... segments output control DW series Single phase Electric Meter(vol/ampere/power/frequency/power factor) Features: 1) ... measure 8 electrical parameters,such as voltage/ampere/power/power factor/frequency/electrical degree/reactive ... (TC and RTD), Panel Meter, Sensor Meter, inductor, Power Meter, Coulometer, Voltage Meter, Ampere Meter, Counter, Tacho Meter, Frequency Meter, flowmeter,Timer,Timer Relay ...