【RANGE OF APPLICATION】Air Heater ,air conditioner ,electric heater ,instrument ,general appliance ,air curtain machine ,humidifier ,etc . 【NOTE】We strive to provide you with the highest quality product and the best customer experience .Your nice comment on our product page will be a great encouragement to improve our service .if you're not entirely satisfied ,please just feel to contact us at any time . 【GOOD HEAT EFFECT】It adopts of PTC ceramic heating element and aluminum tube ,low thermal resistance ,high heat transfer efficiency . 【ENERGY SAVING】This product is a electric heater with automatic constant temperature and energy saving .With mounting holes ,easy to install . 【SAFTEY AND INSULATION】This PTC ceramic air heater has the characteristic of insulation and high security .