Thank you for viewing. This is a Marukan Heat Ceramic 40W heater for small animal, bird, and reptile cages. Please be sure to read the following points if you are considering purchasing: ・It has been powered on only once for operational testing. It is a nearly new, used item. It functioned without any problems during the operational test. ・This product does not have a thermostat function. It will continue to heat once the switch is turned on, so temperature adjustment is essentially manual. Please be aware of this. ・There is no warranty. Please be aware of this. ・Please check the manufacturer's official product description to see if it can be installed in your cage. Also, please refer to the box photo on this page or the official product description to confirm whether it will operate properly in your intended environment. We are unable to provide explanations. ・We are sorry, but we do not accept price negotiations or adjustments to shipping dates.