... for electronic equipments, heating for electronic controll case, room heater.3. Notice in appliance. Blowing type:1)This type of PTC air ... to blow, usually the faster is the air blowing speed, the larger is the power;2)When PTC is used in very low ambient temperature ... com\en\products5.htmlOther PTC air heating element, please visit the website marked in the picture: room warmer PTC air heating element