019  (% _mstvisible="1" %)
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2085 2085  (% _msthash="903335" _msttexthash="720135" _mstvisible="4" %)
2086 2086  (% style="color:red" %)**E3**(%%): External Temperature Probe
2087 2087  
2088 -
2089 -(% _msthash="903335" _msttexthash="720135" _mstvisible="4" %)
2090 2090  
2091 2091  )))
2092 2092  
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2135 2135  (% _mstvisible="3" %)
2136 2136  (((
2137 2137  
2138 -
2139 -(% _msthash="903342" _msttexthash="227084" _mstvisible="4" %)
2140 -
2141 2141  )))
2142 2142  
2143 2143  = (% _msthash="184782" _msttexthash="16007771" %)9. Reference material(%%) =
... ... @@ -2144,8 +2144,6 @@
2144 2144  
2145 2145  * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/home/Products_Public_Document/LoRaWAN%20End%20Node/LHT65N%20Temperature%20%26%20Humidity%20Sensor||_msthash="504975" _msttexthash="51420512"]]
2146 2146  
2147 -
2148 -
2149 2149  = (% _msthash="216320" _msttexthash="10002096" %)10. (%%)FCC Warning =
2150 2150  
2151 2151  (% _mstvisible="1" %)
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