... It is suitable for process-control system, like pressure and flow and etc.5,Standard RS485 port supports MODBUS communication protocol ... like touch panel , PLC and etc.6,Sophisticated protection 2,Basic input and output InputRated voltage and frequencySingle 220V,three-phase 220V, ... 8-way programmable switching value input to set 32 functions.Analog input passage2-way analog signal input, 0~20mA, 0~10V ...