In summary, a surge is as a brief increase in the voltage on an AC power, telephone/modem, network or coax line. Line noise is a distortion of the voltage on an AC power, telephone/modem, network or coax line. Both surges and lines are common and costly, which will degrade users’ internal electronic components. Surge Suppressors protect connected equipment by stopping damaging surges and filtering disruptive line noise. When a surge enters the surge suppressor (through the power, modem, network and/or coax lines) internal components (such as Metal Oxide Varistors) automatically absorb some of the excess voltage and safely channel the remaining voltage through the ground wire and away from the facility. The surge suppressor passes on clean power to connected devices, free of damaging surge voltage. A joule measures a surge suppressor's ability to absorb damaging surges and protect equipment. The more joules a surge suppressor has, the more protection it provides. Tripp Lite's Protect It! Surge Suppressors provide the highest levels of protection at competitive value pricing, making it the ideal choice for any application. Tripp Lite's Mobile Office Surge Suppressors let's you take high-quality protection on the road. Tripp Lite's ECO-Surge Energy Saving Surge Suppressors eliminate "phantom loads" by simply turning it off when it is not in use. Tripp Lite's Audio/Video Surge Suppressors include premium protection and a variety of connectivity options for all home- or business-theater applications. Tripp Lite's Safety Series Surge Suppressors provide high-visibility protection that enhances workplace safety. Tripp Lite's Industrial/Commercial Surge Suppressors combine office-grade surge protection in durable housings ideal for all heavy-duty applications. Tripp Lite Healthcare Surge Suppressors protect equipment in hospitals, clinics, dental offices and more.