Changes for page LHT65N -- Manual do sensor de temperatura e umidade LoRaWAN

Last modified by Xiaoling on 2023/07/18 10:12

From 185.3 to 185.4 From 189.13 to 190.1

From version 185.4

edited by Xiaoling
on 2022/06/29 14:02

Change comment: There is no comment for this version

To version 189.13

edited by Xiaoling
on 2022/08/08 17:01

Change comment: There is no comment for this version

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@@ -1,5 +1,5 @@
  (% style="text-align:center" %)
--[[image:image-20220613162008-1.png||_mstalt="428142" height="579" width="379"]]
++[[image:image-20220613162008-1.png||_mstalt="428142" height="510" width="334"]]
@@ -46,6 +46,7 @@
  == 1.2 Features ==
++
  * Wall mountable
  * LoRaWAN v1.0.3 Class A protocol
  * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915
@@ -61,7 +61,6 @@
--
  == 1.3 Specification ==
@@ -89,11 +89,11 @@
--
  = 2. Connect LHT65N to IoT Server =
  == 2.1 How does LHT65N work? ==
++
  (((
  LHT65N is configured as LoRaWAN OTAA Class A mode by default. Each LHT65N is shipped with a worldwide unique set of OTAA keys. To use LHT65N in a LoRaWAN network, first, we need to put the OTAA keys in LoRaWAN Network Server and then activate LHT65N.
  )))
@@ -103,8 +103,10 @@
  )))
++
  == 2.2 How to Activate LHT65N? ==
++
  (((
  The LHT65N has two working modes:
  )))
@@ -129,6 +129,7 @@
  == 2.3 Example to join LoRaWAN network ==
++
  (% _msthash="315240" _msttexthash="9205482" _mstvisible="1" class="wikigeneratedid" %)
  This section shows an example of how to join the TTN V3 LoRaWAN IoT server. Use with other LoRaWAN IoT servers is of a similar procedure.
@@ -144,6 +144,7 @@
  === 2.3.1 Step 1: Create Device n TTN ===
++
  (((
  Create a device in TTN V3 with the OTAA keys from LHT65N.
  )))
@@ -168,9 +168,10 @@
  [[image:image-20220522232954-5.png||_mstalt="431847" _mstvisible="3"]]
--Note: LHT65N use same payload as LHT65.
++(% style="color:red" %)**Note: LHT65N use same payload as LHT65.**
++
  [[image:image-20220522233026-6.png||_mstalt="429403" _mstvisible="3"]]
@@ -184,6 +184,7 @@
  === 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
++
  (((
  Use ACT button to activate LHT65N and it will auto-join to the TTN V3 network. After join success, it will start to upload sensor data to TTN V3 and user can see in the panel.
  )))
@@ -195,6 +195,7 @@
  == 2.4 Uplink Payload ==
++
  (((
  The uplink payload includes totally 11 bytes. Uplink packets use FPORT=2 and (% _mstvisible="3" style="color:#4f81bd" %)**every 20 minutes**(%%) send one uplink by default.
  )))
@@ -269,14 +269,14 @@
  * The First 6 bytes: has fix meanings for every LHT65N.
  * The 7th byte (EXT #): defines the external sensor model.
--* 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.)
++* 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.)
--
  === 2.4.1 Decoder in TTN V3 ===
++
  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.
  Below is the position to put the decoder and LHT65N decoder can be download from here:
@@ -292,6 +292,7 @@
  === 2.4.2 BAT-Battery Info ===
++
  These two bytes of BAT include the battery state and the actually voltage
  [[image:image-20220523152839-18.png||_mstalt="457613" _mstvisible="3"]]
@@ -308,9 +308,9 @@
--
  === 2.4.3 Built-in Temperature ===
++
  [[image:image-20220522235639-2.png||_mstalt="431756" _mstvisible="3" height="138" width="722"]]
  * Temperature:  0x0ABB/100=27.47℃
@@ -322,9 +322,9 @@
--
  === 2.4.4 Built-in Humidity ===
++
  [[image:image-20220522235639-4.png||_mstalt="432484" _mstvisible="3" height="138" width="722"]]
  * Humidity:    0x025C/10=60.4%
@@ -332,9 +332,9 @@
--
  === 2.4.5 Ext # ===
++
  Bytes for External Sensor:
  [[image:image-20220523152822-17.png||_mstalt="454545" _mstvisible="3"]]
