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 and energy saving. This PTC ceramic air heater has the characteristic of surface insulation and high security. Heating solid and gas, heating life of more than 3 years. Application: air conditioner, electric heater, instrument, general appliance, air curtain machine, humidifier, etc. Specification: Material: Aluminum Weight: 694g/11.2oz Heating material: PTC thermistor Heating mode: heat through the flow of air Heating life: over 3 years Power: 3000W Voltage: 220V (the bare line is connected, regardless of the positive and negative pole, the rated voltage can be) Size: 230*152*26mm/9.1*6*1inch (corrugation length186mm) Mounting Hole: 210*145mm/8.3*5.7inch Package List: 1 x PTC Ceramic Air Heater 1、Adopts of PTC ceramic heating element and aluminum tube, low thermal resistance, high heat transfer efficiency. 2、This product is a electric heater with automatic constant temperature and energy saving. 3、This PTC ceramic air heater has the characteristic of surface insulation and high security. 4、Heating solid and gas, heating life of more than 3 years. 5、Application: air conditioner, electric heater, instrument, general appliance, air curtain machine, humidifier, etc.