... display with sign bitInputNominal inputCurrent AC1A,AC5A and etc;Voltage AC100V,AC220V,AC380V and etc.OverloadingContinuance: 1.2 ... times, Instantaneous: current 10 times(5s), Voltage 2 times(10s)Frequency50/60Hz±10%Power supplyAuxiliary power ... DC80~270V,AC220V,DC220V and etc.Power consumption<4VAIsolation withstand voltagePower and input supply,Transmitting output,Communication interface AC2kV ...