This pressure switch is designed for use in ventilation and air conditioning systems to monitor and control airflow in ducts, filters, dampers, and fans. It is suitable for non-flammable and non-aggressive gases. The switch detects small pressure changes and is widely used for controlling aerator 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 visually adjusted due to its clear design. Pressure connection: 6.2mm internal thread tube or G1/8 (optional with hole) Electrical connection: Screw terminals, AMP 6.3mm connector; AMP 4.8mm connector Operating temperature: -30C to 85C (overpressure up to 5000 Pa) Features: - Quick and easy installation, suitable for both vertical and horizontal mounting - Extremely high adjustment accuracy - Long service life with stable operation Suitable for: Non-corrosive gases Range: 50500 Pa Accuracy: Repeatability less than 1% of full scale Service life: Greater than 1,000,000 switching cycles Size: 81 x 53 mm Material: Plastic Color: Grey Package Contents: 2 x Differential pressure switches Note: Light reflection and display settings may cause slight color variation between the product image and actual item. Measurement error allowance is 13 cm.