1. SEMICONDUCTOR REFRIGERATION KIT: Semiconductor coolers are a form of solid state cooling that incorporates both semiconductor Technologies and electronic assembly techniques. Simple, good practicability. Can cool heat easily and quickly. 2. WIDE COMPATIBILITY: Application for small space cooling, air cooling dehumidification, semiconductor refrigeration learning theory, etc. This DIY electronic single core cooler production kit can drop 10 12 degrees in 30 minutes. Can be used for facial masks, fruits, drinks, beer. Refrigeration effect depends on the size of the cooling space, ambient temperature, heat insulation, seal ability, etc. 3. HIGH EFFICIENCY: This thermoelectric cooler adopted two hollow copper. This thermoelectric cooler does not use refrigerant, can cool heat and eliminate heat in the air easily and quickly, good practicability. Incorporates both the functions of refrigeration and dehumidification, compact and powerful. 4. WORKING VOLTAGE: This thermoelectric cooler adopted DC 12V, low noise, no vibration, convenient to use. In addition to the refrigeration system of this product, you also need to prepare a power supply. If you want to pay close attention to the temperature, you can also prepare a digital display temperature device.