This pressure switch is primarily used 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-corrosive, non-aggressive gases. Designed for high sensitivity, it detects small pressure changes and is widely used for airflow control, fan monitoring, and HVAC system regulation. It also supports overheating protection and frost protection in industrial refrigeration systems. The switch features a visually adjustable set point. Pressure connection: 6.2 mm internal thread tube or G1/8 (optional with pre-drilled hole). Electrical connection: Screw terminals; 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. High adjustment accuracy and 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: Screen settings and lighting conditions may cause slight color variation between the image and the actual product. Measurement tolerance: ±1–3 cm.