1THe semiconductor cooling machine will not cause any noise and vibration with no need for refrigerant. 2The product can work stably, making it easy to operate and convenient to adjust. 3This thermoelectric cooler adopts semiconductors, which has a good cooling effect. 4The heat sink has a large area, which can contact more air and quickly dissipate heat. 5With professional design and reasonable structure, the air cooling device is easy to replace and install. Item Type: Semiconductor Cooling Machine Material: Aluminum + Plastic Power: Maximum power 180W (3 12705 chips) Cooling Power: 126W Rated Voltage: 12VDC Maximum Current: 18A Stable Current: 16A Red Line: "+" Black Line: "-" Product Size: Approx. 300x110x90mm / 11.8x4.3x3.5in Use Purpose: Cooling in a small space, learning the principle of semiconductor refrigeration, and the company developing cooling equipment for research and planning. 1 xSemiconductorCoolingMachine