Under tank heater designed to heat the ambient air temperature of your terrarium an average of five to 10 degrees (F) warmer than room temperature. Solid state nichrome heating element with ULCSA approved power cord. Costs only pennies a day to operate. Product Description This under Fish Tank aquarium heater is designedfor fish tank heating.With our high thermal conversion rate material of farinfrared PET heating film, the heating pad is able to control powerautomatically , keeping temperature in a certain range even in the coldest ofclimates which provide maximum safety toyou and your pets.In addition, property of our PET heating film makes the pad durable and flexible. We alsooffer OEM fish tank waterproof heater.With you requirement, we can customizedthe product you need Our Fish Tank aquarium heater have also been designed tomeet CE, RoHS, Ul, ETL standards. 1. Carbon crystal printing, with far infrared rays radiant heat. 2. Ideal for reptiles, amphibians, hermit crabs, fish, birds, cats, dogs, rabbits etc. 3. 3. With latest Positive Temperature Coefficient (PTC) technology, it is self-regulating, it is more safe and energy saving. 4. With PVC feature, it is waterproof .anti-chew and extremely durable 5. 42 surface temperature, make pets feel warm and cosey 6. OEM service available, your own design is welcomed. 7. Suitable for all kinds of turtle boxes, glass boxes, reptitles and pets keeping warm. 8. Safe heating without overheat problem