@@ -343,6 +343,7 @@
  === 2.4.6 Ext value ===
++
  ==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
@@ -366,6 +366,7 @@
  ==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
++
  (((
  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:
  )))
@@ -479,18 +479,20 @@
  * (% _msthash="504956" _msttexthash="245037" _mstvisible="4" %)**Status & Ext Byte**
--[[image:image-20220523152434-16.png||_mstalt="453921" _mstvisible="3"]]
++(% border="1" cellspacing="8" style="background-color:#ffffcc; color:green; width:520px" %)
++|(% 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]**
++|(% 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)
--* Poll Message Flag:    1: This message is a poll message reply, 0: means this is a normal uplink.
--* 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.
--* 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)
++* (% style="color:blue" %)**Poll Message Flag**:(%%)    1: This message is a poll message reply, 0: means this is a normal uplink.
++* (% 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.
++* (% 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)
--
  ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
++
  In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
  be used to power the external ADC sensor; user can control the power on time for this
@@ -538,6 +538,7 @@
  == 2.5 Show data on Datacake ==
++
  (((
  Datacake IoT platform provides a human-friendly interface to show the sensor data, once we have sensor data in TTN V3, we can use Datacake to connect to TTN V3 and see the data in Datacake. Below are the steps:
  )))
@@ -585,6 +585,7 @@
  == 2.6 Datalog Feature ==
++
  (((
  Datalog Feature is to ensure IoT Server can get all sampling data from Sensor even if the LoRaWAN network is down. For each sampling, LHT65N will store the reading for future retrieving purposes. There are two ways for IoT servers to get datalog from LHT65N.
  )))
@@ -593,15 +593,17 @@
  === 2.6.1 Ways to get datalog via LoRaWAN ===
++
  There are two methods:
--1.  IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specify time range.
--1.  Set [[PNACKMD=1>>||anchor="H4.13AutoSendNone-ACKmessages"]], LHT65N will wait for ACK for every uplink, when there is no LoRaWAN network, LHT65N will store the sensor data, and it will send all messages after network recover.
++1.  IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specifying time range.
++1.  Set [[PNACKMD=1>>||anchor="H4.13AutoSendNone-ACKmessages"]], LHT65N will wait for ACK for every uplink, when there is no LoRaWAN network, LHT65N will store the sensor data, and it will send all messages after the network recovery.
++Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
++[[image:image-20220703111700-2.png||height="381" width="1119"]]
--
  === 2.6.2 Unix TimeStamp ===
@@ -624,6 +624,7 @@
  === 2.6.3 Set Device Time ===
++
  (((
  There are two ways to set device's time:
  )))
@@ -641,7 +641,7 @@
  )))
  (((
--(% style="color:red" %)Note: LoRaWAN Server need to support LoRaWAN v1.0.3(MAC v1.0.3) or higher to support this MAC command feature, Chirpstack,TTN V3 v3 and loriot support but TTN V3 v2 doesn’t support. If server doesn’t support this command, it will through away uplink packet with this command, so user will lose the packet with time request for TTN V3 v2 if SYNCMOD=1.
++(% style="color:red" %)**Note: LoRaWAN Server need to support LoRaWAN v1.0.3(MAC v1.0.3) or higher to support this MAC command feature, Chirpstack,TTN V3 v3 and loriot support but TTN V3 v2 doesn't support. If server doesn't support this command, it will through away uplink packet with this command, so user will lose the packet with time request for TTN V3 v2 if SYNCMOD=1.**
  )))
