This pressure switch is used in ventilation and air conditioning systems to control airflow in ducts, as well as in filters, dampers, and fans. It is suitable for air and other non-flammable, non-aggressive gases. The switch detects small pressure changes and is widely used for airflow control, fan monitoring, and air conditioning applications. It is also suitable for overheating protection and frost protection in industrial refrigeration systems. The set point is visually adjustable. Pressure connection: 6.2 mm internal thread tube or G1/8 (optional if the hole). Electrical connection: screw terminals, AMP 6.3 mm connector; AMP 4.8 mm connector. Operating temperature: -30°C to +85°C (overpressure 5000 Pa). Installation is quick and easy, both vertical and horizontal. Extremely high adjustment accuracy. Long life and stable operation. Suitable for media: air, non-corrosive gases. Range: 20–200 Pa. Accuracy: repeatability < ±1% of full scale. Service life: > 1,000,000 switching cycles. Color: gray. Material: plastic. Size: 81 × 53 mm. Package contents: 1 × micro-differential pressure switch.