This AC Dual Power Module with surge suppression provides power to voice, video, audio, and data distribution modules - routers, switches, modems, audio distribution modules, and security modules - mounted inside a Leviton Structured Media® Center enclosure. Equipped with TVSS (Transient Voltage Surge Suppression) outlets, the AC Power Module provides protection from transient voltage surges, and is intended for use where sensitive equipment would benefit from protection against the damage caused by such surges. A green indicator light on the face of the unit, when continuously lit, indicates surge protection is in effect. When the indicator light is off, the receptacle is no longer providing suppression. When protection is lost, an audible alarm will beep continuously. This power supply easily drops into a cutout in the bottom of the Structured Media Center. This design allows you to install the power required without taking up valuable space inside the enclosure.