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 commonly 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: 6.2mm internal thread tube or G1/8 (optional if drilled) Electrical connection: Screw terminals, AMP 6.3mm connector, AMP 4.8mm connector Operating temperature: -30°C to 85°C (overpressure up to 5000 Pa) Installation is quick and easy in both vertical and horizontal orientations High adjustment accuracy 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 Micro differential pressure switch Note: Other items shown are not included. Lighting and display settings may cause slight color variations between the image and the actual product. Measurement tolerance: ±1–3 cm.