The 7-Outlet Protect It! SUPER7TEL15 Surge Suppressor from Tripp Lite offers AC and phone line surge suppression for comprehensive protection of workstations, desktop PCs, telecom systems and other sensitive electronics. Heavy grade AC surge suppression shields connected equipment from damage and performance problems due to transient surges. A set of RJ-11 telephone line suppression jacks protect dialup and DSL modem lines, fax machines and cordless phones. The SUPER7TEL15 comes with an extra-long 15 foot cord with space-saving angled plug and diagnostic LEDs to warn of wiring problems and suppressor damage. It also boasts heavy grade AC suppression rated at 1672 joules which shields equipment from surges and line noise.