Specifications:Model: TEC1-12704Voltage: 12V Umax (V): 15.5V Max Current (A): 4A Cooling Power: Qcmax 36WResistance: 3.0-3.3ohm Tmax(Qc=0): up to 63°C Operates Temperature: -55°C to 83°C Power Cord: 15cm Dimensions : 40mm x 40mm x 4.0mm (L*W*T)Package Content: 1 x Thermoelectric Cooler