Facon 8.0″x25″ RV Tank Heater Pad with Automatic Thermostat Control, Up to 50…
[Exclusive Technology] Facons world-famous Tank Heater Pads. Built-in thermostat is set to turn Itself on at 45F(5 degrees) and turn itself off at 68F( 5 degrees). The heater pad will not heat the tank if the temperature is not near freezing.