Features Superior Cooling Performance: Equipped with a 12715 refrigeration module, this thermoelectric cooler ensures optimal cooling efficiency for your DIY projects Enhanced Airflow Design: The large cooling block maximizes air circulation, providing rapid cooling for all your refrigeration needs Efficient Heat Transfer: Featuring 4 hollow copper pipes filled with refrigerant, this system delivers heat away quickly, boosting cooling effectiveness Versatile Applications: Ideal for building a mini fridge, portable air conditioner, or a cooling solution for pets, enhancing your creative possibilities Impressive Cooling Results: Tested in a 10L foam box, it can lower temperatures from 23℃ to 0.6℃ in just 30 minutes, reaching as low as -2℃ for maximum efficiency Features: 1、This thermoelectric cooler uses 12715 refrigeration module which has better cooling effect 2、Cooling block has large area that can more air for quick cooling 3、Four hollow copper pipes with refrigerant inside would deliver heat fast for higher cooling efficiency 4、It can be used to make small fridge, mini air conditioner or cooling device for pet 5、Tested with a 10L foam box that 23℃ can drop to 0.6℃ in half an hour, minimum to -2℃ Specification: Features: This thermoelectric cooler uses 12715 refrigeration module which has better cooling effect. Cooling block has large area that can more air for quick cooling. Four hollow copper pipes with refrigerant inside would deliver heat fast for higher cooling efficiency. It can be used to make small fridge, mini air conditioner or cooling device for pet. Tested with a 10L foam box that 23℃ can drop to 0.6℃ in half an hour, minimum to -2℃. Specification: Cooler Size: 12*19.5*12cm Fan Size: 6*6cm Power: 180W Power Supply: DC12V, 20A (not included) Max. Cooling Volume: 20L (5 to 8℃ lower than room temperature) Weight: 840g(approx.) Package Includes: 1 x Thermoelectric Cooler Package List