The vacuum switch is a mechanical pressure control component specifically designed for vacuum/negative pressure systems. It can automatically connect or disconnect the circuit according to the set degree of vacuum (pressure difference). When the degree of vacuum of the system reaches the preset value, the switch triggers an action to achieve equipment start - stop, protection, or signal feedback. It features sensitive action, stable response, no need for an external power supply, and convenient installation. It is widely used in scenarios such as vacuum equipment, packaging machinery, pneumatic systems, and industrial automation control. It is a key component to ensure the stability of the vacuum process and the safe operation of equipment.