Automatically turns on de-icing cable to prevent the build-up of snow and ice on roofs and/or gutters. 2 power indicator lights, 1 in the plug and 1 at the heating cable receptacle. When moisture is detected and the temperature falls below 35 deg (degrees) Fahrenheit (2 deg Celsius), it energizes the cable, this is indicated by the unit's lit receptacle lamp. Package includes installation and operation instructions, sensor clips, and mounting screws for easy installation. 6' cord. Capacity 1200W, 120VAC.