... system,building automation DW series 3-phase True Effective Value Energy Meter(RMS)DW/MDW 3-line LED display 1) Input ... single/three phase three-wire three- factors,three-phase three wire two factors, three phase four-wire selectable.3) Output:3-line alarm ... Adjustor,thermocouple (TC and RTD), Panel Meter, Sensor Meter, inductor, Power Meter, Coulometer, Voltage Meter, Ampere Meter, Counter, Tacho ...