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LoRaWAN IoT RS485/UART Converter

The Chao sensor RS485-BL is a  RS485 / UART to LoRaWAN Converter  for Internet of Things solutions.User can connect RS485 or UART sensor to RS485-BL converter, and configure RS485-BL to
periodically read sensor data and upload via LoRaWAN network to IoT server.

RS485-BL can interface to RS485 sensor , 3.3v/5v UART sensor or interrupt sensor. RS485-BL provides  a 3.3v output and  a 5v output  to power external sensors. Both output voltage are controllable
to minimize the total system power consumption.

RS485-BL is IP67  waterproof  and powered by  8500mAh Li-SOCI2 battery , It is designed for long term use for several years.

RS485-BL runs standard  LoRaWAN 1.0.3 in Class A . It can reach long transfer range and easy to intergrate with LoRaWAN compatible gateway and IoT server.

Each RS485-BL pre-loads with a set of unique keys for LoRaWAN registration, register these keys to local LoRaWAN server and it will auto connect after power on.


  • LoRaWAN v1.0.3 Class A
  • Ultra low power consumption
  • RS485 interface for RS485/ Modbus sensor
  • 3.3 / 5v UART interface for sensor
  • High capacity 8500 mAh Li-SOCI2 battery
  • Bands: CN470/EU433/KR920/US915
  • AT Commands to change parameters
  • Uplink on periodically or Interrupt
  • Downlink to change configure



  • Wireless Alarm and Security Systems
  • Home and Building Automation
  • Automated Meter Reading
  • Industrial Monitoring and Control
  • Long range Irrigation Systems,etc.

Package Includes:

  • 1 x RS485-LN LoRaWAN RS485/UART Converter


Dimensions and Weight:

  • Device Size: 13.0 x 5 x 4.5 cm
    Device Weight: 150g
    Package Size / pcs : 14.0 x 8x 5 cm
    Weight / pcs : 180g


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