Pressure sensor switch is designed to make or break an electrical contact at a specific preset pressure level. It serves as a simple control device, not typically used for precise measurements but for maintaining pressure within a desired range, activating alarms, or turning on/off pumps or other equipment when a set pressure threshold is reached.

Function: 

Acts as a safety or control device, triggering actions based on preset pressure thresholds.

Applications: 

Widely used in compressors, boilers, water pumps, and HVAC systems to control and safeguard machinery by ensuring that pressures do not exceed safe limits.