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 New Housing Material: Aluminum + Plastic Heating Material: PTC Thermistor Heating Mode: heat through the flow of air Rated Power: 250W Rated Voltage: 220V (the bare line is connected, regardless of the positive and negative pole) Lead Material: High Temperature Resistance Wire Heating Life: over 3 years Size: Approx. 140*32*26 mm / 5.5*1.3*1.0 inch Ripple Length: Approx. 96mm / 3.8 inch Mounting Hole Distance: Approx. 120*24 mm / 4.7*0.9 inch Mounting Hole Size: Approx. 10*4 mm / 0.39*0.15 inch Weight: Approx. 87g / 3.1 oz Package list: 1 * PTC Ceramic Air Heater Note: 1. The color of lead wire is random. 2. With 150 degrees normally closed temperature control protector.