... 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 ... ≤5VAIsolation withstand voltagePower supply and input, Transmitting output, Communication interface AC2kV, Input, Transmitting output, Communication interface ...