This Johnson Controls pressure switch is designed to monitor and control the pressure of a system. With a capacity of 20" of water column (20"), it is suitable for applications that require precise pressure regulation. The SPST (Single Pole Single Throw) configuration ensures a simple on/off operation. The switch is designed to open at high pressure, providing protection against overpressure situations. It features a 50-pound pressure range, making it suitable for various industrial and commercial applications. The switch is equipped with an open-high design, which means it will activate when the pressure exceeds the set limit. Overall, this Johnson Controls pressure switch offers reliable and accurate pressure monitoring for systems requiring precise control.