Changes for page RS485-BL – Waterproof RS485 to LoRaWAN Converter

Last modified by Xiaoling on 2025/04/23 15:57

From 32.5 to 32.4 From 40.20 to 40.19

From version 40.19

edited by Xiaoling
on 2022/06/06 09:40

Change comment: There is no comment for this version

To version 32.5

edited by Xiaoling
on 2022/06/02 09:41

Change comment: There is no comment for this version

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@@ -94,8 +94,6 @@
  * 127 dB Dynamic Range RSSI.
  * Automatic RF Sense and CAD with ultra-fast AFC.
--
--
  == 1.3 Features ==
  * LoRaWAN Class A & Class C protocol (default Class A)
@@ -107,8 +107,6 @@
  * Support Modbus protocol
  * Support Interrupt uplink
--
--
  == 1.4 Applications ==
  * Smart Buildings & Home Automation
@@ -118,8 +118,6 @@
  * Smart Cities
  * Smart Factory
--
--
  == 1.5 Firmware Change log ==
  [[RS485-BL Image files – Download link and Change log>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/RS485-BL/Firmware/||style="background-color: rgb(255, 255, 255);"]]
@@ -322,8 +322,6 @@
  )))
  )))
--
--
  === 3.3.2 Configure sensors ===
  (((
@@ -729,7 +729,7 @@
  )))
  (((
--**}**
++}
  )))
@@ -747,12 +747,10 @@
  There are two kinds of Commands:
--* (% style="color:#4f81bd" %)**Common Commands**(%%): They should be available for each sensor, such as: change uplink interval, reset device. For firmware v1.3, user can find what common commands it supports: [[AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
++* (% style="color:#4f81bd" %)**Common Commands**(%%): They should be available for each sensor, such as: change uplink interval, reset device. For firmware v1.3, user can find what common commands it supports: [[End Device AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
  * (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for RS485-BL.  User can see these commands below:
--
--
  === 3.5.1 Common Commands: ===
  They should be available for each of Dragino Sensors, such as: change uplink interval, reset device. For firmware v1.3, user can find what common commands it supports: [[End Device AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
@@ -760,6 +760,7 @@
  === 3.5.2 Sensor related commands: ===
++====   ====
  ==== **Choose Device Type (RS485 or TTL)** ====
@@ -834,7 +834,6 @@
--
  ==== **Set Payload version** ====
  This is the first byte of the uplink payload. RS485-BL can connect to different sensors. User can set the PAYVER field to tell server how to decode the current payload.
@@ -931,6 +931,7 @@
  * **AT+MBFUN=0**: Disable Modbus fast reading.
++
  **Example:**
  * AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2 are not configure (0,0,0).
@@ -979,100 +979,86 @@
     **0xAA 01 03 E8**  ~-~-> Same as **AT+CMDDL1=1000 ms**
++==== [[Uplink>>path:#downlink_A8]] payload mode ====
--==== **Uplink payload mode** ====
--
  Define to use one uplink or multiple uplinks for the sampling.
--The use of this command please see: [[Compose Uplink payload>>||anchor="H3.3.4Composetheuplinkpayload"]]
++The use of this command please see: [[Compose Uplink payload>>path:#DataUP]]
--* **AT Command:**
++* AT Command:
--(% class="box infomessage" %)
--(((
--**AT+DATAUP=0**
--)))
++AT+DATAUP=0
--(% class="box infomessage" %)
--(((
--**AT+DATAUP=1**
--)))
++AT+DATAUP=1
--* **Downlink Payload:**
++* Downlink Payload:
--**0xAD 00**   **~-~->** Same as AT+DATAUP=0
++0xAD 00   à Same as AT+DATAUP=0
--**0xAD 01**   **~-~->** Same as AT+DATAUP=1
++0xAD 01   à Same as AT+DATAUP=1
++==== Manually trigger an Uplink ====
--==== **Manually trigger an Uplink** ====
--
  Ask device to send an uplink immediately.
--* **Downlink Payload:**
++* Downlink Payload:
--**0x08 FF**, RS485-BL will immediately send an uplink.
++0x08 FF, RS485-BL will immediately send an uplink.
++==== Clear RS485 Command ====
--==== **Clear RS485 Command** ====
--
  The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.
--* **AT Command:**
++* AT Command:
--(% style="color:#037691" %)**AT+CMDEAR=mm,nn** (%%)    mm: start position of erase ,nn: stop position of erase Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