  (((
@@ -660,6 +660,7 @@
  === 2.6.4 Poll sensor value ===
++
  User can poll sensor value based on timestamps from the server. Below is the downlink command.
  [[image:image-20220523152302-15.png||_mstalt="451581" _mstvisible="3"]]
@@ -677,6 +677,7 @@
  === 2.6.5 Datalog Uplink payload ===
++
  (% _msthash="315267" _msttexthash="2245087" _mstvisible="1" %)
  The Datalog poll reply uplink will use below payload format.
@@ -683,6 +683,9 @@
  (% _mstvisible="1" %)
  (((
  (% _mstvisible="2" %)
++
++
++(% _mstvisible="2" %)
  (% _msthash="506080" _msttexthash="451581" _mstvisible="4" %)**Retrieval data payload**
  )))
@@ -945,7 +945,7 @@
  (% _mstvisible="1" %)
  (((
  (% _msthash="506083" _msttexthash="737269" _mstvisible="2" style="text-align: left;" %)
--          Stop time 60066DA7= time 21/1/19 05:27:(% _msthash="903005" _msttexthash="9672" _mstvisible="2" %)03
++                Stop time 60066DA7= time 21/1/19 05:27:(% _msthash="903005" _msttexthash="9672" _mstvisible="2" %)03
  )))
  (% _mstvisible="1" %)
@@ -1007,12 +1007,15 @@
  == 2.7 Alarm Mode ==
++
  (((
  when the device is in alarm mode, it checks the built-in sensor temperature for a short time. if the temperature exceeds the preconfigured range, it sends an uplink immediately.
  )))
  (((
--(% style="color:red" %)Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.
++(% style="color:red" %)**Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.**
++
++
  )))
  (((
@@ -1042,10 +1042,25 @@
  )))
  )))
++(% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
++Total bytes: 8 bytes
++**Example:**AA0100010001003C
++
++WMOD=01
++
++CITEMP=0001
++
++TEMPlow=0001
++
++TEMPhigh=003C
++
++
++
  == 2.8 LED Indicator ==
++
  The LHT65 has a triple color LED which for easy showing different stage .
  While user press ACT button, the LED will work as per LED status with ACT button.
@@ -1060,9 +1060,9 @@
--
  == 2.9 installation ==
++
  (% _mstvisible="1" %)
  [[image:image-20220516231650-1.png||_mstalt="428597" _mstvisible="3" height="436" width="428"]]
@@ -1072,8 +1072,10 @@
  == 3.1 E2 Extension Cable ==
++
  [[image:image-20220619092222-1.png||height="182" width="188"]][[image:image-20220619092313-2.png||height="182" width="173"]]
++
  **1m long breakout cable for LHT65N. Features:**
  * (((
@@ -1090,6 +1090,9 @@
  )))
  * (((
  Exposed All pins from the LHT65N Type-C connector.
++
++
++
  )))
  [[image:image-20220619092421-3.png||height="371" width="529"]]
@@ -1114,9 +1114,9 @@
--
  = 4. Configure LHT65N via AT command or LoRaWAN downlink =
++
  (((
  Use can configure LHT65N via AT Command or LoRaWAN Downlink.
  )))
@@ -1161,10 +1161,13 @@
  )))
++
  == 4.1 Set Transmit Interval Time ==
++
  Feature: Change LoRaWAN End Node Transmit Interval.
++
  (% style="color:#4f81bd" %)**AT Command: AT+TDC**
  [[image:image-20220523150701-2.png||_mstalt="427453" _mstvisible="3"]]
@@ -1183,11 +1183,12 @@
--
  == 4.2 Set External Sensor Mode ==
++
  Feature: Change External Sensor Mode.
++
  (% style="color:#4f81bd" %)**AT Command: AT+EXT**
  [[image:image-20220523150759-3.png||_mstalt="432146" _mstvisible="3"]]
@@ -1208,9 +1208,9 @@
--
  == 4.3 Enable/Disable uplink Temperature probe ID ==
++
  (((
  Feature: If PID is enabled, device will send the temperature probe ID on:
  )))
@@ -1224,6 +1224,8 @@
  (((
  PID is default set to disable (0)
++
++
  )))
  (% style="color:#4f81bd" %)**AT Command:**
@@ -1239,11 +1239,12 @@
--
  == 4.4 Set Password ==
++
  Feature: Set device password, max 9 digits
++
  (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
  [[image:image-20220523151052-5.png||_mstalt="428623" _mstvisible="3"]]
@@ -1257,8 +1257,10 @@
  == 4.5 Quit AT Command ==
++
  Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
