Parameter: Rated Voltage: 120V Waterproof: IPX67 Frequency: 60Hz Package included: 1* Reptile Heat Pad, 1* 3M adhesive paper S: 6 x 8 inches, 120V, 8W L: 8x 12 inches, 120V, 16W XL: 8.5 x 18.5 inches, 120V, 24W How to attach double-sided 3M adhesive: 1. Lie heat pad on flat surface. 2. Turn on the heat pad 3. As pad heats, the pad will become smoother and flatter which will make it easier to apply the 3M adhesive. How to adjust the temperature of the pad: Rotate the switch clockwise to turn on, then continue rotating clockwise to adjust temperature from low to high. Then rotate the switch counter clockwise to turn off. HELPFUL HINTS: 1. When securing heat pad to terrarium make sure it is placed so that reptiles will not have direct contact with the heat pad. 2. For indoor use only. 3. Placing terrariums with an under-tank heat pad on household furniture may cause the furniture’s finish to discolor. Tikaton recommends using a terrarium stand. 4. For use on glass terrariums only. Do not use on wood, plastic, acrylic or any other type terrarium. Note: The heating temperature of the pad will be affected by the environment, best results are obtained at a room temperature of about 68-86°F (20~30 °C) in winter and less than 113°F (45°C) in summer.