Chip : TES1-12704 --TEC1-12704 Number of component pairs: 127 Wire specification: lead length 70 +/- 5mm RV standard wire single head 5mm tin-plated Internal resistance: 2.5~3.5 ohm (ambient temperature 23 +/- 1, 1kHZ Ac test) Maximum temperature difference: Tmax(Qc=0) above 65. Working current: =4A (when starting at rated voltage) Rated voltage: DC12V (Vmax: 12V) Cooling : Qcmax 36W Assembly pressure: 85N/cm2 Working environment: temperature range -55~83 (too high ambient temperature will directly affect the cooling efficiency) Encapsulation process: standard 704 silicone rubber seal all around Colour: white Material: semiconductor Size: 30 x 30 x 3.2mm Package Contents: 1 x Thermoelectric Cooler Peltier Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.