[[INPUT]] Voltage: 100 / 110 / 120 V: 80 - 150 Vac, 220 / 230 / 240 V: 162 - 295 Vac (145 - 295 Vac optional) Frequency: 50 / 60 Hz + - 10% (auto-sensing) [[OUTPUT]] Voltage: 100 / 110 / 120 Vac + - 10% or 220 / 230 / 240 Vac + - 10% Frequency: 50 / 60 Hz + - 1% (auto-sensing) Waveform: Mains mode: pure sine wave Battery mode: simulated sine wave Transfer time: Typical 2 - 7 ms, 10 ms max. [[BATTERIES]] DC voltage: 24 V Configuration: 12 V / 9 Ah x 2 Recharge time: 6 - 8 h [[COMMUNICATIONS]] USB (optional): Supports Windows? 98 / 2000 / 2003 / XP / Vista / 2008 / Windows?7 / 8 / 10 [[OTHER SPECS]] Protections: Short circuit - battery overcharge - overdischarge - overload - surge Humidity: 20 - 90% RH @ 0- 40 (non-condensing) Noise level: <= 40 dB (1 m) Metal Case: Net / Gross weight (kg) 12.9 / 13.3, Dimensions 25 x 380 x 225, Packaged dimensions: 161 x 369 x 290, Quantity /20ft 1000 pcs