Features: Experience monitoring with our Air Differential Pressure Switches, designs to detect subtle changes in air pressure ranging from 20 200Pa, 30 300Pa, to 50 500Pa, ensuring the safe and efficiency of your equipment. Crafted from metal materials, this Small differential pressure Switches offer durability and stability, featuring high protective rating against water and dust for high performances in challenging environment. Ideal for factory maintenance personnel and HVAC technicians, this Switches is addition for those responsible for maintaining and monitoring air pressure in various systems. For use in commercial buildings and industrial production lines, it ensures airflows and equipment operations by accurately track pressure variation. With its low power consumption designs, this air Switches not only extends the lifespans of your systems but also reduces operational costs, making it indispensable component for efficient facility management. Specifications: Component: Metal Type: As Picture Show, Three Type to Choose Size: Diameter 10.3cm/4.06inch Package Includes: 1pc Air Pressure Switches note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you will not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color.