The DWYER INSTRUMENTS 1950-10-2F Pressure Switch is designed to measure water column pressure in the range of 3-11". This device is ideal for HVAC applications, providing reliable pressure monitoring. Constructed with high-quality materials, it ensures durability and accuracy. The switch features adjustable settings for customized pressure control, making it versatile for various applications. Its compact design allows for easy installation in tight spaces, while the clear indicators provide easy readability. Compliant with industry standards, this pressure switch is essential for maintaining optimal pressure levels in systems.