Changes for page PG1302 -- LoRaWAN Concentrator User Manual

Last modified by Kilight Cao on 2024/06/22 10:43

From version < 57.1 >

edited by Xiaoling
on 2022/05/06 10:12

To version < 96.1 >

edited by Edwin Chen
on 2022/05/06 20:06

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--XWiki.Xiaoling
++XWiki.Edwin

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--[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image002.gif]]
  **PG1302 LoRaWAN Concentrator User Manual**
--[[image:1651796979665-130.png]]
--Document Version: 1.0.0
--Image Version: v1.0
++{{toc/}}
--{{toc numbered="true"/}}
++----
++(% class="wikigeneratedid" id="H" %)
++(((
++
++)))
++=== 1. Introduction ===
++==== 1.1  What is PG1302 LoRaWAN Concentrator? ====
--~1. Introduction
++(((
++(((
++(((
++(((
++   The PG1302 is a multi-channel high performance transmitter/receiver designed to simultaneously receive several
++)))
++)))
-- 1.1  What is PG1302 LoRaWAN Concentrator?
++(((
++(((
++   LoRa packets using random spreading factors on random channels. Its goal is to enable robust connection
++)))
--The PG1302 is a multi-channel high performance transmitter/receiver designed to simultaneously receive several LoRa packets using random spreading factors on random channels. Its goal is to enable robust connection between a central wireless data concentrator and a massive amount of wireless end-points spread over a very wide range of distances.
++(((
++   between a central wireless data concentrator and a massive amount of wireless end-points spread over
++)))
++(((
++   a very wide range of distances.
++)))
++)))
++)))
--The PG1302 is design to use with Raspberry Pi to build smart metering fixed networks and Internet of Things applications with up to 5000 nodes per km2 in moderately interfered environment.
++(((
++(((
++(((
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++(((
++(((
++(((
++(((
++   The PG1302 is design to use with Raspberry Pi to build smart metering fixed networks and Internet of Things
++)))
++)))
--PG1302 is fully compatible with RPi3/4, users can use the pre-build OS from Dragino to set up and easy to use the module by Web UI. Or install the raw lorawan driver in the exist OS.
++(((
++(((
++   applications with up to 5000 nodes per km2 in moderately interfered environment.
++)))
++)))
++)))
  (((
  (((
++(((
  )))
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++)))
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--1.2 Features
++(((
++(((
++(((
++(((
++   PG1302 is fully compatible with RPi3/4, users can use the pre-build OS from Dragino to set up and easy to use the
++)))
++)))
++(((
++(((
++   module by Web UI. Or install the raw lorawan driver in the exist OS.
++)))
++)))
++)))
++)))
++
++(((
++(((
++
++)))
++)))
++
++==== 1.2 Features ====
++
  * Base on Semtech SX1302 solution
  * Support Raspberry Pi 3B/3B+/4
  * Up to -140dBm sensitivity
@@ -53,32 +53,40 @@
  * Mini-PCIe Interface
  * Converter board to support Raspberry Pi
--1.3 General Interfaces
++==== 1.3 General Interfaces ====
  * SPI interface for LoRa
  * Power Input: 5v, 1A
  * 1 x I-PEX for LoRa
--1.4 Pin Mapping
++==== 1.4 Pin Mapping ====
       [[image:1651743282627-547.png||height="402" width="425"]]
--[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image006.gif]]
--1.5 LEDs
--     TX: Blink when transmit a packet
++==== 1.5 LEDs ====
--     RX: Blink when receive a packet
++(((
++   TX: Blink when transmit a packet
++)))
--     Config: Always ON
++(((
++   RX: Blink when receive a packet
++)))
--1.6 Power Consumption
++(((
++   Config: Always ON
++)))
--     TBD
--1.7 Applications
++==== 1.6 Power Consumption ====
++   TBD
++
++
++==== 1.7 Applications ====
++
  * Smart Buildings & Home Automation
  * Logistics and Supply Chain Management
  * Smart Metering
@@ -86,19 +86,24 @@
  * Smart Cities
  * Smart Factory
--2. Example: Set up as LoRaWAN gateway.
++=== 2. Example: Set up as LoRaWAN gateway. ===
-- 2.1 System structure
++==== 2.1 System structure ====
--    This example is an example to show how to set up the PG1302 + RPi as a LoRaWAN gateway to use with [[TheThingsNetwork>>http://www.thethingsnetwork.org/]](TTN) LoRaWAN server.. Set up method for other          server are similar。
++(((
++   This example is an example to show how to set up the PG1302 + RPi as a LoRaWAN gateway to use with
++)))
++(((
++   [[TheThingsNetwork>>url:http://www.thethingsnetwork.org/]](TTN) LoRaWAN server. Set up method for other server are similar.
