Tripp Lite's LC 1800 Line Conditioner provides automatic voltage regulation for computers, copiers, laser printers, fax machines and other sensitive electronic equipment. 1,800 watts of voltage regulation correct brownouts and overvoltages (87 to 140 volts) back to computer-grade 120 volt AC. The unit has 6 outlets, 6-ft. cord, diagnostic LEDs, and built-in surge and noise suppression. Isolated filter banks stop interference between connected equipment.