1050VA/480W, Input Voltage 110/ 115/120Vac or 220/230/240Vac, Input Voltage Range 81-145VAC/140-300VAC, 50 Hz/60Hz(Auto sensing), Output Voltage 110/ 115/120Vac or 220/230/240Vac, AC Voltage Regulation 10, Frequency Range 50Hz/60Hz 1Hz, Transfer time Typical 26ms, Internal maintenance-free lead-acid battery, 12V/9Ah x1, Charging Voltage 13.7VDC, Charging ability 4-6 hours recover to 90 capacity, Full protection, Dimension,DxWxH(mm)279x101x142, Weight (kg) 4.9