Tripp Lite's Traveler In-Line surge suppressor features a high 1130-joule rating to handle even the strongest surges (820 joule rating at 240V AC). In-line design, over current protection and 120/240V compatibility makes this surge suppressor ideal for notebook computers and PDAs. Integrated phone line protection allows you to safeguard tel/modem and AC connections with a single unit. "Protected" and "Over Current" LEDs let you instantly know whether your wall jacks have potentially damaging signals.