++
  (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
  [[image:image-20220523151132-6.png||_mstalt="428649" _mstvisible="3"]]
@@ -1272,6 +1272,7 @@
  == 4.6 Set to sleep mode ==
++
  Feature: Set device to sleep mode
  * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
@@ -1289,11 +1289,12 @@
--
  == 4.7 Set system time ==
++
  Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
++
  (% _msthash="315253" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
  [[image:image-20220523151253-8.png||_mstalt="430677" _mstvisible="3"]]
@@ -1307,6 +1307,7 @@
  == 4.8 Set Time Sync Mode ==
++
  (((
  Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
  )))
@@ -1313,6 +1313,8 @@
  (((
  SYNCMOD is set to 1 by default. If user want to set a different time from LoRaWAN server, user need to set this to 0.
++
++
  )))
  (% _msthash="506058" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
@@ -1329,8 +1329,10 @@
  == 4.9 Set Time Sync Interval ==
++
  Feature: Define System time sync interval. SYNCTDC default value: 10 days.
++
  (% _msthash="315256" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
  [[image:image-20220523151411-10.png||_mstalt="449696" _mstvisible="3"]]
@@ -1344,8 +1344,10 @@
  == 4.10 Print data entries base on page. ==
++
  Feature: Print the sector data from start page to stop page (max is 416 pages).
++
  (% _msthash="315258" _msttexthash="264953" style="color:#4f81bd" %)**AT Command: AT+PDTA**
  [[image:image-20220523151450-11.png||_mstalt="451035" _mstvisible="3"]]
@@ -1359,8 +1359,10 @@
  == 4.11 Print last few data entries. ==
++
  Feature: Print the last few data entries
++
  (% _msthash="315260" _msttexthash="288522" style="color:#4f81bd" %)**AT Command: AT+PLDTA**
  [[image:image-20220523151524-12.png||_mstalt="452101" _mstvisible="3"]]
@@ -1374,6 +1374,7 @@
  == 4.12 Clear Flash Record ==
++
  Feature: Clear flash storage for data log feature.
@@ -1389,12 +1389,13 @@
--
  == 4.13 Auto Send None-ACK messages ==
++
  (% _msthash="315394" _msttexthash="51837149" _mstvisible="1" %)
  Feature: LHT65N will wait for ACK for each uplink, If LHT65N doesn't get ACK from the IoT server, it will consider the message doesn't arrive server and store it. LHT65N keeps sending messages in normal periodically. Once LHT65N gets ACK from a server, it will consider the network is ok and start to send the not-arrive message.
++
  (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
  (% _msthash="315396" _msttexthash="734682" _mstvisible="1" %)
@@ -1411,11 +1411,11 @@
--
  = 5. Battery & How to replace =
  == 5.1 Battery Type ==
++
  (((
  (((
  LHT65N is equipped with a 2400mAH Li-MnO2 (CR17505) battery . The battery is an un-rechargeable battery with low discharge rate targeting for up to 8~~10 years use. This type of battery is commonly used in IoT devices for long-term running, such as water meters.
@@ -1436,8 +1436,10 @@
  The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
++
  == 5.2 Replace Battery ==
++
  LHT65N has two screws on the back, Unscrew them, and changing the battery inside is ok. The battery is a general CR17450 battery. Any brand should be ok.
  [[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"]]
@@ -1445,6 +1445,7 @@
  == 5.3 Battery Life Analyze ==
++
  (((
  Dragino battery-powered products are all run in Low Power mode. User can check the guideline from this link to calculate the estimated battery life:
  [[https:~~/~~/www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf>>https://www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf]]
@@ -1462,8 +1462,10 @@
  = 6. FAQ =
++
  == 6.1 How to use AT Command? ==
++
  LHT65N supports AT Command set.User can use a USB to TTL adapter plus the Program Cable to connect to LHT65 for using AT command, as below.
