Perfect for reptiles, amphibians, and small animals. This dream heater with multiple safety devices optimally maintains the temperature inside the cage. ● Fully automatic temperature control (surface temperature 42°C ± 5) ● Far-infrared heating mat ● Self-extinguishing function ● For 30-40cm tanks (equivalent to 8W) *Not waterproof, so cannot be used inside the cage. Please use it on the outside. I bought it for my hamster and used it for two seasons. There are some minor scratches as it was placed under the cage, but it works fine (^-^) Please refrain from purchasing if you are concerned about this. *Operation confirmed. #HalloweenOnMercari