Electric Meter Design service offer single&3 phase RMS value display, ... 3 alarm,8 segments output control DW series Single phase Electric Meter(vol/ampere/power/frequency/power factor) Features: 1) Input ... , Sensor Meter, inductor, Power Meter, Coulometer, Voltage Meter, Ampere Meter, Counter, Tacho Meter, Frequency Meter, flowmeter,Timer,Timer Relay, Solid State ...