TRIPP LITE SmartPro SMART700HG 700 VA 450 Watts 4 Outlets UPS System Outlets: 4 Battery Run Time: Full load runtime 18 minutes (700VA) Half load runtime 42 minutes (350VA) Battery Recharge Time: 2-4 hours to 90% Series: SmartPro Output Voltage: 120V AC Outlet Type: NEMA 5-15R-HG Hospital-Grade Alarms: 3 function 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