Provides surge protection for your entire home and its appliances by utilizing trusted, state-of-the-art tpmov (thermally protected metal oxide varistor) surge protection technology Includes three IModules with LED power and protection status lights IModules replace quickly and easily, eliminating the need to install a new SPD unit Type 3R rainproof enclosure for indoor/outdoor applications in plastic 25, 000 connected equipment for 10 years on appliances and Electronics