Cooling side is the side printed with SP1848-27145, another side is the heat absorption side.
semiconductor
Yrhrol Mini Air Conditioner DC 12V DIY Thermoelectric Peltier Refrigeration Cooling System Heat Sink Conduction Module Semiconductor Fridge Refrigeration Cooling System DIY Kit
High quality and DurableThe complete sealing structure isolates the moisture in the air,Using high-quality aluminum TEC1-12706 semiconductor cooling plate(The gravity of the upgraded heat sink is increased by 20%, which makes the heat dissipation stronger and smaller.)durable.
5pcs TEC1-12706 Heatsink Semiconductor Refrigeration Tablets 6A 12 Volt 60 Watt Thermoelectric Cooler Cooling Peltier Plate Module
Operates Temperature: -50C to 83C