Eight-outlet Premium Surge Suppressor. Isolated filter banks eliminate interference between connected equipment often eliminating computer lock-ups, data errors, audio static and video interference. Four filter banks. Cascade circuitry provides increasing levels of noise protection with each successive filter bank, allowing users to select greater protection for more sensitive equipment. Indestructible all-metal housings won't burn, melt or crack. Three diagnostic LEDs. $50,000 Ultimate Lifetime Insurance.