This pressure switch is designed to activate when the pressure in an HVAC system reaches a specific threshold, allowing for efficient and reliable operation. With a single pole normally open configuration and close on fall functionality, this switch is ideal for use in a variety of heating and cooling applications. Its compact size and durable construction make it easy to install and maintain, while its precise calibration ensures accurate performance over time. Whether you're a seasoned HVAC service technician or just starting out in the field, this pressure switch is an essential component for any successful installation or repair job.