++**AT+CMDEAR=mm,nn**   mm: start position of erase ,nn: stop position of erase
++Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
++
  Example screen shot after clear all RS485 commands.
++
  The uplink screen shot is:
--[[image:1654134704555-320.png]]
++[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image023.png]]
--* **Downlink Payload:**
++* Downlink Payload:
--**0x09 aa bb**  same as AT+CMDEAR=aa,bb
++0x09 aa bb  same as AT+CMDEAR=aa,bb
++==== Set Serial Communication Parameters ====
--==== **Set Serial Communication Parameters** ====
--
  Set the Rs485 serial communication parameters:
--* **AT Command:**
++* AT Command:
  Set Baud Rate:
--(% class="box infomessage" %)
--(((
--**AT+BAUDR=9600**    ~/~/ Options: (1200,2400,4800,14400,19200,115200)
--)))
++AT+BAUDR=9600    ~/~/ Options: (1200,2400,4800,14400,19200,115200)
--Set UART Parity
--(% class="box infomessage" %)
--(((
--**AT+PARITY=0**    ~/~/ Option: 0: no parity, 1: odd parity, 2: even parity
--)))
++Set UART parity
++AT+PARITY=0    ~/~/ Option: 0: no parity, 1: odd parity, 2: even parity
++
++
  Set STOPBIT
--(% class="box infomessage" %)
--(((
--**AT+STOPBIT=0**    ~/~/ Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits
--)))
++AT+STOPBIT=0    ~/~/ Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits
--* **Downlink Payload:**
++* Downlink Payload:
--**A7 01 aa bb**: Same  AT+BAUDR=hex(aa bb)*100
++A7 01 aa bb: Same  AT+BAUDR=hex(aa bb)*100
--**Example:**
++Example:
  * A7 01 00 60   same as AT+BAUDR=9600
  * A7 01 04 80     same as AT+BAUDR=115200
@@ -1082,192 +1082,180 @@
  A7 03 aa: Same as  AT+STOPBIT=aa  (aa value: 00 , 01 or 02)
++==== Control output power duration ====
--==== **Control output power duration** ====
--
  User can set the output power duration before each sampling.
--* **AT Command:**
++* AT Command:
--**Example:**
++Example:
--**AT+3V3T=1000**  ~/~/ 3V3 output power will open 1s before each sampling.
++AT+3V3T=1000 ~/~/ 3V3 output power will open 1s before each sampling.
--**AT+5VT=1000**  ~/~/ +5V output power will open 1s before each sampling.
++AT+5VT=1000 ~/~/ +5V output power will open 1s before each sampling.
--* **LoRaWAN Downlink Command:**
++* LoRaWAN Downlink Command:
--**07 01 aa bb**  Same as AT+5VT=(aa bb)
++07 01 aa bb  Same as AT+5VT=(aa bb)
--**07 02 aa bb**  Same as AT+3V3T=(aa bb)
++07 02 aa bb  Same as AT+3V3T=(aa bb)
--== 3.6 Buttons ==
--(% border="1" style="background-color:#ffffcc; color:green; width:233px" %)
--|=(% style="width: 89px;" %)**Button**|=(% style="width: 141px;" %)**Feature**
--|(% style="width:89px" %)**RST**|(% style="width:141px" %)Reboot RS485-BL
++1.
++11. Buttons
++|**Button**|**Feature**
++|**RST**|Reboot RS485-BL
--== 3.7 +3V3 Output ==
++1.
++11. +3V3 Output
  RS485-BL has a Controllable +3V3 output, user can use this output to power external sensor.
  The +3V3 output will be valid for every sampling. RS485-BL will enable +3V3 output before all sampling and disable the +3V3 after all sampling.
++
  The +3V3 output time can be controlled by AT Command.
++**AT+3V3T=1000**
--(% style="color:#037691" %)**AT+3V3T=1000**
--
--
  Means set +3v3 valid time to have 1000ms. So, the real +3v3 output will actually have 1000ms + sampling time for other sensors.
++
  By default, the AT+3V3T=0. This is a special case, means the +3V3 output is always on at any time
--== 3.8 +5V Output ==
++1.
++11. +5V Output
  RS485-BL has a Controllable +5V output, user can use this output to power external sensor.
  The +5V output will be valid for every sampling. RS485-BL will enable +5V output before all sampling and disable the +5v after all sampling.
++
  The 5V output time can be controlled by AT Command.
++**AT+5VT=1000**
--(% style="color:#037691" %)**AT+5VT=1000**
--
--
  Means set 5V valid time to have 1000ms. So, the real 5V output will actually have 1000ms + sampling time for other sensors.
++
  By default, the AT+5VT=0. If the external sensor which require 5v and require more time to get stable state, user can use this command to increase the power ON duration for this sensor.
