No flame, no redness, no harmful smell. Some products contain overtemperature protection compatible with overall surface electrical insulation.Can heat solid and gas, meeting your different heating demands, reliable in use.Using ceramic constant temperature heating technology, continuous heat output, automatic constant temperature work.After electrification, the electric energy is converted into heat energy within 0.1s and transmitted to the surface of the aluminum shell within 30S.Continuously provide heat source with a life of more than 10,000 hours.Suitable compatible with: Disinfection, Heater, Humidifier, Dry Cleaner.Specification:Mounting hole size:4mmHeat material: PTC ThermistorHeat methods: heat by air flowLead wire: high temperature lineThe length of lead wires : 200mmThe length of wires : 10mmSurface insulate: NoSize Chart:9cmx6cmx6cm/3.54inchx2.36inchx2.36inch20cm/7.87inchPackage Includes:1 x HeaterNote:Please allow slightly errors due to manual measurement and different monitors.