In terms of structural design, the shielding cover adopts integrated molding technology, with tightly adhered edges, and is matched with conductive rubber strips or metal springs to form a seamless electromagnetic sealing structure, effectively preventing electromagnetic leakage. Its surface has undergone special nickel plating treatment, which not only enhances its corrosion resistance, but also further improves its electromagnetic shielding performance. It can work stably for a long time in harsh environments such as high temperature, humidity, and salt spray, with a long service life and low maintenance costs. In addition, the opening and closing design of the shielding cover is convenient, using snap on or screw fastening methods for easy installation and disassembly, facilitating equipment inspection and maintenance, and greatly improving work efficiency.