[Introduction]：ME31-AAAX2240 is equipped with 4 Type A relay outputs and 2analog (0-20mA/4-20mA) inputs, 2 dry contact input detection, supports or Modbus RTU protocol for acquisition and control,and the equipment is also A network I/O networking module that can be used as a simple Modbus gateway (automatically send commands with non-local Modbus addresses through the serial port/network port).