... :measure the single phase Wattmeter,single phase varmeter,3P3W wattmeter,3P3Wvarmeter,3P4W wattmeter or 3P4W varmeter.Feature 1.Display4 digital.LED display (red ... AC 220V±1 05060Hz 4.Input signalVoltage 100V,220V 380V Current 0-5A 5.Measuring rangeall ranges 6.Consumption<3.2VA ... resistancecase of non-combustible plastic materiaI 11.Voltage Testingover 2000V Digital Power Ammeter