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-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 set point is visually adjustable due to its design. Pressure connection: 6.2mm internal thread tube or G1/8 (optional depending on hole). Electrical connection: screw terminals, AMP6.3mm connector, AMP4.8mm connector. Operating temperature: -30°C to 85°C (overpressure up to 5000 Pa). Installation is quick and easy in both vertical and horizontal positions. Features extremely high adjustment accuracy and stable operation. Suitable media: air, non-corrosive gases. Range: 50–500 Pa. Accuracy: Repeatability < ±1% of full scale. Service life: > 1,000,000 switching cycles. Color: Gray. Material: Plastic. Size: 81 x 53 mm. Package includes: 1 x Micro differential pressure switch. Note: Other items not included. Lighting and display settings may cause slight color variations between the image and the actual item. Measurement tolerances may vary by ±1–3 cm.