Silicon rubber is used as an insulator with a silicon heating pad, and the inside uses nickel chromium alloy line as an electric heating elements, which can be tightly contact with the heated object. The insulation layer is composed of silicon rubber and glass fiber cloth, which has high insulation performance. The electric heating board has the characteristics of high heating, uniform temperature, high thermal efficiency, good toughness, convenient use, safe, waterproof, and other characteristics. Heating blankets can be used for hybrid insulation (oil barrel heater) of industrial equipment pipelines, storage tanks, etc., which are widely used in car fuel tanks, water tanks, and battery anti -freezing insulation. Silicone heating pads are convenient, safe, long -lasting, light, and flexible. Due to excellent dielectric strength, the use of electricity heating in winter can greatly reduce energy consumption. maximum temperature: 200 work voltage: DC 12V 24V power: 30w 12W resistance value: 4.8 you can use different voltage as needed as needed To get the corresponding power. line length: about 20cm size: 100 x 100mm Material: Silicone Rubber colour: red Package Contents: 2 x Heating Pad Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.