This item is not meant to be used on its own. It is used in conjunction with a heat lamp. It prevents the heat lamp from getting too hot, maintaining a comfortable temperature. It has been stored indoors, but I am selling it because I don't use it. Although it is new and unused, please refrain from purchasing if you are concerned about it being a storage item. No claims and no returns are accepted. I am also selling LL size and flexible type Usadan heaters. I am also selling bulb-type heaters. Please contact me if you would like to purchase them together. Minimal Thermo with a temperature control range of 15-40°C, supports up to 310W. - Model Name: Minimal Thermo - Power Supply: AC100V (50/60HZ) - Maximum Output: Up to 310W total - Control Temperature Range: 15-40°C ±1°C Thank you for viewing.