--== 3.9 LEDs ==
--(% border="1" style="background-color:#ffffcc; color:green; width:332px" %)
--|=**LEDs**|=(% style="width: 274px;" %)**Feature**
--|**LED1**|(% style="width:274px" %)Blink when device transmit a packet.
++1.
++11. LEDs
++|**LEDs**|**Feature**
++|**LED1**|Blink when device transmit a packet.
--== 3.10 Switch Jumper ==
++1.
++11. Switch Jumper
--(% border="1" style="background-color:#ffffcc; color:green; width:515px" %)
--|=(% style="width: 124px;" %)**Switch Jumper**|=(% style="width: 388px;" %)**Feature**
--|(% style="width:124px" %)**SW1**|(% style="width:388px" %)(((
++|**Switch Jumper**|**Feature**
++|**SW1**|(((
  ISP position: Upgrade firmware via UART
  Flash position: Configure device, check running status.
  )))
--|(% style="width:124px" %)**SW2**|(% style="width:388px" %)(((
++|**SW2**|(((
 V position: set to compatible with 5v I/O.
 .3v position: set to compatible with 3.3v I/O.,
  )))
--**+3.3V**: is always ON
+++3.3V: is always ON
--**+5V**: Only open before every sampling. The time is by default, it is AT+5VT=0.  Max open time. 5000 ms.
+++5V: Only open before every sampling. The time is by default, it is AT+5VT=0.  Max open time. 5000 ms.
++1. Case Study
--= 4. Case Study =
++User can check this URL for some case studies.
--User can check this URL for some case studies: [[APP RS485 COMMUNICATE WITH SENSORS>>doc:Main.Application Note \: Communicate with Different Sensors ----- RS485-LN  RS485-BL.WebHome]]
++[[http:~~/~~/wiki.dragino.com/index.php?title=APP_RS485_COMMUNICATE_WITH_SENSORS>>url:http://wiki.dragino.com/index.php?title=APP_RS485_COMMUNICATE_WITH_SENSORS]]
--= 5. Use AT Command =
--== 5.1 Access AT Command ==
++1. Use AT Command
++11. Access AT Command
++
  RS485-BL supports AT Command set. User can use a USB to TTL adapter plus the 3.5mm Program Cable to connect to RS485-BL to use AT command, as below.
--[[image:1654135840598-282.png]]
++[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image027.png]]
--In PC, User needs to set (% style="color:blue" %)**serial tool**(%%)(such as [[putty>>url:https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to (% style="color:green" %)**9600**(%%) to access to access serial console of RS485-BL. The default password is 123456. Below is the output for reference:
++In PC, User needs to set **serial tool**(such as [[putty>>url:https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to **9600** to access to access serial console of RS485-BL. The default password is 123456. Below is the output for reference:
--[[image:1654136105500-922.png]]
++[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image028.png]]
--More detail AT Command manual can be found at [[AT Command Manual>>||anchor="3.5ConfigureRS485-BLviaATorDownlink"]]
++More detail AT Command manual can be found at [[AT Command Manual>>path:#AT_COMMAND]]
--== 5.2 Common AT Command Sequence ==
--=== 5.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
++1.
++11. Common AT Command Sequence
++111. Multi-channel ABP mode (Use with SX1301/LG308)
++
  If device has not joined network yet:
--(% class="box infomessage" %)
--(((
--**AT+FDR**
--)))
++AT+FDR
--(% class="box infomessage" %)
--(((
--**AT+NJM=0**
--)))
++AT+NJM=0
--(% class="box infomessage" %)
--(((
--**ATZ**
--)))
++ATZ
  If device already joined network:
--(% class="box infomessage" %)
--(((
--**AT+NJM=0**
--)))
++AT+NJM=0
--(% class="box infomessage" %)
--(((
--**ATZ**
--)))
++ATZ
++1.
++11.
++111. Single-channel ABP mode (Use with LG01/LG02)
--=== 5.5.2 Single-channel ABP mode (Use with LG01/LG02) ===
++AT+FDR   Reset Parameters to Factory Default, Keys Reserve
++AT+NJM=0 Set to ABP mode
--(% style="background-color:#dcdcdc" %)**AT+FDR** (%%)  Reset Parameters to Factory Default, Keys Reserve
++AT+ADR=0 Set the Adaptive Data Rate Off
--(% style="background-color:#dcdcdc" %)**AT+NJM=0 **(%%)Set to ABP mode
++AT+DR=5  Set Data Rate
--(% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%)Set the Adaptive Data Rate Off
