It integrates temperature sampling, damper/fan/lighting/defrost control functions, and supports multiple sensors and peripheral expansions. It has a multi-mode automatic/manual switching function, suitable for daily use, holidays, and large-scale storage scenarios. It supports functions such as refrigeration, cooling, freezing, energy saving, and defrosting, and can automatically adjust according to the load and operating conditions. It enhances the low-frequency startup and running torque of the compressor to ensure smooth startup under low-temperature conditions.