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-flammable, 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 can be adjusted with visual indication. Pressure connection: 6.2mm internal thread tube or G1/8 Electrical connection: Screw terminals, AMP 6.3mm connector; AMP 4.8mm connector Operating temperature: -30°C to 85°C (with overpressure up to 5000 Pa) Features: - Quick and easy installation in both vertical and horizontal positions - Extremely high adjustment accuracy - Long service life and stable operation Suitable media: Air, non-corrosive gases Range: 20–200 Pa Accuracy: Repeatability less than ±1% of full scale Service life: Greater than 1,000,000 switching cycles Color: Gray Material: Plastic Size: 81 x 53 mm Package Contents: 2 x Micro differential pressure switch Note: - The color of the item may vary slightly due to lighting and display differences. - Measurement may vary by ±1–3 cm due to manual measurement.