Features: Adopts of ceramic heating and aluminum tube, low thermal resistance, high heat transfer efficiency. This product is a electric heater with automatic constant temperature and energy saving. This ceramic air heater has the characteristic of insulation and high security. Mainly used in small instruments, small box space environment temperature heating. Application: air conditioner, electric heater, instrument, general appliance, air curtain machine, humidifier, etc. Specification: Material: Aluminum Weight: 141g/5oz Heating material: thermistor Heating mode: heat through the of air material: high temperature wire Heating life: over 3 years Power: 500W Voltage: 220V (the bare line is connected, regardless of the positive and negative pole, the rated voltage can be) Corrugation Length: 186mm Size: 230*32*26mm/9.1*1.3*1inch Package List: 1 x Ceramic Air Heater Note: color is random.