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Diymore 5pcs TEC1-12705 12V 50W 40MMX40MM Heatsink Thermoelectric Cooler Cooling Peltier Plate Module Specification: Chip Type: TEC1-12705 Refrigeration power: Qcmax 50-60W Dimensions: 40 * 40 * 3.8mm element number 127 on Maximum temperature: Tmax (Qc = 0) over 67 Working current: Imax = 4.3-4.6A (rated at 12V) Rated voltage: 12V (Vmax: 15V starting current 5.8A) Internal resistance: 2.5 ~ 2.8Ω (ambient temperature of 23 ± 1 , 1kHZ Ac test) Working environment: temperature range -55°C ~ 83°C (high ambient temperatures drop directly affect the cooling efficiency) Package Included: 5X Diymore TEC1-12705 40MMX40MM Heatsink Thermoelectric Cooler Cooling Peltier Plate Module