The TEC1-12715 Peltier Thermoelectric Cooler 15A Peltier Module is the simple application of Peltier Thermoelectric Effect. The module features 127 semiconductor couples in the area of 40mmx40mm.
Thermoelectric coolers also are known as TEC or Peltier module create a temperature differential on each side. One side gets hot and the other side gets cool. Therefore, they can be used to either warm something up or cool something down, depending on which side you use. You can also take advantage of a temperature differential to generate electricity.
1 x TEC1-12715 Peltier Module