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 air and other non-flammable, non-corrosive gases. The switch detects small pressure changes and is commonly used for airflow control, fan monitoring, and HVAC system regulation. It can also support overheating and frost protection functions in industrial refrigeration systems. The set point is visually adjustable. Pressure connection: 6.2 mm internal thread tube or G1/8 (optional, depending on mounting hole). Electrical connection: screw terminals; compatible with AMP 6.3 mm and AMP 4.8 mm connectors. Operating temperature range: –30°C to +85°C (maximum overpressure: 5000 Pa). Installation is quick and flexible—suitable for both vertical and horizontal mounting. Features high adjustment accuracy and long service life with stable operation. Compatible media: air and non-corrosive gases. Pressure range: 20–200 Pa. Accuracy: repeatability < ±1% of full scale. Service life: > 1,000,000 switching cycles. Color: gray. Material: plastic. Dimensions: 81 × 53 mm. Package includes: 1 × differential pressure switch. Other items shown are not included. Note: Color appearance may vary slightly due to lighting and screen settings. Dimensional tolerance: ±1–3 cm.