Item Type: Thermoelectric Cooler Module_x000D_ Model: TEC1-12705_x000D_ Material: Ceramic + semiconductor_x000D_ Purpose: Cooling_x000D_ Wire Specification: Wire Length: Approx. 100mm / 3.9in 5mm, RV standard wire, single head approx. 5mm / 0.2in with tin plated_x000D_ Internal Resistance: 2.4~2.7 (ambient temperature 231, 1kHZ Ac test)_x000D_ Dimension: Approx. 40 x 40 x 3.6mm / 1.6 x 1.6 x 0.1in_x000D_ Maximum Temperature Difference: Tmaximum(Qc=0)>61_x000D_ Working Current: Imaximum=5A (when the rated voltage starts)_x000D_ Rated Voltage: DC12V (Vmaximum: 15.4V)_x000D_ Cooling Power: Qcmaximum 45W_x000D_ Assembly Pressure: 85N/cm2_x000D_ Working Environment: Temperature range -6567 (too high ambient temperature will directly affect the cooling efficiency)_x000D_ Ambient Temperature: -1040_x000D_ How to Use: _x000D_ 1. The working state of the refrigeration sheet is that one side is cooling and the other is heating._x000D_ 2. To the left of the red line, the upper side is the hot side, and the lower side is the cold side.