The Sitecom VA UPS (Uninterruptable Power Supply) protects your PC and valuable data by supplying battery backup when your power fails. It protects your PC and peripherals against all kinds of electrical disturbances. The automatic voltage regulation (AVR) protects against voltage surges and dips. The built in high-power battery protects against sub-cycle outages and complete black outs. It can maintain power to your PC or server for up to 30 minutes. It’s smart utility prevents data loss and makes sure all running software applications are closed before your system shuts down. The UPS also has a data line protection port that eliminates distur bances carried through telephone, fax, modem and internet lines.