Features: Semiconductor coolers are a form of solid state cooling that incorporates both semiconductor technologies and electronic assembly techniques. Application: Fish tank cooling, computer water cooling, circulating water cooling, cooling equipment, etc. Use to Connect the pump and the power supply. Diy kits Thermoelectric Peltier refrigeration cooling system. Fast cooling, outstanding effect. Simple operation, strong practicability. Specifications: Refrigeration piece: Operating voltage: 12v Operating Current: 9 A Operating Power: 108 w A single fan: Operating voltage: 12v Operating Current: 0.2 A Operating Power: 2.4 w Connect way: Connect pump and power supply Application: fish tank cooling, computer water cooling, circulating water cooling, cooling equipment, etc. Size: 160 * 100 * 90 mm/6.30 *3.93 * 3.54inch Weight: about 690 g Note: water cold head color random (blue and silver) Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. Package Included: 1x Thermoelectric Peltier Refrigeration