①. Upgrade your thermal management projects with a PTC heating plate, which is engineered with an aluminum alloy shell and PTC ceramic heating element for performance and reliability. This compact heating solution measures approximately 25 x 21 x 5 mm and features high temperature resistant wire for efficient heat transfer and stable performance. ②. Key Features: Aluminum alloy construction: Provides durability and longevity, making it a choice for your heating needs. PTC ceramic heating technology: Converts electrical energy into heat energy, providing consistent and efficient heat output. Insulation temperature resistance: Polyimide film wrapping the chip inside ensures long-term stable heating performance and prevents overheating. Long service life: The ceramic thermostatic plate can operate continuously for 7x24 hours, providing a heat source for over 20,000 hours. Safety features: No open flame, no reddening, no toxic or harmful gases, making it suitable for use in humid environments. Compact design: With dimensions of approximately 25x21x5 mm, this heating plate is suitable for various applications, including drying and heat management projects. ③. Specifications: Material: Aluminum alloy, PTC, polyimide film; Size: Approx. 25x21x5mm / 1.0x0.8x0.2 inches; Heating material: PTC ceramic heating element; High temperature resistant wire; Surface temperature: 200℃; Cable length: Approx. 15cm / 5.9 inches; Temperature error: ±10℃. ④. Package includes: 5 x PTC heating plate.