Chip model: 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 power: Qcmax 36W Assembly pressure: 85N/cm² Working environment: temperature range -55~83 (high ambient temperature may affect cooling efficiency) Encapsulation process: standard 704 silicone rubber seal all around Color: 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 cause the color of the item in the picture to be slightly different from the real thing. The measurement allowed error is +/- 1-3cm.