This pressure switch is designed for use in ventilation and air conditioning systems to monitor and control air flow in ducts, as well as in filters, dampers, and fans. It is suitable for use with air and other non-flammable, non-aggressive gases. The switch detects small pressure changes and is widely used for controlling airflow, monitoring fans, and HVAC applications. It can also be used for overheat protection and frost protection in industrial refrigeration systems. The adjustable set point allows for visual calibration. Pressure connection: 6.2mm internal thread tube or G1/8 (optional if the hole) Electrical connection: Screw terminals, AMP6.3mm connector, AMP4.8mm connector Operating temperature: -30°C to 85°C (overpressure up to 5000 Pa) Installation: Quick and easy, suitable for both vertical and horizontal mounting High adjustment accuracy Long service life and stable operation Suitable media: Air, 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 x 53 mm Package Contents: 1 x Differential Pressure Switch Note: The package includes only the items listed above. Other products are not included. Lighting and display differences may cause slight variations in the color of the item shown in the picture compared to the actual product. Measurement may vary by ±1–3 cm due to manual measurement.