ITEM NAME:Modbus-rtu 2-way relay module Output 2 input channel switch TTL / RS485 com B3D7 Modbus-rtu 2-way relay module Output 2 input channel switch TTL / RS485 com B3D7 Theory:Voltage Relay Model Number:XTW1-0095 Power Source:DC Contact Load:Low Power Voltage:12V Hardware resources: RS485 communication interface TTL communication interface 2 optocoupler isolation input 2 way optocoupler isolation output A user button A user LED A power indicator A STM32F030F4 microcontroller 2 relay status indicators LED lights Power supply terminal interface (12V power supply) Modbus RTU instruction Baud rate: 9600 8 NONE 1 Hexadecimal send Hexadecimal reception Steps: 1. Software settings communication baud rate 2. Set the address (communication using the device address, the default address is 01) colour:blue Material:Metal + plastic Package Contents: 1 * relay module