Adjustable pressure range 20 to 500 Pa for precise control of air in ventilation and air conditioning systems. Applications: Suitable for ventilation systems, air conditioning units, filters, ailerons, and fans. This pressure switch effectively controls and monitors the air to ensure performance of fans and air conditioning systems. Compatible with nonflammable gases: Designed to work with air and other nonflammable gases, providing safety and reliability across different environments and delivering accurate, stable performance in air applications. Protection against overheating and frost: In addition to regulating air, this pressure switch offers protection against overheating and frost in industrial refrigeration systems, guaranteeing safe and efficient operation and extending the lifespan of cooling systems. Use scenarios: Controlling intake and exhaust fans in commercial buildings to maintain desired indoor air quality and pressure balance. Regulating air flow in air conditioning units and through filters to ensure efficient cooling and system performance. Providing protection for industrial refrigeration systems by preventing frost formation and overheating through reliable pressure monitoring and control.