Includes 3 battery supported outlets for computer, monitor and one vital system peripheral, plus 3 additional surge suppression-only outlets for printers and other system accessories not requiring battery support. Communications port with contact closure messaging enables optional unattended system shutdown without data loss in the case of extended power failure. Built-in single line RJ11 phone suppression jacks protect modem, fax machine, cordless phone or other peripheral with standard dialup phone connection. Built-in audible alarm and front panel LEDs offer continuous status information regarding line and battery power operation. 525VA / 300 watt power handling ability supports entry-level PC systems for several minutes during power fail conditions.