DFRobot Electric Cooler Module (5V 1A) Features a small size of 30 x 30 x 5 mm Max Voltage: 8.4 V Operating Voltage: 5 V Max Current: 2 A Max Temperature Differential: over 65 °C The DFRobot Electric Cooler Module (5V 1A) starts working when powered on with rated voltage 5 V and rated current 1 A. Featuring a small size of 30 x 30 x 5 mm, instantaneous refrigeration, stable performance, no noise, and vibration, it can reduce temperature to -20 °C at most. It can be used in an environment with limited space, high-reliability requirements, and no refrigerant pollution or used for making portable refrigerators/incubators, hot and cold water dispensers, and cooling electronic devices. Note: The side with words is for cooling, and the side without words is for dissipating heat. The heat side requires a heat sink or water-cooled heat dissipation device all the time, otherwise, there is a risk of burnout.