12"x18" RV Water Tank Heating Pad 12V/13.5V, Fits Up to 50 Gallons Fresh Water, 2 Pack RV Holding Tank Heater Pad with Thermostat, for Camper, Trailer, Motorhome, Marine, Winterizing

[Thermostat Control] With built-in thermostat control set at 41°F-59°F (5°C-15°C), SHILI RV water tank heater pad will automatically turn on at 41°F and turn off at 59°F. It prevents your tank from freezing and keeps you supplied with water from the tank, without draining your battery.

[Wide Application & Easy Installation] Measuring W 12" x L 18", it's designed for fresh water tanks, grey water tanks and black water tanks. Suitable for caravans, campers, trailers, motorhomes, boats and marine. Installation can be completed in just a few steps!

[Temperature Protection] If the internal temperature rises sharply due to some abnormal reasons, once it exceeds 158℉ (70℃), the internal temperature protector will cut off the power supply immediately (and we use flame-retardant material for the protective foam).

[High Efficiency] We use high quality heating wire, and it's closely arranged for better heating effect. 6mm thick thermal insulation material can have better heat retention.

[Attention] Our heating pads are designed for 12V/13.5V RV batteries, make sure your RV power supply is 12V/13.5V instead of 24V/48V. Make sure that there is water in the tank when the heating pad is working.