TEC1-12706 Thermoelectric Cooling Module Overview: The TEC1-12706 Thermoelectric Cooling Module offers efficient temperature control for diverse applications with its compact 40 40 3.75mm design. Key Features: Internal Resistance: 2.1 ~ 2.4 ohms at 23 ± 1°C, 1kHz AC Max Temperature Difference: Over 59°C when Qc = 0 Rated Voltage: 12V (Max 15V, start current 5.8A) Working Current: 4.3-4.6A Cooling Power: 55W (Qcmax) Temperature Range: -55°C to 83°C Polarity Reversal: Switch between cooling and heating by reversing polarity Construction: High-quality semiconductor material between ceramic plates Applications: Ideal for CPU coolers, alternate power sources, and custom car.