Power Meter Design service Input:true value three phase measure( ... 3-phase under-voltage/lacking phase/over current/breaking line protection; Current: isolated analoge output 4-20mA for any signal ... and RTD), Panel Meter, Sensor Meter, inductor, Power Meter, Coulometer, Voltage Meter, Ampere Meter, Counter, Tacho Meter, Frequency Meter, flowmeter,Timer,Timer Relay, Solid State Relay, Proximity Sensor, ...