-Apply for non-conductive surfaces: plastic, rubber, pvc material etc. -Pls ensure proper voltage before use -If two or more heater pads are used, they must be connected in parallel -Its automatic control, will not turn on if environment temperature above 45° F. Put it into refrigerator for a while if you want to test in case outer temperature above 45° F. Or you can wait till freezing weather. We provide 1year warranty for the model. Any problem feel free to contact us. Packing include 1pcs 12"x18" tank heater pad

• For winter convenience- Provides constant source of water for RV Trailer motorhome etc.
• Reticular carbon fiber design- heated evenly & efficiently, giving more stable performance, cut your energy use.
• Built in thermostat- Turn on when outside temperature is about 45° F( + - 5 degrees) and turn off at 65° F(( + - 5 degrees)), makes all-year-round automatic operation possible
• Self adhesive- Easy installation, 3mm foam insulation pad, no extra facility required.
• Warranty- CSA certified, 1year warranty for any problem confirmed as manufacturer's defect.

For winter convenience- Provides constant source of water for RV Trailer motorhome etc.RV Water Tank