A Peltier cooler, heater, or thermoelectric heat pump is a solid-state active heat pump which transfers heat from one side of the device to the other, with consumption of electrical energy, depending on the direction of the current. ... It can also be used as a temperature controller that either heats or cools.

Specifications:

• Product Item:40x40x3.5mm 8A 15.5V 77W TEC1-12708 Thermoelectric Cooler Peltier Heatsink
• Model: TEC1-12708
• Material: Ceramics
• Size:Approx.40x40x3.5mm
• Ceramic Structure:C:sectional area of the cooling element>1mm²
• Cooling Stage: one
• The number of the thermocouple:127 thermocouples
• Max Voltage:15.5V
• Max Input Current:8A
• Max amount of heat that can be absorbed in the cold face:77W
• Max temperature difference a TEC can achieve:>66℃
• Operating feature: one side refrigeration, the other side fever.
• The red line is positive, the black is negative