++)))
++
  (% style="text-align:center" %)
  [[image:1651743698677-436.png||height="457" width="686"]]
--[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image008.gif]]
--2.2 Hardware Installation
++==== 2.2 Hardware Installation ====
  **~   Important Notice: **Please power the RPI with 5V,3A cable.
@@ -105,44 +105,72 @@
  (% style="text-align:center" %)
  [[image:1651743803032-803.png]]
--[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image010.gif]]
--3. Install the software?
++=== 3. Install the software? ===
++
     There are two ways to install software in RPi4 to use PG1302.
  * Flash SD card with Dragino pre-build image which support Web UI.
  * Install lora packet forwarder in existing RPi OS.
--4. Flash with pre-build image
++=== 4. Flash with pre-build image ===
-- 4.1 Download the dragino image for RPI
++==== 4.1 Download the dragino image for RPI ====
--    Download PG1302_for_Rpi4_64_with_webui from
++(((
++   Download PG1302_for_Rpi4_64_with_webui from
++)))
--    [[https:~~/~~/www.dropbox.com/sh/f6nbldh1qbspya5/AACgL6pDkwdBQO1BQqq_Nubwa?dl=0>>https://www.dropbox.com/sh/f6nbldh1qbspya5/AACgL6pDkwdBQO1BQqq_Nubwa?dl=0]]
++(((
++   [[https:~~/~~/www.dropbox.com/sh/f6nbldh1qbspya5/AACgL6pDkwdBQO1BQqq_Nubwa?dl=0>>https://www.dropbox.com/sh/f6nbldh1qbspya5/AACgL6pDkwdBQO1BQqq_Nubwa?dl=0]]
++)))
--4.2 Flash the image to SD card
--   Flash the image to SD card:
++==== 4.2 Flash the image to SD card ====
++    Flash the image to SD card:
++
  (% style="text-align:center" %)
  [[image:1651744119133-233.png||height="373" width="621"]]
--   [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image012.jpg]]Note: Download the flash tool following this link
++   Note: Download the flash tool following this link
     [[https:~~/~~/www.balena.io/etcher/>>https://www.balena.io/etcher/]]
--4.3 Access the Linux console.
--     Connect the RPI Ethernet port to your router,  RPi will obtain an IP address from your router. In the router’s management portal, you should be able to find what IP address the       router has assigned to the RPI. You can use this IP to connect the WEB UI or SSH access of RPI.
++==== 4.3 Access the Linux console ====
--     Make sure your PC and the RPI is in the same network, then use a SSH tool (such as [[putty>>url:http://www.chiark.greenend.org.uk/~~sgtatham/putty/download.html]]) to access it. Below are screenshots
++(((
++(((
++(((
++   Connect the RPI Ethernet port to your router,  RPi will obtain an IP address from your router. In the router’s
++)))
++(((
++   management portal, you should be able to find what IP address the router has assigned to the RPI. You can
++)))
++
++(((
++   use this IP to connect the WEB UI or SSH access of RPI.
++)))
++)))
++
++(((
++(((
++   Make sure your PC and the RPI is in the same network, then use a SSH tool (such as [[putty>>url:http://www.chiark.greenend.org.uk/~~sgtatham/putty/download.html]]) to access it.
++)))
++
++(((
++   Below are screenshots
++)))
++)))
++)))
++
++
  (% style="text-align:center" %)
  [[image:1651744193675-591.png||height="450" width="466"]]
--[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image014.jpg]]
     The account details for Web Login are:
@@ -161,37 +161,52 @@
  (% style="text-align:center" %)
  [[image:1651744358515-107.png||height="366" width="581"]]
--[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image018.jpg]] 4.4 Access the WebUI of RPi4.
--   4.4.1 Home page
++==== 4.4 Access the WebUI of RPi4. ====
--     Open a browser on the PC and type the RPI ip address
++===== 4.4.1 Home page =====
--     [[http:~~/~~/IP_ADDRESS** **>>url:http://192.168.1.xx/]] (If the IP is assigned by uplink router)
++(((
++   Open a browser on the PC and type the RPI ip address
++)))
++(((
++                   [[http:~~/~~/IP_ADDRESS** **>>url:http://192.168.1.xx/]] (If the IP is assigned by uplink router)
++)))
--    You will see the login interface of RPI as shown below.
