Description: Its work is characterized by one side of the cooling and one side of the heat. Hot and cold on both sides of the temperature difference of 68 degrees When the two sides of the 12 volt power supply cooling chip are connected, there will be a temperature difference. When one side is cold and one side is hot, do not energize the refrigerator for a long time without a radiator. Otherwise, the inside of the refrigerator will be overheated and burned. Product can be used in a variety of refrigeration applications, hot and cold water dispensers, computer CPU, graphics card cooling, electronic refrigerator, electronic cooling headband, electronic cooling helmet, electronic hot and cold cup, etc. Used for computer cooling, 5 volts is enough, that is, any red line and black line in the line of computer power is 5 volts, the red line is the positive pole, the black line is the negative pole. Before installation, prepare a little thermal grease, find a dry battery, connect it to the two leads of the refrigerator, you can feel that one end is obviously cool and the other end is hot Specification: Material: Ceramic Rated voltage: 12v Rated current: 4.5A Power : 50--60W Maximum temperature difference up to 60 degrees Celsius Dimensions: 4 x 4 x 0.4cm / 1.57 x 1.57 x 0.2inch Line length : 28cm / 11.02inch Weight: 25 grams Package Includes: 1 Piece Semiconductor Refrigeration Film(2 Pack)