Features: Application appliances: Incubator Air conditioners, hot air curtains, dehumidifiers, dryers, dryers, heaters, for cars.. PTC heater is also called PTC heater, which is composed of PTC ceramic heater and aluminum tube. This type of PTC heater has the advantages of small thermal resistance and high heat exchange efficiency, and is an automatic constant temperature and power saving electric heater. The outstanding feature is the safety performances. Under any application, the surfaces of the electric heating tube heater will not be reddened, which may cause burns, fires and other safety hazards. Three types for you to choose! The largest power is 80w. Specifications: Material: Aluminum Size 1: Approx.9.5x2cm/3.74x0.79in Size 2: Approx.9.5x2cm/3.74x0.79in Size 3: Approx.8.5x8.7cm/3.35x3.43in Type: for 220V, for 110V, For 220V/12V (optional） Package Includes: 1x Incubator Heater note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.