Capacity VA/Watts: 850 / 480, Voltage: 220/230/240Vac, Voltage range: 140~300Vac,Frequency Range 50/60Hz (auto sensing),AC Voltage Regulation(Batt. Mode): ±10%,Frequency Range (Batt. Mode): 50/60Hz ±1 Hz, Transfer Time Typical: 4-8ms, 13ms Max,Waveform (Batt. Mode): Simulated Sinewave, Dimensions WxDxH (mm): 289*101*142 ,Weight (Kgs): 4.9