This pressure switch is used 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-aggressive gases. The switch detects small pressure changes and is commonly used for airflow control, fan monitoring, and HVAC system operation. It supports applications such as overheating protection and frost protection in industrial refrigeration systems. The set point is visually adjustable due to its design. Pressure connection: 6.2 mm internal thread tube or G1/8 (optional). Electrical connection: Screw terminals with AMP 6.3 mm and AMP 4.8 mm connectors. Operating temperature range: -30°C to +85°C (maximum overpressure: 5000 Pa). Installation is quick and easy in both vertical and horizontal orientations. Features high adjustment accuracy and stable operation. Compatible media: Air and non-aggressive gases. Pressure range: 20–200 Pa. Accuracy: Repeatability ±106 switching cycles. Color: Gray. Material: Plastic. Dimensions: 81 × 53 mm. Package contents: 1 × differential pressure switch. Note: Color appearance may vary slightly due to lighting and screen settings. Measurement tolerance: ±1–3 cm.