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 airflow, 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 if hole is present) Electrical connection: screw terminals, AMP6.3mm connector, AMP4.8mm connector Operating temperature: -30C to 85C (with overpressure up to 5000 Pa) Features: - Quick and easy installation, suitable for both vertical and horizontal mounting - Extremely high adjustment accuracy - Stable operation - Suitable for media: air, non-corrosive gases - Pressure 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 Differential Pressure Switch Note: Other items shown are not included. Lighting and display differences may cause slight color variations between the product image and actual item. Measurement may vary by +/- 1-3cm due to manual measurement.