TEC1-12703 Thermoelectric Cooler Peltier Element Module 1. Number of component pairs: 127 2. Assembly pressure: 85Ncm2 3. Be sure to apply thermal grease when installing the radiator 4. The literal is cold side, and the non-literal is hot side 5. Packaging process: standard 704 silicone rubber seal around 6. Packaging standard: foam box packaging, storage conditions ambient temperature -10 ~ 40 degrees Celsius 7. Working environment: temperature range -55～83 degrees Celsius (excessive ambient temperature will directly affect the cooling efficiency) 8. The working state of the cooling plate is that one side is cooling and the other side is heating, and the heating surface must be well dissipated during work. It is strictly forbidden to energize for more than 2 seconds without heat dissipation, so as to avoid overheating and burning. 9. Dimensions: 12703: 40x40x4.0mm, 12709: 40x40x3.4mm, 12710: 40x40x3.4mm, 12715: 40x40x3 .3mm 10. Other parameters: - 12703: Wire specification: lead length 310+-5mm, RV standard wire, single head 5mm tin-plated, internal resistance: 4.0~4.3 ohms (ambient temperature 23+-1 degrees Celsius, 1kHZ Ac test), working current: Imax=12 ( When starting at rated voltage), rated voltage: DC12V (Vmax: 15.5V), cooling power: Qcmax 27W - 12709: Current: less than or equal to 9A, temperature difference: less than or equal to 68 degrees Celsius, voltage: less than or equal to 15.2V, hot end temperature: 82W - 12710: Wire specification: lead length 300+-5mm, RV standard wire, single head 5mm tin plated, internal resistance: 1.2~1.5 ohms (ambient temperature 23+-1 degrees Celsius, 1kHZ Ac test), working current: Imax=10A ( 15Vmax voltage start), rated voltage: DC12V (Vmax: 15.5V), cooling power: Qcmax 92W - 12715: Voltage: less than or equal to 15.4V, current: less than or equal to 15A, cold output: 134W