REPTI ZOO Upgrade Reptile Heat Mat with Thermostat - Reptile Heating Pad with Temperature Control for 10-40 gal Tank Reptiles Amphibians Hermit Crab Snake Lizard - Upgraded Version - Dual temperature protection with built-in 122 control smart chip and independent adjustable temperature controller. Made with environmentally friendly carbon film heating material, fast heating and even heat distribution. - Multi-Size Optional - 6*8 inch (11w) recommend for 1020gal terrarium size; 8*12 inch (23w) recommend for 3040gal terrarium size, for glass terrariurm only. - Simply Heating Set Up - Easy to set by 3-button interface of controller to choose your desired temperature setting. Digital display available in Fahrenheit and Celsius. - Easy to Use - Comes with 3M adlhesive paper, the heat mat not only use at bottom of terrarium, but also can paste on the sides of terrarium. - Professional and Reliable Heat Pad - The temperature can be controlled at 682012250, suitable for reptile, small animal and gardening.