TEC1-12715(""TE"" is the abbreviation of Thermo-Electric) Max cooling power: 136.8W • Precise temperature control. Solid state, vibration free, noise-free. Simple to install and operate. Each device is fully inspected and tested. Fitted with 14cm insulated leads . • Perimeter sealer for moisture protection. This device must be used in conjunction with a heat sink to avoid burned. Get ice cold in minutes or heat to boiling by simply reversing the polarity, used for numerous applications such as cooling your CPU, video card, NANO Reef, laser diode, CCD camera, picnic cooler, beverage cooler , alternate power sources, or even for your own custom car drink warmer/cooler. • Operates from 0-15.4 volts DC and 0-15 amps ?Tmax : greater or equal 68 °C Operates from -50 °C to 100 °C Size: 40mm x 40mm x 3.6mm Common specifications of thermoelectric coolers: 1.Operating temperature range: -50 ~100? 2.Flatness /- 0.05mm 3.Height of thermoelectric module tolerated /- 0.2mm 4.Maximum compressive load: 1MPa 5.Lead wire: 150mm as defaut. • This Peltier works very well as long as you remove the heat from the hot side. After turning on the device, the hot side will heat quickly, the cold side will cool quickly. If you do not remove the heat from the hot side (with a heat sink or other device), the Peltier will quickly reach stasis and do nothing. We recommend using an old computer CPU heatsink or other block of metal to pull heat from the hot side., use epoxy on peltier module and connect the heat sinks together better Copper past