... regulations), USB communication port, alarms for battery backup, low battery and overload, energy saving function (UPS green ... 176-276VACFrequency Range46-54HzPower Factor0.98ConnectionHardwiredOutputVoltage 220VAC ±1%Frequency 50Hz ±0.1% (Battery Mode)Waveform Sine ... IndicatorsStatus Load level /Battery level,Battery,Utility Power,Inverter,Bypass,Overload,Fault.Audible AlarmBypass Alarm beeps every ...