constant temperature, self-controlled temperature, energy saving, no danger of over temperature, wide voltage Some appliances. dryer, air heater, air condition heater, mosquito killer, car's heater, humidifier, de-humidifier, heating-plate, massager, physical therapy machine, hot glue-gun, hair crimper, hair straightener, coffee /milk warmer, water boiler, and so on. If the surface temperature of ...