TRIPP LITE OmniSmart OMNI500ISO 500 VA 300 Watts 3 Outlets UPS with Built-in Isolation Transformer Outlets: 3 Battery Run Time: Full load runtime 5 min. (300W) Half load runtime 11 min. (150W) Battery Recharge Time: 2-4 hours to 90% Series: OmniSmart Output Voltage: LINE MODE: Sine wave line voltage 120V (-18% / +8%) BATTERY MODE: 115V (+/-5%) Outlet Type: NEMA 5-15R Alarms: Audible alarm indicates power failure conditions, silenceable via alarm cancel switch. Once cancelled, alarm will resume when approximately 2 minutes of battery operation remain (assuming full load). Interface Port: USB