The WB-11-LIGHT is the perfect surge protection unit for rack installations that need clean, safe power. Its compact 1U chassis is packed with 11 surge protected outlets, noise filtration to improve audio/video performance – even dual LED lights that cast a soft glow so you can see the equipment. Integrated “ears” make for quick installation into your equipment rack. Two LED light tubes are perfectly place on the front panel to illuminate your equipment. Each light tube extends 2.5 inches and contains 5 LEDs. The design tucks away and pulls easily when needed, plus there is a switch to adjust the light intensity. Sensitive A/V equipment is negatively impacted by noisy appliances and other electronics that create interference on the AC line. All WattBox power conditioners feature noise filtration that cleans up this "dirty power" to deliver the purest A/V experience possible. By lowering the audio noise floor and reducing hum, you hear exactly what was intended. Video performance can see an improvement too - with reduced power-related artifacts on HD displays. Surges can come from a variety of sources - from fluctuations at the power company to catastrophic events such as lightning. This excess energy can damage your connected equipment if not properly protected. The Joule rating is a measure of a surge protector's ability to "clamp" this excess energy down to a safe level - the higher the rating, the more protection your equipment has. MOVs, or Metal Oxide Varistors, are surge protection components that dissipate excess energy in the form of heat. Under extreme conditions, lower quality MOVs can get so hot they catch on fire! WattBox power conditioners feature ceramic-encased MOVs to protect not only your system but your home as well. As an added precaution, in the event of a catastrophic spike, a thermal fuse completely disconnects AC power from your system to stop the surge in its tracks before it can get to your connected equipment. All three "legs" of the power (hot, neutral and ground) will disconnect for unsurpassed equipment protection.