... display 3. C Current and Voltage Combined Meter. Name: Digital AC Current and Voltage Combined MeterModel: YD4UI-9D4Technical parameterAccuracyDisplay: ... LED display with sign bitlnputNominal inputCurrent : AC1A,AC5A, Voltage: AC100V,AC400V,OverloadingContinuance: 1.2 times, Instantaneous: current ... 10 times(5s), Voltage 2 times(10s)Frequency40-60Hz, class 0.2Power ...