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 14 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 normal mode surge conditions. Isobar's unique protection system combines large torroidal chokes, ferrite rod-core inductors, HF/VHF capacitors and metal oxide varistors into an exclusive isolated filter bank that removes EMI/RFI interference, even noise generated by other pieces of connected equipment. ISOBAR6ULTRAHG offers 6 high quality hospital-grade outlets arranged in one filter bank to prevent system crashes, reboots and performance problems common as noisy system peripherals are powered off and on. Surge suppression rated at 3330 joules. Widely spaced NEMA 5-15 hospital-grade outlets accommodate up to 3 large transformer plugs without blocking outlets. Diagnostic LEDs confirm power availability, line fault and protection status. Includes 15 foot AC line cord with high quality hospital-grade input plug, keyhole mounting tabs and a set of 4 child safety covers.