This pressure switch is used in ventilation and air conditioning systems to control airflow in ducts, as well as in filters, dampers, and fans. It is suitable for air and other non-corrosive, non-aggressive gases. The switch detects small pressure changes and is widely used for aerator flow control, fan monitoring, and air conditioning applications. It is also suitable for overheating protection and frost protection in industrial refrigeration systems. The set point can be visually adjusted due to its design. Pressure connection: 6.2 mm internal thread tube or G1/8 (optional). Electrical connection: screw terminals; AMP 6.3 mm and AMP 4.8 mm connectors. Operating temperature: -30°C to +85°C (overpressure up to 5000 Pa). Installation is quick and easy, both vertically and horizontally. Features high adjustment accuracy and stable operation. Suitable for media: air and non-corrosive gases. Range: 20–200 Pa. Accuracy: repeatability < ±1% of full scale. Service life: > 1,000,000 switching cycles. Color: gray. Material: plastic. Size: 81 × 53 mm. Package contents: 1 × differential pressure switch. Note: Lighting and display settings may cause slight color variation between the image and the actual product. Measurement tolerance: ±1–3 cm.