This pressure switch is designed for use in ventilation and air conditioning systems to monitor and control airflow in ducts, as well as in filters, dampers, and fans. It is suitable for use with air and other non-corrosive, non-aggressive gases. The switch detects small pressure changes and is widely used for controlling air flow, 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 options include 6.2mm internal thread tube or G1/8 (optional depending on hole configuration). Electrical connections are compatible with screw terminals, AMP6.3mm connector, or AMP4.8mm connector. Operating temperature range: -30°C to 85°C, with a maximum overpressure of 5000 Pa. Installation is quick and easy in both vertical and horizontal orientations. Features extremely high adjustment accuracy and stable operation. Suitable media: air, non-corrosive gases. Pressure range: 50–500 Pa. Accuracy and repeatability: < ±1% of full scale. Service life: > 1,000,000 switching cycles. Color: Gray. Material: Plastic. Dimensions: 81 x 53 mm. Package includes: 1 x Micro differential pressure switch. Other items not included. Note: Lighting and display differences may cause slight variations in color between the image and the actual item. Measurement tolerance: ±1–3 cm.