... provide meter ,voltmeter,ammter,temperature control multifunctional meterMultifunction Electric Power Meter integrate the functions with programmable measurement, display, digital communication and electric energy ... .5 .Display12-bit LED displaySignal InputNetworkThree-phase four wires Y34/ three-phase three wiresV33VoltageRated valueAC380V / AC100VOver loadContinuous:1.2 times and instantaneous ...