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• Features: Semiconductor refrigeration is a type of refrigeration know-how which produces negative thermal resistance, which is characterized by way of approach of non-moving components and high reliability. Suitable for small discipline cooling, semiconductor refrigeration studying theory, study suggestions advanced cooling equipment planing. The cooling effect will depend 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 occasional noise, no refrigerant required. Specification: Material: aluminum + plastic fan Voltage: 220V Cooling core: 2* TEC1-12706 Length: 20cm / 7 Weight: Approx/57 Wiring method: V+: All pink wire (any V+ is ok) V-: All black wire(any V- is ok) L N: Power cable

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