Roof Sentry® RS2 – This residential grade unit
automatically controls operation and energy usage of electric roof de-icing
cable. The RS2 requires two conditions to be present before it energizes roof
de-icing cable: both cold temperatures (on, 38ºF/3ºC; off, 48ºF/9ºC) and the
presence of run-off water from the roof in contact with its sensor wire. If only
one of the conditions exists, the control will not energize the cable. The
control is rated at 10 amps at 120 Vac, and requires one per cable. The RS2
control is CSA Certified