Feature: 1. PTC HEATER PLATE: After electrifying, PTC quickly converts electric energy into heat energy, which is conducted to the surface of aluminum shell within 10S, and can be dry burn for a long time. 2. 7X24 HOURS WORK: PTC heating plate can work continuously for 7x24 hours, and continuously provide heat source for more than 20,000 hours. The surface temperature is 70℃ and the cable length is 15cm. 3. CERAMIC CONSTANT TEMPERATURE HEATING: PTC heating element uses ceramic constant temperature heating technology to continuously output heat and work automatically at constant temperature. 4. TEMPERATURE RESISTANT: Aluminum PTC heating element uses polyimide film to wrap the chip inside, which is insulated and temperature resistant. Fine workmanship and good performance. 5. SAFE TO USE: Ceramic thermostatic plate has no open flame, toxic and harmful gases, so it can be used with confidence. Easy to use, high reliability, and suitable for use in humid environment. Specification: Item Type: PTC Heater Plate Material: Aluminum Alloy, PTC, Polyimide Film Size: Approx. 25x21x5mm / 1.0x0.8x0.2in Material: Aluminum Shell Heating Material: PTC Ceramic Heating Piece Material: High Temperature Resistant Wire Surface Temperature: 70℃ Cable Length: Approx. 15cm/5.9in Temperature Error: ±10℃. Package List: 5 x PTC Heater Plate Note: 1. Please supply power according to the voltage used. Using other voltages may cause fire and product damage.2. Please allow some error due to manual measurement.