... 300VAC Frequency Range46~54Hz(default), user adjustable within 40~60Hz Power Factor0.97 ConnectionIEC320-10A inletIEC320-16A inletOutputVoltage220VAC ± 2% Frequency46 ... and vice versaLED IndicatorsStatusLoad level / Battery level, Battery , Utility Power, Inverter, Bypass, Overload, FaultAudible AlarmBypass, On battery mode, Battery low, ... 1331.532DimensionsW x D x H (mm)145 x 400 x 220192 x 460 x 348