... etc. Display:4- LED -1999 --9999 Auxilliary power: 24V/12V/30mA DA series Process Indicator for voltage & ampere measurementFeatures:1) Input: mA, mV ... Protocol.7) Power supply: 18--30V AC/DC or 80--265V AC/DC;110V/220V .C 50/60Hz(DM8 series).8) ... thermocouple (TC and RTD), Panel Meter, Sensor Meter, inductor, Power Meter, Coulometer, Voltage Meter, Ampere Meter, Counter, Tacho Meter, Frequency Meter, ...