The ""greenest"" battery back-up in its class this state-of-the-art device delivers the worlds most reliable computer system and peripheral power protection. Significantly reducing energy consumption it utilizes a new proprietary charging system that's five times more efficient than any other in its VA range. Master and controlled outlets eliminate ""phantom loads"" by cutting power to printers scanners and speakers when your computer is not in use. Included PowerChute® safe system software smoothly shuts-down your workstation in the event of an extended power outage. Full data line surge protection ensures that all AC network phone and coaxial connected devices survive power spikes. Four stage LED status display indicates: On Line On Battery Replace Battery and Building Wiring Fault. Protection Type: N/A; System VA: 750 VA; Backup Time at Half Load: 11.3 minutes @ 225 Watts; Lines: N/A.