The modules makes it simple to use with microcontroller's UART to to create bidirectional RS485 networks.
On-board MAX485 chip, low-power, Slew-Rate Transceiver
RS485 is brought out to 5.08 (mm) pitch 2P terminal for easy wiring RS-485 communication
All pins can be controlled by the micro controller
120R terminating resistor on board
Power LED Indication
2.54mm Pitch interfacing.
Working voltage: 5V