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, HVAC applications, overheating protection, and frost protection in industrial refrigeration systems. It features a visually adjustable set point. 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, compatible with both vertical and horizontal orientations Adjustment accuracy: Extremely high Operation: Stable and reliable Medium compatibility: 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 contents: 1 × differential pressure switch Note: Actual product color may vary slightly due to lighting conditions and screen settings. Dimensional tolerance: ±1–3 cm.