Adopt TEC1-12706 semiconductor chilling plate, for use. Complete sealed structure, isolating the moisture in the air. Higher reliability than others. and mini in size, easy to install. Great DIY kit for electronic enthusiasts in semiconductor cooling applications. Name:Thermoelectric Peltier Module Kit Semiconductor Chilling Plate: TEC1-12706 Size: 40 x 40 x 3.75mm Internal Resistance: 2.1~2.4 ohm Max. Temperature Difference: 67°C Above Rated Voltage: 12V(Vmax. 15V, Starting Current 5.8A) Working Current: .=4~4.6A(Rated 12V) Refrigeration Power: Max. 50~60W Working Environment: -55~83°C Sealing Process: Standard 704 silicon rubber sealing all sides Fan: DC 12V Conduction Module Size: 60 x 45 x 21mm Water Block Size: 40 x 40 x 12mm Fan Size: 40 x 40 x 10mm Notes: The conduction cool module can frost when the temperature is under -25°C. TEC1-12706: one side with words is the refrigeration side, the other side is heat dissipation side. Must install heat sink or water-cooled radiator on the heat dissipation side; otherwise burn the Peltier. The DC power is not included in this kit, please prepare it by yourself. Colour:As Shown Material:plastic+Metal Package Contents: 1 x Conduction Module 1 x Water Block 1 x TEC1-12706 1 x Thermal Grease 1 x Fan 1 x Base Board 1 Pack x Screws Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.