Features The four hollow copper tubes with refrigerant inside will quickly provide heat for higher cooling efficiency. The thermoelectric cooler adopts 12715 refrigeration module, which has better cooling effect. Using high quality aluminum alloy +ABS material, low noise, work stable, convenient to use. It can be used to make small refrigerators, mini air conditioners or cooling devices for PET. The cooling block has large area that can contact more air for quick cooling. Specification: Item Type: Thermoelectric Cooler Material: Aluminum Alloy + ABS Color: As shown in the picture Application: Semiconductor refrigeration, cooling device Fan Size: Approx. 6x6cm / 2.4x2.4in Power: 180W Power Supply: DC12V 20A Package List: 1 x Thermoelectric Cooler Note: 1. The cooling block has a large area and can contact more air for rapid cooling.2. Please use it in a confined constant temperature space, 23°C will drop to 0.6°C within half an hour, minimum ‑2°C3. Do not contact conductive liquids in a large area. Package List 1 x Thermoelectric Cooler