  [[image:image-20220530085651-1.png||_mstalt="429949"]]
@@ -1682,40 +1682,43 @@
  AT+PID:                Get or set the PID
++
  == 6.2 Where to use AT commands and Downlink commands ==
--(% _msthash="506131" _msttexthash="14585714" %)
--AT commands：
++**AT commands：**
++
  [[image:image-20220620153708-1.png||height="603" width="723"]]
--(% _msthash="506132" _msttexthash="337922" %)
--Downlink commands:
++**Downlink commands:**
--(% _msthash="506133" _msttexthash="33046" %)
--**TTN:**
++
++(% style="color:blue" %)**TTN:**
++
  [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
--(% _msthash="506134" _msttexthash="11113791" %)
--**Helium：**
++(% style="color:blue" %)**Helium：**
++
  [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
--(% _msthash="506135" _msttexthash="4159844" %)
--**Chirpstack:The downlink window will not be displayed until the network is accessed**
++(% style="color:blue" %)**Chirpstack: The downlink window will not be displayed until the network is accessed**
++
++
  [[image:image-20220615094850-6.png||_mstalt="433082"]]
++
  [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
--(% _msthash="506136" _msttexthash="39286" %)
--**Aws:**
++(% style="color:blue" %)**Aws:**
++
  [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
@@ -1722,6 +1722,7 @@
  == 6.3 How to change the uplink interval？ ==
++
  [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/How%20to%20set%20the%20transmit%20time%20interval/>>url:http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20set%20the%20transmit%20time%20interval/||_msthash="506137" _msttexthash="5712018"]]
@@ -1728,6 +1728,7 @@
  == 6.4 How to use TTL-USB to connect a PC to input AT commands? ==
++
  [[image:image-20220615153355-1.png]]
  [[image:1655802313617-381.png]]
@@ -1784,13 +1784,16 @@
  Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
++
  == 6.6 Using USB-TYPE-C to connect to the computer using the AT command ==
++
  [[image:image-20220623110706-1.png]]
  [[image:image-20220623112117-4.png||height="459" width="343"]]
++
  (((
  In PC, User needs to set serial tool(such as [[**putty**>>https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to (% style="color:green" %)**9600** (%%)to access to access serial console for LHT65N. The AT commands are disable by default and need to enter password (default:(% style="color:green" %)**123456**(% style="color:red" %))(%%) to active it. Timeout to input AT Command is 5 min, after 5-minute, user need to input password again. User can use AT+DISAT command to disable AT command before timeout.
  )))
@@ -1801,10 +1801,13 @@
  [[image:image-20220615154519-3.png||height="672" width="807"]]
++
  == 6.7 How to use  USB-TYPE-C to connect PC to upgrade firmware? ==
++
  [[image:image-20220623110706-1.png]]
++
  (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
  [[image:image-20220615170542-5.png]]
@@ -1821,6 +1821,7 @@
  (% _msthash="506146" _msttexthash="52173160" %)
  Press and hold the start key to restart and enter  (% _mstvisible="1" %)bootlaod(%%) mode.
++
  (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
  [[image:image-20220615171334-6.png]]
@@ -1837,6 +1837,7 @@
  Finally,restart reset device again
++
  = 7. Order Info =
@@ -1866,8 +1866,6 @@
--
--
  = 8. Packing Info =
@@ -1883,18 +1883,16 @@
--
--
  = 9. Reference material =
++
  * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
--
--
  = 10. FCC Warning =
++
  This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
  (1) This device may not cause harmful interference；

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Changes for page LHT65N -- Manual do sensor de temperatura e umidade LoRaWAN

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