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 airflow control, fan monitoring, 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 with hole) Electrical connection: screw terminals, AMP6.3mm connector, AMP4.8mm connector Operating temperature: -30°C to 85°C (overpressure up to 5000 Pa) Installation: suitable for both vertical and horizontal mounting High adjustment accuracy and stable operation Suitable media: air, non-corrosive gases Range: 20-200Pa Accuracy: Repeatability < +/- 1% of full scale Service life: > 1,000,000 switching cycles Color: Gray Material: Plastic Size: 81 x 53mm Package Contents: 1 x Micro differential pressure switch Note: Other items not included. Slight color variations may occur due to lighting and display differences. Measurement error allowed: +/- 1-3cm.