Features Description. 1.PTC ceramic air heater adopts PTC ceramic heating element and aluminium tube, with low thermal resistance, high heat transfer efficiency, stable performance and high practicality. 2.Ceramic air heater is an automatic electric heater with constant temperature and energy saving.PTC ceramic air heater has automatic energy saving, new quality, reliable and safe quality. 3. This PTC ceramic air heater is easy to install and maintain, with excellent performance, and I believe it can bring convenience to your life. 4. It is suitable for air conditioners, electric heaters, meters, general appliances, wind curtains and humidifiers, with wide application and obvious effect. Specification. Material. Aluminium alloy Weight: 47g / 1.7oz Power: 50W  Voltage: AC / DC 12V Surface temperature: 200±10°C Size: 95*31*25mm/3.7*1.2*1inch  Packing list: 1 x PTC ceramic air heater Caution. Be careful when using. This is a surface energized PTC heater. When the heater is operating, the aluminium parts are electrically conductive. Package List