... power system,building automation DW series 3-phase True Effective Value Energy Meter(RMS)DW/MDW 3-line LED display 1) Input:true value single/three phase measure ... Adjustor,thermocouple (TC 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 ...