Output Voltage: LINE MODE: Sine wave line voltage 120V (-15% +13%) BATTERY MODE: PWM sine wave output within 10% of 120V Outlets: 7 Outlet Type: NEMA 5-15R Battery Run Time: Full load runtime 3 minutes (500VA) Half load runtime 8 minutes (250VA) Battery Recharge Time: 2-4 hours to 90% Alarms: Audible alarm warns of power failure, overload, UPS fault and low battery conditions Interface Port: RS-232, USB Approvals: Tested to UL1778 (USA), cUL (Canada), Class B (emissions), NOM (Mexico), RoHS-Compliant