Display: LCD Power: 1100VA / 600W Input Voltage range: 140V - 290V AC Input Frequency range: 45Hz - 55Hz Output Voltage Regulation (battery mode): 220V +/-9% AC Output Frequency range (battery mode): 50Hz +/- 0.5% Transfer time: <9ms Waveform (battery mode): simulated sine wave Battery type and number: 2 x 12V 7.1Ah TED Battery Experts Backup time (120W load): 35 minutes Typical recharge time: 7 - 15 hours Full protection: Protect surge, overload, discharge, overcharge and short circuit Output receptacles: 4 x Schuko CEE 7/3 Dimensions D x W x H (mm ): 345 x 145 x 165 Net weight: 8.2 kg Operating humidity / temperature: 0 - 90% / 0 - 40 degrees centigrade Noise level: less than 40 dB