The WS4 waterproof micro switch of Dongnan Electronics adopts a secondary injection molding process, which solves the problem of automatic production speed and shell direction. The parallel terminal design is more suitable for automatic welding. The WS4 waterproof micro switch is equipped with welding terminals, PCB terminals, and wire terminals, and stable sealing is achieved through rubber sealing rings and epoxy resin filling. The WS4 waterproof micro switch can be used in areas with water or dust. On the basis of reliability and stability, we provide external components, making the application range of switches wider and installation more convenient.