++AT+TDC=60000  Set transmit interval to 60 seconds
--(% style="background-color:#dcdcdc" %)**AT+DR=5**  (%%)Set Data Rate
++AT+CHS=868400000 Set transmit frequency to 868.4Mhz
--(% style="background-color:#dcdcdc" %)**AT+TDC=60000** (%%) Set transmit interval to 60 seconds
++AT+RX2FQ=868400000 Set RX2Frequency to 868.4Mhz (according to the result from server)
--(% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%) Set transmit frequency to 868.4Mhz
++AT+RX2DR=5  Set RX2DR to match the downlink DR from server. see below
--(% style="background-color:#dcdcdc" %)**AT+RX2FQ=868400000** (%%) Set RX2Frequency to 868.4Mhz (according to the result from server)
++AT+DADDR=26 01 1A F1 Set Device Address to 26 01 1A F1, this ID can be found in the LoRa Server portal.
--(% style="background-color:#dcdcdc" %)**AT+RX2DR=5**  (%%) Set RX2DR to match the downlink DR from server. see below
++ATZ          Reset MCU
--(% style="background-color:#dcdcdc" %)**AT+DADDR=26** (%%) 01 1A F1 Set Device Address to 26 01 1A F1, this ID can be found in the LoRa Server portal.
++**Note:**
--(% style="background-color:#dcdcdc" %)**ATZ**       (%%)   Reset MCU
++1. Make sure the device is set to ABP mode in the IoT Server.
++1. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
++1. Make sure SF / bandwidth setting in LG01/LG02 match the settings of AT+DR. refer [[this link>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.
++1. The command AT+RX2FQ and AT+RX2DR is to let downlink work. to set the correct parameters, user can check the actually downlink parameters to be used. As below. Which shows the RX2FQ should use 868400000 and RX2DR should be 5
++[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image029.png]]
--(% style="color:red" %)**Note:**
--(% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
--2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
--3. Make sure SF / bandwidth setting in LG01/LG02 match the settings of AT+DR. refer [[this link>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.
--4. The command AT+RX2FQ and AT+RX2DR is to let downlink work. to set the correct parameters, user can check the actually downlink parameters to be used. As below. Which shows the RX2FQ should use 868400000 and RX2DR should be 5
++1. FAQ
++11. How to upgrade the image?
--[[image:1654136435598-589.png]]
--
--
--= 6. FAQ =
--
--== 6.1 How to upgrade the image? ==
--
  The RS485-BL LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to RS485-BL to:
  * Support new features
@@ -1276,7 +1276,7 @@
  Below shows the hardware connection for how to upload an image to RS485-BL:
--[[image:1654136646995-976.png]]
++[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image030.png]]
  **Step1:** Download [[flash loader>>url:https://www.st.com/content/st_com/en/products/development-tools/software-development-tools/stm32-software-development-tools/stm32-programmers/flasher-stm32.html]].
@@ -1284,95 +1284,97 @@
  **Step3: **Open flashloader; choose the correct COM port to update.
--[[image:image-20220602102605-1.png]]
++|(((
++HOLD PRO then press the RST button, SYS will be ON, then click next
++)))
--[[image:image-20220602102637-2.png]]
++|(((
++Board detected
++)))
++|(((
++
++)))
--[[image:image-20220602102715-3.png]]
++[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image031.png]]            [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image032.png]]
--== 6.2 How to change the LoRa Frequency Bands/Region? ==
++[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image033.png]]           [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image034.png]]
--User can follow the introduction for [[how to upgrade image>>||anchor="H6.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
++[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image035.png]]   [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image036.png]]
--== 6.3 How many RS485-Slave can RS485-BL connects? ==
++1.
++11. How to change the LoRa Frequency Bands/Region?
