... installation 3.stable and secure 4.temp. self-control 5,long lifetime PTC heater, self-controlling, lower cost, easy ... to assemble, long lasting lifeMosquito destroyer and spice evaporatorUse:It is used to ... heaterThe temperature can be controlled by PTC itself.Long life, stable temperature, double voltageLittle higher costUsed in most productsResistor heaterHeat ...