Internal UPS circuits support entry-level PCs for up to 60 minutes or individual VCR/DVR component for as long as 3 hours during power failures. Built-in audible alarm and large LCD front panel voltage display indicates input voltage, battery capacity, and a variety of operating conditions, plus rotatable display for easy viewing whether in vertical or horizontal position. HID-compliant USB interface enables full integration with built-in power management and auto shutdown features of Windows and Mac OS X. Features Automatic Voltage Regulation (AVR) to regulate brownouts back to usable levels without using battery power. Single-line RJ-11 phone suppression jacks protect modem, satellite receiver, or other peripherals with a standard dialup/DSL phone connection. 1000VA / 500 watt power handling ability supports a variety of sensitive computer, home theater, and other equipment. System VA: 1,000 VA; Backup Time at Full Load: 500 Watts @ 3 minutes; Backup Time at Half Load: 250 Watts @ 9 minutes; Automatic Voltage Regulation (AVR): Yes.