++(((
++   You will see the login interface of RPI as shown below.
++)))
--    The account details for Web Login are:
++(((
++   The account details for Web Login are:
++)))
++(((
  **~                   User Name: root**
++)))
++(((
  **~                   Password:   dragino**
++)))
  (% style="text-align:center" %)
  [[image:1651744457761-993.png||height="352" width="621"]]
--[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image020.jpg]]
--4.4.2 LoRa Page
++===== 4.4.2 LoRa Page =====
--    This page shows the LoRa Radio Settings. There are a set of default frequency band according to LoRaWAN protocol, and user can customize the band* as well.
++(((
++   This page shows the LoRa Radio Settings. There are a set of default frequency band according to LoRaWAN
++)))
++(((
++   protocol, and user can customize the band* as well.
++)))
++
  (% style="text-align:center" %)
  [[image:1651744554845-970.png||height="328" width="621"]]
--[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image022.jpg]]
--
       Different PG1302 hardware version can support different frequency range:
       ➢ 868: valid frequency: 863Mhz ~~ 870Mhz. for bands EU868, RU864, IN865 or KZ865.
@@ -198,7 +198,6 @@
       ➢ 915: valid frequency: 902Mhz ~~ 928Mhz. for bands US915, AU915, AS923 or KR920
--
       After user choose the frequency plan, he can see the actually frequency in used by checking the
       page LogRead ~-~-> LoRa Log
@@ -208,71 +208,61 @@
       [[http:~~/~~/wiki.dragino.com/index.php?title=Customized_Frequency_Band_for_Gateway>>url:http://wiki.dragino.com/index.php?title=Customized_Frequency_Band_for_Gateway]]
--4.4.3 LoRaWAN Page
++===== 4.4.3 LoRaWAN Page =====
--     4.4.3.1 Semtech UDP
++====== 4.4.3.1 Semtech UDP ======
  (% style="text-align:center" %)
  [[image:1651744767914-283.png||height="352" width="621"]]
++   Note *: See this instruction for how to configure TTN.
--[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image024.jpg]]
++   [[https:~~/~~/wiki.dragino.com/index.php?title=Notes_for_TTN>>url:https://wiki.dragino.com/index.php?title=Notes_for_TTN||style="background-color: rgb(255, 255, 255);"]]
--     Note *: See this instruction for how to configure TTN.
--     [[https:~~/~~/wiki.dragino.com/index.php?title=Notes_for_TTN>>url:https://wiki.dragino.com/index.php?title=Notes_for_TTN]]
++====== 4.4.3.2 Basic Station ======
--
--4.4.3.2 Basic Station
--
  (% style="text-align:center" %)
  [[image:1651744890629-683.png||height="380" width="621"]]
--[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image026.jpg]]
++   Note *: See this instruction for how to configure TTN.
--     Note *: See this instruction for how to configure TTN.
++   [[https:~~/~~/wiki.dragino.com/index.php?title=Notes_for_AWS-IoT-Core>>url:https://wiki.dragino.com/index.php?title=Notes_for_AWS-IoT-Core]]
--     [[https:~~/~~/wiki.dragino.com/index.php?title=Notes_for_AWS-IoT-Core>>url:https://wiki.dragino.com/index.php?title=Notes_for_AWS-IoT-Core]]
++===== 4.4.4 LogRead =====
--4.4.4 LogRead
++====== 4.4.4.1 LoRa Log ======
--     4.4.4.1 LoRa Log
--
  (% style="text-align:center" %)
  [[image:1651744955955-452.png||height="571" width="621"]]
--[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image028.jpg]]
++   Show the frequency for LoRa Radio and traffics.
--     Show the frequency for LoRa Radio and traffics.
++====== 4.4.4.2 System Log ======
--4.4.4.2 System Log
++   Show system log.
--     Show system log.
--
  (% style="text-align:center" %)
  [[image:1651745003470-264.png||height="477" width="621"]]
--[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image030.jpg]]
--4.4.4.3 Record Log
++====== 4.4.4.3 Record Log ======
++**~   Record the system log.**
--**Record the system log.**
--
  (% style="text-align:center" %)
  [[image:1651745069814-662.png||height="144" width="621"]]
--[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image032.jpg]]
--5. Install stand alone LoRa Packet Forwarder.
++=== 5. Install stand alone LoRa Packet Forwarder. ===
-- 5.1 OS requirement
++==== 5.1 OS requirement ====
--     RPI in this example is RPI model 4B with fresh Raspbian OS install.
