AB modbus gateway

Original price was: $37.00.Current price is: $35.80.

AB modbus gateway – convert Modbus/RS485 to WiFi

6 in stock

Category: SKU: AMG Tags:


AB modbus gateway is based on ESP32 C3. This Device has built-in WiFi + BLE to send data wireless to other device like a server or computer for post-processing or controlling or monitoring. RS485 have some standard protection on it. You can use this device in home automation too where you only have to provide WiFi in one device.

dtu-1 dtu-2


  • Directly program with ESPHOME. No need to write code but a configure YAML file instead
  • Onboard 2 Programmable LEDs.
  • Onboard Type-C USB for Programming.
  • Two buttons.
  • DIN rail + wall mount Encloser.
  • Compact Size (46.2mm x 29.6mm x 60mm)
  • Low Power.

Note: The RJ-45 connector is not designed for ethernet connection. It’s used for wire RS485 pins.

Power requirement

  • Input voltage 12V DC.

GPIO table

GPIO Description
GPIO 9 Button 1, K1 for programming
GPIO 3 Button 2 (K2)
GPIO 6 Green LED
GPIO 7 Yellow LED
GPIO 4 RS485 TX pin
GPIO 5 RS485 RX pin

Example firmware


Use case:

For better price please contact Wechat: 13661293819, skype: aprilbeacon

Additional information

Weight 50 g


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