[How to Use]: The Peltier side (with characters) faces the heat dissipation surface (cold end), the side without characters is placed on the heat sink (hot end), the red wire is connected to the positive pole, and the black wire is connected to the negative pole. When there is a temperature difference, it can generate electricity. [High Reliability]: Thermoelectric Peltier modules have no additional moving parts, are easy to move, lightweight, have a long service life, high reliability, and no pollution. [Note]: There will be a temperature difference on both sides of the 12V cooling chip. When one side is cold, the other is hot. Don't power the refrigerator for an extended period without a cooler. Otherwise, the inside of the refrigerator will overheat or burn. [Heating Principle]: When heat energy is emitted from the low-temperature side through thermoelectric generation, the part of heat energy flowing into the equipment does not emit heat but is converted into electrical energy in the equipment and outputs current. [Convenience]: The product has no moving parts, which is convenient for moving and experimenting. When there is a temperature difference between the two ends of the thermoelectric module, the modified module can generate continuous direct current, and the greater the temperature difference between the two ends of the module, the greater the generated direct current, and the thermoelectric conversion efficiency will also be improved. When in use, the flexible graphite heat-conducting paper with high-temperature resistance and good thermal conductivity is pasted on both ends of the module, which can increase the module's thermal conductivity and the device's efficiency and durability. Color: silver Material: aluminum Size: 40mm x 40mm x 3.41mm Cable length: about 300mm Package Contents: 1 x High Temperature Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture to be slightly different from the real thing. The allowable measurement error is +/- 1-3 cm.