++   RPI in this example is RPI model 4B with fresh Raspbian OS install.
          pi@raspberrypi:~~$ cat /etc/os-release
@@ -295,39 +295,39 @@
          BUG_REPORT_URL="http:~/~/www.raspbian.org/RaspbianBugs"
--5.2 Get Gateway ID in Raspberry and input this in TTN v3.
++==== 5.2 Get Gateway ID in Raspberry and input this in TTN v3. ====
--     In RPI, run below command to get a Gateway ID
++   In RPI, run below command to get a Gateway ID
--      ifconfig eth0
++   (% class="mark" %)ifconfig eth0
  (% style="text-align:center" %)
  [[image:1651745210205-512.png||height="130" width="621"]]
--[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image034.gif]]
++(((
++   We got the ether (eth0 MAC) address is b8:27:eb:49:62:bc). Add ffff at the end and remove “:” to get the
++)))
--     We got the ether (eth0 MAC) address is b8:27:eb:49:62:bc). Add ffff at the end and remove “:” to get the gateway ID: b827ebxxxxbcffff. Input this to TTN v3. Make sure to select legacy packet forwarder.
++(((
++   gateway ID: b827ebxxxxbcffff.  Input this to TTN v3. Make sure to select legacy packet forwarder.
++)))
  (% style="text-align:center" %)
  [[image:1651745267862-321.png||height="526" width="621"]]
--[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image036.jpg]]
--[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image038.jpg]]
  (% style="text-align:center" %)
  [[image:1651745306744-481.png||height="478" width="621"]]
++After set up, the status should show not connected as below:
++
  (% style="text-align:center" %)
  [[image:1651745366987-458.png||height="363" width="621"]]
--After set up, the status should show not connected as below:
--[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image040.jpg]]
++===== 5.2.1 Download and install LoRaWAN packet forwarder =====
--5.2.1 Download and install LoRaWAN packet forwarder
--
--
       Enable SPI and I2C first:
       a)SPI needs to be enabled on the Raspberry Pi
@@ -344,20 +344,14 @@
  (% style="text-align:center" %)
  [[image:image-20220505181135-2.png]]
--[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image044.jpg]]
--[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image046.jpg]]
--
--
--
       In RPI , Fist: Enter root account:
  (% style="text-align:center" %)
  [[image:1651745583363-614.png]]
--[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image048.jpg]]
       and then run:
@@ -370,7 +370,6 @@
  (% style="text-align:center" %)
  [[image:1651745611629-818.png]]
--[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image050.gif]]
       This will download the packet forwarder package from Dragino Server to RPI, and start install the package.
@@ -379,30 +379,39 @@
  (% style="text-align:center" %)
  [[image:1651745657252-173.png||height="426" width="621"]]
--[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image052.jpg]]
--5.5.2 Config Gateway ID, Frequency Band and Server address
++===== 5.2.2 Config Gateway ID, Frequency Band and Server address =====
--     After installation, user can find the configuration file in** /etc/lora/ **Replace the gateway ID we got above to the **gateway_ID** in file **local_conf.json**
++(((
++   After installation, user can find the configuration file in** /etc/lora/ **Replace the gateway ID we got above to the
++)))
--     The default LoRaWAN server points to localhost, user need to put the correct server address to the server_address field in file **local_conf.json**, like below.
++(((
++**~   gateway_ID** in file **local_conf.json**
++)))
++(((
++   The default LoRaWAN server points to localhost, user need to put the correct server address to the
++)))
++
++(((
++   server_address field in file **local_conf.json**, like below.
++)))
++
  (% style="text-align:center" %)
  [[image:1651745709709-887.png||height="820" width="621"]]
--[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image054.jpg]]
--     User can find the TTN v3 server address from:
++   User can find the TTN v3 server address from:
--     [[Server Addresses ~| The Things Stack for LoRaWAN (thethingsindustries.com)>>url:https://www.thethingsindustries.com/docs/getting-started/server-addresses/#deployments]]
++   [[Server Addresses ~| The Things Stack for LoRaWAN (thethingsindustries.com)>>url:https://www.thethingsindustries.com/docs/getting-started/server-addresses/#deployments]]
--     And the default frequency band is US915 in **global_conf.json** file.
++   And the default frequency band is US915 in **global_conf.json** file.
