1、Semiconductor refrigeration is a kind of refrigeration technology which produces negative thermal resistance, which is characterized by non-moving parts and high reliability. 2、Suitable for small space cooling, semiconductor refrigeration learning theory, research solutions developed cooling equipment planing. 3、The cooling effect depends on the size of the cooling space, ambient temperature, adiabatic, sealing etc. 4、Can be used as dual-core cooling, air cooling device, cooling equipment. 5、Stable work and low noise, no refrigerant required. Features: Semiconductor refrigeration is a kind of refrigeration technology which produces negative thermal resistance, which is characterized by non-moving parts and high reliability. Suitable for small space cooling, semiconductor refrigeration learning theory, research solutions developed cooling equipment planing. The cooling effect depends on the size of the cooling space, ambient temperature, adiabatic, sealing etc. Can be used as dual-core cooling, air cooling device, cooling equipment. Stable work and low noise, no refrigerant required. Specification: Material: aluminum + plastic fan Plug: EU plug Cooling core: 2* TEC1-12705 Length: 20cm / 7.87in Weight: Approx.1622g/57.2oz Wiring method: V+: All red wire (any V+ is ok) V-: All black wire(any V- is ok) L N: Power cable Package list: 1 x Dual-core Semiconductor Refrigeration 1 x Power supply 1 x EU plug cable Note: Please kindly make a note if you need any adapter.