ITEM NAME:2pcs SP1848-27145 TEC Thermoelectric Heatsink Cooler Peltier Plate Modu HUR Descriptio n Features: Thermal Elements formulated for optimum Seebeck (Power Generation) Can be used for power generation, cooling or heating applications These modules are manufactured specifically for power generation but they can also be used for cooling and/or heating applications. They are far superior than standard peltiers for power generation applications. Lead length: about 30CM Power generation chip size: 40MM * 40MM * 3.4MM One side of the word is close to the heat sink (cold end) No word on the side of the heat absorption surface (hot end) The red wire is connected to the positive pole, the black wire is connected to the negative pole, and the temperature difference can be used to generate electricity. Export version: SP1848-27145 use temperature between -40 degrees and 120 degrees Temperature: 120 degrees Product list: SP1848-27145 power generation film *2pcs We offer you what you need! SP1848-27145 TEC Thermoelectric Heatsink Cooler Peltier Plate Module.SP1848-27145 power generation film 2pcs. Power generation chip size: 40MM 40MM 3.4MM. Can be used for power generation, cooling or heating applications. but they can also be used for cooling and/or heating applications.