Description Thermoelectric Peltier Cooler modules are solid-state heat pumps that use DC current flow to transfer heat from one side of the device (cold side) to the other side of the device (hot side). The Peltier device used in this kit is the TEC1-12706 which is the most commonly used device. The TEC1-12706 has one side with printed fonts for cooling, and the other side for heating. It is necessary to dissipate heat well on the heating surface during operation. Therefore, it is equipped with an aluminum heat sink with thermal tape and a 12V 6000-rpm bearing cooling fan. If you want to achieve the best refrigeration effect, you can replace the larger cooling equipment to take away more heat. Notice: 1. Thermal grease must be used to install the heat sink. 2. Please do not turn on the power without installing the heatsink device, otherwise the TEC will be easily burnt out. 3. If you want to achieve the 12V best refrigeration effect, you can replace the larger cooling equipment to take away more heat. Specification Model: TEC1-12706 Thermoelectric Cooler Size: Approx. 40mm x 40mm x 3.8mm Operates Temperature: -30°C to 83°C Fitted with 6-inch insulated leads Cooling power: Qcmax 58-65W Model: Cooling Fan Bearing: Hydraulic Bearing Working Voltage: DC 12V Current: 0.07A Power: 0.86W Air flow: 6.7 CFM Speed: 6000rpm Noise level: 24.1dBA Life time: 40,000 hours Dimension: 40x40x10mm (LxWxH) Connector: 2-pin-2.5mm Wire length: 5.6 inch (150mm) Model: Aluminum Heatsink Material: Anodized Aluminum Size: Approx. 40mm x 40mm x 11mm Back Side: with Thermal Tape Package includes: 3x TEC1-12706 3x 40mm Fan 12V DC 3x Aluminum Heatsink Gold