Intermatic's SMART GUARD® provides coverage of your customer’s big investment equipment, from appliances and computers to HVAC equipment and TVs. This innovative Surge Protective Device uses IMODULE® with LED lights for quick and easy status indication. A blue light indicates the Surge Protective Device unit is ON and a green light indicates surge protection is active. Trusted, state-of-the-art TPMOV® (Thermally Protected Metal Oxide Varistor) surge protection technology eliminates the potentially hazardous failure modes that are commonly associated with standard MOV technology. Type 1 applications include outdoor installations before service entrances and utility meter cabinets. Type 2 applications include installations after service entrances. UL Listed to ANSI/UL 1449, 4th Edition.