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 100240VAC, 50 Hz, Accuracy :0.3%FS 1 unitDisplay resolution :0.001 C (Selectable),