--The RS485-BL can support max 32 RS485 devices. Each uplink command of RS485-BL can support max 16 different RS485 command. So RS485-BL can support max 16 RS485 devices pre-program in the device for uplink. For other devices no pre-program, user can use the [[downlink message (type code 0xA8) to poll their info>>||anchor="H3.3.3Configurereadcommandsforeachsampling"]].
++User can follow the introduction for [[how to upgrade image>>path:#upgrade_image]]. When download the images, choose the required image file for download.
--= 7. Trouble Shooting =
++1.
++11. How many RS485-Slave can RS485-BL connects?
++The RS485-BL can support max 32 RS485 devices. Each uplink command of RS485-BL can support max 16 different RS485 command. So RS485-BL can support max 16 RS485 devices pre-program in the device for uplink. For other devices no pre-program, user can use the [[downlink message (type code 0xA8) to poll their info>>path:#downlink_A8]].
--== 7.1 Downlink doesn’t work, how to solve it? ==
--Please see this link for debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome]]
--== 7.2 Why I can’t join TTN V3 in US915 /AU915 bands? ==
++1. Trouble Shooting
++11. Downlink doesn’t work, how to solve it?
--It might about the channels mapping. Please see for detail: [[Notice of Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
++Please see this link for debug:
++[[http:~~/~~/wiki.dragino.com/index.php?title=Main_Page#LoRaWAN_Communication_Debug>>url:http://wiki.dragino.com/index.php?title=Main_Page#LoRaWAN_Communication_Debug]]
--= 8. Order Info =
--(% style="color:blue" %)**Part Number: RS485-BL-XXX**
--(% style="color:blue" %)**XXX:**
++1.
++11. Why I can’t join TTN V3 in US915 /AU915 bands?
--* (% style="color:blue" %)**EU433**(%%): frequency bands EU433
--* (% style="color:blue" %)**EU868**(%%): frequency bands EU868
--* (% style="color:blue" %)**KR920**(%%): frequency bands KR920
--* (% style="color:blue" %)**CN470**(%%): frequency bands CN470
--* (% style="color:blue" %)**AS923**(%%): frequency bands AS923
--* (% style="color:blue" %)**AU915**(%%): frequency bands AU915
--* (% style="color:blue" %)**US915**(%%): frequency bands US915
--* (% style="color:blue" %)**IN865**(%%): frequency bands IN865
--* (% style="color:blue" %)**RU864**(%%): frequency bands RU864
--* (% style="color:blue" %)**KZ865**(%%): frequency bands KZ865
++It might about the channels mapping. Please see for detail.
++[[http:~~/~~/wiki.dragino.com/index.php?title=LoRaWAN_Communication_Debug#Notice_of_US915.2FCN470.2FAU915_Frequency_band>>url:http://wiki.dragino.com/index.php?title=LoRaWAN_Communication_Debug#Notice_of_US915.2FCN470.2FAU915_Frequency_band]]
--= 9. Packing Info =
--(((
++
++1. Order Info
++
++**Part Number: RS485-BL-XXX**
++
++**XXX:**
++
++* **EU433**: frequency bands EU433
++* **EU868**: frequency bands EU868
++* **KR920**: frequency bands KR920
++* **CN470**: frequency bands CN470
++* **AS923**: frequency bands AS923
++* **AU915**: frequency bands AU915
++* **US915**: frequency bands US915
++* **IN865**: frequency bands IN865
++* **RU864**: frequency bands RU864
++* **KZ865: **frequency bands KZ865
++
++1. Packing Info
++
  **Package Includes**:
--)))
--* (((
--RS485-BL x 1
--)))
--* (((
--Stick Antenna for LoRa RF part x 1
--)))
--* (((
--Program cable x 1
--)))
++* RS485-BL x 1
++* Stick Antenna for LoRa RF part x 1
++* Program cable x 1
--(((
  **Dimension and weight**:
--)))
--* (((
--Device Size: 13.5 x 7 x 3 cm
--)))
--* (((
--Device Weight: 105g
--)))
--* (((
--Package Size / pcs : 14.5 x 8 x 5 cm
--)))
--* (((
--Weight / pcs : 170g
++* Device Size: 13.5 x 7 x 3 cm
++* Device Weight: 105g
++* Package Size / pcs : 14.5 x 8 x 5 cm
++* Weight / pcs : 170g
--
--)))
++1. Support
--= 10. Support =
--
  * Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.
--* Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to [[support@dragino.com>>url:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]]
++* Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to
++
++[[support@dragino.com>>url:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]]

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