Features: * Controller for the roof and gutter de-icer cable * Controller requires two conditions to be present before it will energize the roof de-icing cable * It requires cold temperatures and the presence of run-off water from the roof in contact with the sensor wire * If only one of the conditions exists, the control will not turn on the cable * A switch inside the house can control the box What"s In The Box: * Easy Heat RS2 Roof Sentry Controller