The thermostat automatically turns this heater on when the temperature drops and turns off when it rises to eliminate winter weather-related transmission problems forever. Saves on electricity and assures you of a high-quality picture all winter long. Easy peel-and-stick installation for Starband and Direcway dishes. NOTE: This item was designed for use with DirecWay dishes. On a Starband dish, it is not a perfect fit but still works. Test fit before installing. Once installed, there is no refund due to size and fit issues.