This PTC ceramic air heater has many advantages, such as simple structure, constant temperature, easy to install, safe to use and can be applied to air conditioner, electric heater, instrument equipment etc.Features:1. Adopts of PTC ceramic heating element and aluminum tube, high heat transfer efficiency.2. Surface insulation, automatic constant temperature and energy saving, safe to use.3. Comes with a lead wire, which is high temperature resistant. It can be easily used to heat solids and gases.4. Simple structure with mounting hole, easy to install and long service life over 3 years.5. Widely used in water boiler, air conditioner, electric heater, instrument equipment. Also used for car and electronic components preheating.Specification:Condition: 100% Brand NewHousing Material: Aluminum + PlasticHeating Material: PTC ThermistorHeating Mode: heat through the flow of airRated Power: 250WRated Voltage: 220V (the bare line is connected, regardless of the positive and negative pole)Lead Material: High Temperature Resistance WireHeating Life: over 3 yearsSize: Approx. 140*32*26 mm / 5.5*1.3*1.0 inchRipple Length: Approx. 96mm / 3.8 inchMounting Hole Distance: Approx. 120*24 mm / 4.7*0.9 inchMounting Hole Size: Approx. 10*4 mm / 0.39*0.15 inchWeight: Approx. 87g / 3.1 ozPackage list:1 * PTC Ceramic Air HeaterNote:1. The color of lead wire is random.2. With 150 degrees normally closed temperature control protector.