Core intelligent control center of the refrigerator, coordinating all electrical and refrigeration functions of the entire appliance. Receives temperature sensor signals in real time, precisely regulating the refrigeration. Drives the circulation fan to operate, distributing cold air evenly and reducing temperature fluctuations. Automatically manages defrost cycles, preventing the evaporator from frosting, ensuring frost-free cooling. Uses flame-retardant PCB materials, high-temperature resistant and anti-aging, suitable for the humid and temperature-variable environment of the refrigerator.