Output Voltage: LINE MODE: Sine wave line voltage 120V (-18% / +8%) BATTERY MODE: PWM sine wave output 115V +/-5% Outlets: 6 Outlet Type: NEMA 5-15R Battery Run Time: Full load runtime 7 minutes (1500VA) Half load runtime 20 minutes (750VA) Battery Recharge Time: 2-4 hours to 90% Alarms: Audible alarm indicates power failure conditions (4 short beeps every 10 seconds), overload (continuous short beeps) and low battery (continuous tone) Interface Port: RS-232, USB Approvals: Tested to UL1778 (USA), cUL (Canada), Class A (emissions), NOM (Mexico)