... mosquito killer, car's heater, humidifier, de-humidifier, heating-plate, massager, physical therapy machine, hot glue-gun, hair crimper ... under 260, PTC is very suitable as a heating element. Notice in appliance.1) The surface temperature ... most appliances.2) It can be used for heating liquid, and its no problem when liquid was ... dried.3) It can be used for heating air with fan blowing, and its no ...