Feature: 1. PTC Heating Plate: PTC quickly converts electrical energy into heat energy after energizing, and conducts to surface of aluminum shell within 10S, can be dried for a long time. 2. Automatic Constant Temperature: Using ceramic constant temperature heating technology, continuous output of heat, achieve automatic constant temperature work. 3. Good Insulation: The chip is wrapped with polyimide film inside, which is insulated and temperature resistant, ensures long term stable heating performance. 4. Long Service Life: The heating element can work 7x24 hours, and continuously provides heat source with a life span of more than 20,000 hours. 5. Wide Application: The heating plate has no open flame, no redness, no harmful gases, and is suitable for use in humid environments, can be used in various occasion. Specification: Item Type: PTC Heating Element Material: Aluminum alloy, PTC, polyimide film Shell Material: Aluminum shell Heating Material: PTC ceramic heating plate Lead Material: High temperature resistant wire Size: Approx. 35x15x5mm/1.4x0.6x0.2in Use Voltage: 220V Surface Temperature: 150℃ Lead Length: Approx. 15cm/5.9in Temperature Error: ±10℃ Dry Burning Power: 8W. Package List: 5 x PTC Heating Element Note: Power supply regardless of positive and negative poles.