The TEC1-12706 Thermoelectric Peltier Cooler Module is a solid-state cooling plate that generates a dramatic temperature differential when powered by 12V DC. By passing current through its internal semiconductor couples, one side becomes ice-cold while the other side generates heat. Measuring a standard 40mm x 40mm, this 60W component is widely used in DIY mini-refrigerators, electronic water chillers, CPU cooling arrays, and portable beverage coolers.