ECO Series 120V 850VA 425W Energy-Saving Standby UPS with USB, LCD Display and 12 OutletsOutput Volt Amp Capacity (VA) 850 Output Watt Capacity (Watts) 425 Nominal Output Voltage(s) Supported 110V; 115V; 120V Nominal Voltage Details 115v nominal output in battery mode Frequency Compatibility 60 Hz Output Voltage Regulation (Battery Mode) +/- 5% Output Receptacles (12) 5-15R UPS Output Receptacles (Surge Suppression Only) 6 UPS outlets, 6 surge-only outlets Output AC Waveform (AC Mode) Sine wave Output AC Waveform (Battery Mode) PWM sine wave