Features: brand new and high quality Trinuclear Thermoelectric Peltier Refrigeration Air Cooling System, great for small space cooling. No noise and vibration, no refrigerant required. It can for cool water easily and quickly, widely used in water, air conditioning, small fish for tank, etc. Simple operation and strong practicability. Easy to operate and adjust. Equipped with cool fan for better heat dissipation. for Ideal for plate cooling, pet bed cooling, small space cooling etc. Specifications: Material: ABS + Aluminum alloy Power: 180w maximum (3 x osmo chip) Refrigeration power: 126W Maximum current: 15A Stable current: 11A Red line: "+", black line: "-" Item Size: approx. 300x110x75mm / 11.8x4.33x2.95in Package Includes: 1Set x Semiconductor Cooling Unit note: 1. Semiconductor coolers are a form of solid state cooling that incorporates both semiconductor technologies and electronic assembly techniques. 2. When used in a 22 degree environment, the cold end does not open the fan or does not circulate, and the cold end can be frosted after 10-20 minutes of starting. 3. The for DC power is not included, please prepare it by yourself.