Energy saving and efficient operation: When the refrigerator door opens, the door control switch automatically disconnects nonessential circuits such as interior lighting to reduce energy use. Power is restored when the door closes. Over time, this helps lower the refrigerator's energy consumption and may reduce electricity bills. Protection for the refrigeration system: Prevents the compressor and refrigeration components from running continuously when the door is open, avoiding frequent start and stop cycles caused by cold loss. This reduces strain on internal parts and can extend the service life of the refrigeration system. Easy installation and maintenance: Simple, compact structure that is easy to install and maintain. No complex setup is required, which helps keep installation and long term maintenance costs down. Temperature stability inside the box: Cutting off unnecessary circuits and reducing heat entering the refrigerator helps maintain a stable internal temperature, reducing the impact of temperature fluctuations on food preservation. Use scenarios Home kitchen: Everyday use in a family refrigerator where doors are opened frequently throughout the day. Office break room: A shared fridge with multiple users, where energy savings and component protection are beneficial. Small cafe or display fridge: Frequent door access during service; improved temperature stability and longer equipment life support consistent performance.