Features: 1. Get ice cold in minutes or heat to boiling by simply reversing the polarity, used for numerous applications from CPU coolers to alternate power sources, or even for your own custom car drink warmer/cooler. Since they consist primarily of semiconductor material sandwiched between ceramic plates and have no moving parts 2. These devices must be used in conjunction with a heat sink to avoid burned 3. Each device is full inspected and tested 4. Fitted with 6-inch insulated leads Specification: Model: TEC1-12705 Size: 40mm x 40mm x 3.8mm Operates from 0~15.4V DC and 0~5A Rated Voltage: 12V Rated Current: 5A Operates Temperature: -40degree to 90degree Maximum Cooling Power: 54.7 W (Th=50degree), 49.28 W (Th=27degree) Maximum Temperature Difference: 75 Cel (Th=50degree), 68 Cel (Th=27degree) box: NO Color: White Package: 1 x TEC1-12705 Heatsink Thermoelectric Cooler Cooling Peltier Plate Module