... Range220V/110V±10%(AC Mode), 220V/110V±5%(Inverter Mode)Frequency50HZ/60HZ (Auto Sensing)Wave FormPure Sine ... IndicatorsLoad level / Battery level, Battery , Utility Power, Output, Bypass, Overload, Fault/BuzzerLCD/LED contentBattery capacity. Mute. ... Input Voltage. Output Voltage.ProtectionShort Circuit, lightning, over voltage, unbalanced loadsCool ...