Features:Adopts of PTC ceramic heating element and aluminum tube, low thermal resistance, high heat transfer efficiency.This product is a electric heater with automatic constant temperature.This PTC ceramic air heater has the characteristic of automatic energy saving. Easy to install and maintain, superior performance. Application: air conditioner, electric heater, clothes dryer, humidifier, etc.Specification:Material: AluminumWeight: 46g/1.6ozVoltage: AC/DC 220V Power: 100W Surface temperature: 20010 Size: 95*31*26mm/3.7*1.2*1inch Package List:1 x PTC Ceramic Air HeaterNote:Be careful when use it.This is a kind of surface electrified PTC heater. When the heater is working, the aluminum parts are conductive.