A differential pressure switch is a critical device used to monitor and control the difference in pressure between two points within a system. It activates an electrical switch when a specified pressure difference is reached, providing automatic control and safety features in various applications. Commonly used in HVAC systems, filtration systems, and industrial processes, differential pressure switches help maintain optimal operation by signaling when filters need replacement or when there are pressure imbalances. These switches are known for their reliability, accuracy, and durability, ensuring the efficient and safe performance of equipment and systems.