【Usage】: One side of teg peltier(with word) is close to the heat dissipating surface (cold end), the non-word side is placed on the heat absorbing surface (hot end), the red line is connected to the positive pole, the black line is connected to the negative pole, and the power can be generated when there is a temperature difference. | 【High Reliability】: SP1848-27145 thermoelectric peltier teg module has no extra moving parts, easy to move, light weight, long life, high reliability and no pollution. | 【Note】: The temperature difference will appear on both sides of the 12 volt power supply cooling chip. 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 or burn. | 【The Principle of Heat Generation】: When the thermal energy is discharged from the low temperature side through the thermoelectric power generation piece, part of the thermal energy flowing into the device does not exotherm, and becomes electric energy in the device, and outputs DC voltage and current. | 【Convenience】：The product has no moving parts, is easy to move, and is convenient for experimentation