  (% style="text-align:center" %)
  [[image:1651745838008-820.png||height="650" width="621"]]
--[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image056.jpg]]
  * If user want to change to other frequency bands, User can copy the file from **/etc/lora/cfg-302 **and put it into** /etc/lora/global_conf.json.**
@@ -419,53 +419,62 @@
  (% style="text-align:center" %)
  [[image:1651745984006-868.png]]
--[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image060.jpg]]
  * If user wants to change to other LoRaWAN server, modify the **global_conf.json** file.
--5.2.3 Check result
++(% class="wikigeneratedid" %)
++(((
++
++)))
--     Run below command to restart the dragino_fwd:
++===== 5.2.3 Check result =====
--        sudo systemctl stop draginofwd
++(((
++   Run below command to restart the dragino_fwd:
++)))
--        sudo systemctl start draginofwd
++(((
++           sudo systemctl stop draginofwd
++)))
--     debug check the ruing status of fwd:
++(((
++           sudo systemctl start draginofwd
++)))
--     sudo systemctl status draginofwd
++(((
++   debug check the ruing status of fwd:
++)))
++(((
++           sudo systemctl status draginofwd
++)))
++
  (% style="text-align:center" %)
  [[image:1651746045057-414.png]]
--[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image062.jpg]]
--     The dragino_fwd will start with the new gateway ID and TTN v3 should show the connection ok:
++   The dragino_fwd will start with the new gateway ID and TTN v3 should show the connection ok:
  (% style="text-align:center" %)
  [[image:1651746078253-168.png||height="372" width="621"]]
--[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image064.jpg]]
++We can check dragino_fwd running states in RPi by running:
--     We can check dragino_fwd running states in RPi by running:
++(% class="box infomessage" %)
++(((
++ **//  sudo journalctl -u draginofwd -f//**
++)))
--     sudo journalctl -u draginofwd -f
--
--(% style="text-align:center" %)
  [[image:1651746111963-838.png]]
--[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image066.gif]]
++ If there are LoRaWAN nodes transmitting nearby, we can see the traffic in TTN v3 –> Gateway ~-~-> Live data
--     If there are LoRaWAN nodes transmits nearby, we can see the traffic in TTN v3 –> Gateway ~-~-> Live data
--
--(% style="text-align:center" %)
  [[image:1651746139304-966.png||height="326" width="621"]]
--[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image068.jpg]]
--5.2.4 Commands to handle service
++===== 5.2.4 Commands to handle service =====
  * **Stop** dragino_fwd service:  sudo systemctl stop draginofwd
  * **Disable** dragino_fwd auto run after boot: sudo systemctl disable draginofwd
@@ -473,43 +473,43 @@
  * **Auto run** dragino_fwd after boot:  sudo systemctl enable draginofwd
  * **Show status** of dragino_fwd:  sudo systemctl status draginofwd
--6. Order Info
++=== 6. Order Info ===
--   Part Number:     **PG1302-XX**  Or Part Number:         **PG1302-PI-XX   **(Include RPi converter board for RPI 3/4)
++     Part Number:  **PG1302-XX**    Or  Part Number:  **PG1302-PI-XX   **(Include RPi converter board for RPI 3/4)
--**~   XX:**
++**~     XX:**
  * 868 (For Bands: EU868,IN865)
  * 915 (For Bands: US915,AU915,AS923,KR920)
  * 470 (For Band: CN470)
--7. Packing Info
++=== 7. Packing Info ===
--**~   PG1302 Package Includes**:
++(((
++**~     PG1302 Package Includes**:
++)))
--* PG1302 x 1
--* LoRa Antenna x 1
++* (((
++PG1302 x 1
++)))
++* (((
++LoRa Antenna x 1
++)))
--**~   PG1302-PI Package Includes**:
++(((
++**~     PG1302-PI Package Includes**:
++)))
--* PG1302 x 1
--* LoRa Antenna x 1
--* RPi3/4 converter PCB
--* Screws to hole converter PCB on RPI.
++* (((
++PG1302 x 1
++)))
++* (((
++LoRa Antenna x 1
++)))
++* (((
++RPi3/4 converter PCB
++)))
++* (((
++Screws to hole converter PCB on RPI.
++)))
--8. Reference
--
--*    Datasheet, User Manual & Software Download:
--
--         [[https:~~/~~/www.dropbox.com/sh/f6nbldh1qbspya5/AACgL6pDkwdBQO1BQqq_Nubwa?dl=0>>url:https://www.dropbox.com/sh/f6nbldh1qbspya5/AACgL6pDkwdBQO1BQqq_Nubwa?dl=0]]
--
--
--9. 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]]
--
--
--

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