Input : Universal [All type of thermocouple and PT100, Cu50 (RTD), linear voltage,linear current, MV, 2 wire transmitter input],AC current (0 5 amp.), AC voltage (0 500 volt),Alarm: High, low, second high and second low (Selectable) Communication : RS 485, RS 232 (Plug in type modules) Re transmission OP : Linear current or voltage, Power supply: SMPS 100~240VAC, 50 Hz, Accuracy : 0.3%FS± 1 unit Display resolution : 0.001° C (Selectable)