PTC heater is an automatic constant temperature, power saving electric heater. One of its outstanding features is the safety performance, that is, when the fan stops running due to failure, the power of PTC heater will automatically drop sharply due to insufficient heat dissipation. At this time, the surface temperature of the heater will maintain at about Curie temperature (generally around 230 ℃), so as not to produce the phenomenon of "red" on the surface of electric heating tube heater. Features: 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.Mainly used in small instruments, small box space environment temperature heating. 5.Application: air conditioner, electric heater, instrument, general appliance, air curtain machine, humidifier, etc. Specification: Material: Aluminum Weight: 141g/5oz Heating material: PTC thermistor Heating mode: heat through the flow of air Lead material: high temperature resistance 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 PTC Ceramic Air Heater Note: Lead color is random.