A Peltier cooler is a device that uses the Peltier effect to transfer heat from one side of the device to the other, creating a temperature difference. The Peltier effect is the phenomenon of electric current producing heat or cold at a junction of two different materials.
When a direct current is applied to the device, one side becomes hot and the other side becomes cold. The hot side is connected to aluminum fins with fan to cool it faster. The Cold side is connected to processor of the ECU for the better performance
