1, on-board MAX485 chip, is a tool for RS-485 communications, low-power, Slew-Rate Transceiver

2, onboard then 5.08 (mm) pitch 2P terminal for easy wiring RS-485 communication

3, the chip has drawn all of the pins can be controlled by the microcontroller operation

4, Working voltage: 5V

5, board size: 44 (mm) x14 (mm)