This pressure switch is designed for use in ventilation and air conditioning systems to monitor and control airflow in ducts, filters, dampers, and fans. It is suitable for air and other non-corrosive, non-aggressive gases. The switch detects small pressure changes and is commonly used for airflow control, fan monitoring, and HVAC system regulation. It can also support overheating protection and frost protection in industrial refrigeration systems. The set point is visually adjustable due to its precise design. Pressure connection: 6.2 mm internal thread tube or G1/8 (optional with pre-drilled hole) Electrical connection: Screw terminals; AMP 6.3 mm and AMP 4.8 mm connectors Operating temperature range: –30°C to +85°C (maximum overpressure: 5000 Pa) Mounting: Quick and easy installation in both vertical and horizontal orientations High adjustment accuracy and stable operation Compatible media: Air and non-corrosive gases Pressure range: 20–200 Pa Accuracy: Repeatability < ±1% of full scale Service life: > 1,000,000 switching cycles Color: Gray Material: Plastic Dimensions: 81 × 53 mm Package includes: 1 × differential pressure switch Note: Color appearance may vary slightly due to lighting and screen settings. Measurement tolerance: ±1–3 cm.