Peltier elements generate heat or cold depending on the polarity.
The element consists of semiconductor material embedded between ceramic plates.
These elements must be used in conjunction with a radiator to avoid overheating and burns.
Equipped with the leads incl. cable lugs
Chip Model: TEC1-12705
Size: 40 * 40 * 3.8 mm
Power: 42.5 W
All technical data:
https://www.everredtronics.com/thermoelectric.TEC1.html