Central control of the whole machine: As the 'brain' of the refrigerator, it uniformly manages all loads including the compressor, fans, defrost, and display. Precise compressor control: supports fixed-frequency start/stop and variable-frequency speed regulation, adapting to different cooling demands and improving energy efficiency. Multi-temperature zone independent temperature control: collect refrigerated / frozen / variable temperature room temperatures, adjust independently, precise temperature control Overvoltage / Overcurrent / Short-circuit Protection: Built-in multiple protections to prevent damage to the motherboard and the whole device. Modular interface: standard interface, compatible with mainstream sensors, compressors, and display modules.