*Model Number:US-P500
*Input voltage：110V/220V
*Output voltage range：180V-240AC（V）/85V—135V
*Conversion time：20 (ms)
*Output power capacity：500W/625VA
*Maximum configurable power:4000W
*Full load efficiency：90.00％
*Waveform type：Sinusoidal wave（Input waveform）
*Input frequency：50/60 Hz +/- 5 Hz（auto sensing）
*Output frequency：Synchronize with principal frequency
*Backuptime：50~60minutes
*Battery model：Polymer lithium ionbattery pack. *Battery life is10yearsand it isreplaceable.
*Audible alarms：It will give an alarm when power cut.
*Crest factor:3 : 1
*L*W*H：255*120*86 mm
*NW：1.5 Kg
*Working environment:0 - 40 °C
*Working relative humidity：0 - 95％
*Storage temperature：-15 - 45 °C
*Surge protection:450 J
*Color：Black、Grey