For more than 20 years, America's leading companies have trusted Tripp Lite's Isobar Premium surge and noise suppressors to protect sensitive computer, networking and telecom equipment. With more than 16 million satisfied customers, the Isobar remains the world's #1 selling premium surge suppressor. Loaded with a generous combination of high quality components, near indestructible all-metal case and unique noise filtration system, the Isobar offers the highest level of protection attainable in a multi-outlet strip. Robust surge suppression circuits with sine-wave tracking offer extreme levels of protection against the heaviest surge conditions exceeding IEEE 587 category A & B specifications and reducing 6,000V test surges to harmless levels under 35 volts. Isobar's unique protection system combines large torroidal chokes, ferrite rod-core inductors, HF/VHF capacitors and multiple layers of metal oxide varistors into exclusive isolated filter banks that remove EMI/RFI interference, even noise generated by other pieces of connected equipment. ISOBAR825ULTRA offers 8 outlets arranged in four filter banks to prevent system crashes, reboots and performance problems common as noisy system peripherals are powered off and on. Surge suppression rated at 2350 joules/97,000 amps offers network-grade protection. Widely spaced NEMA 5-15 outlets accommodate up to 4 large transformer plugs without blocking outlets. Diagnostic LEDs confirm power availability, line fault and protection status. Includes 25 foot AC line cord with space-saving angled input plug, keyhole mounting tabs and a set of 4 child safety covers. - Tripp Lite's ISOBAR is the world's #1 selling premium suppressor series with more than 16 million satisfied customers and a safety-tested history of 20+ years. - Robust surge suppression with sine-wave tracking protects against the heaviest of surge. conditions, exceeding IEEE category A&B specifications and reducing 6,000V test surges to harmless levels less than 35 volts. - Multi-component suppression circuits combine torroidal chokes, ferrite rod-core inductors, HF/VHF capacitors and multiple layers of metal oxide varistors into exclusive isolated filter banks that remove EMI/RFI interference, even noise from other pieces of connected equipment. - 8 outlets arranged in four filter banks prevent system crashes, reboots and performance problems common as noisy peripherals are powered off and on. - Network grade surge suppression rated at 2350 joules/97,000 amps. - Widely spaced outlets accommodate up to 4 large transformer plugs without blocking outlets. - 3 LED indicators confirm suppressor operation and site wiring status, plus warning of suppressor or electrical fault conditions. - Lighted power switch confirms power on/off status. - 25 foot AC line cord with space-saving angled input plug. - Keyhole mounting tabs allow permanent installation. - Set of 4 outlet covers safely seal off unused outlets.