Feature: 1. CERAMIC THERMOSTATIC HEATING: PTC heating element utilizes ceramic thermostatic heating technology for continuous heat output and automatic thermostatic operation. 2. CONTINUOUSLY PROVIDE HEAT SOURCE: Aluminum PTC heating element can work 7x24 hours without interruption, providing a continuous heat source life of over 20,000 hours. Use voltage is , lead length is 15cm. 3. HEATS UP QUICKLY: After energized, PTC quickly converts electrical energy into heat energy, which is conducted to the surface of the aluminum case within 10S and can be dry fired for a long time. 4. INSULATION AND TEMPERATURE RESISTANT: PTC element uses polyimide film wrapped chip inside, insulation and temperature resistance. Long service life and temperature stability, easy to use, high reliability. 5. SAFE TO USE: Aluminum PTC heating element has no open flame, no redness, no toxic and harmful gas, suitable for use in humid environment, safe to use, you can rest assured to use. Specification: Item Type: PTC Heating Element Material: Aluminum Alloy, PTC, Polyimide Film Size: Approx. 25x21x5mm / 1.0x0.8x0.2in Shell Material: Aluminum Shell Heating Material: PTC Ceramic Heaters Lead Wire Material: High Temperature Resistant Wire Lead Wire Length: Approx.15cm/5.9in Temperature Error: ±10℃. Package List: 5 x PTC Heating Element Note: 1. Please follow the use of voltage for power supply, the use of other voltage may cause fire and product damage.2. Please allow some error due to manual measurement.