Features: 1.Self-adhesive design for easy of use 2.Built-in thermostat, 100°F automatic work, 140°F stop working, for your tank heating to provide convenience and power savings 3.RV heating pads are designed to protect RV water tanks from freezing, keeping the water flowing Specification Quantity: 2pcs Pad size: 17.9" × 11.8" Volts: 110-120v Power:60 W Power cord length: 10ft Turn on at: 100°F Turn off at: 140°F Warm notes: 1. Heater pads must be used attached to or wrapped around the holding tank 2. Make sure nothing is placed on top of the heating pad when using it, the pressure of the object may damage the heating unit 3. Unplug the heater pad and do not remove it when the outside temperature is above freezing or when the RV is not in use 4. Make sure there is liquid in the tank when using the heating pad and that the liquid is not frozen, otherwise the heating pad will not work 5. To ensure adhesion, do not use the heating pad until 24 hours after it has been installed