... Single phase in, single phase out2.Microprocessor control3.True on-line double conversion design.4.Sine wave pulse width modulation.5.Isolated output6.IGBT inverter ... Range220V or 110V+-20% Frequency50/60Hz±5% PhaseSingle phase + GND Output Voltage Range220VAC ±1% or 110VAC ... rate,UPS state, temperature LEDMain input , bypass,Inverter,Battery,Over load,Fault Efficiency Whole unit85% Communication1 ...