The HONEYWELL 77342-10.0HG-01 is a reliable 5000 Series Vacuum Switch designed for various industrial applications. This SPST-NO switch is factory set at 10.0 in-Hg and features a 1/8-27 NPT port for easy installation. With screw terminals for convenient wiring and individual packaging for added protection, this vacuum switch is a dependable component for maintaining optimal vacuum levels in your system.