If the power should go out, keep your critical devices powered, including your internet connection, so that you might avoid the loss of valuable data & safely shut down your equipment. Audible alarms ensure you're promptly alerted when power sources lapse. Self-testing battery & adjustable voltage sensitivity deliver optimal performance in all environments. All nine outlets provide surge, lightning & circuit-overload protection for attached devices. Intelligent battery management system supplies power as soon as electrical service is interrupted. The LED status display indicates On Line, On Battery & Building Wiring Fault conditions. USB port provides charging convenience. Three wide-spaced outlets permit the use of transformer-based plugs. Protection Type: Power; System VA: 900 VA; Backup Time at Half Load: 10.2 min @ 240 W; Automatic Voltage Regulation (AVR): No.