Low Pressure Switch Normally Open, 3/8" x 24 Thread Binary Pressure Switch, Drier Mount Low Pressure Switch, Drier Mount, Normally Open, Opens 30 psi, Closes 28 psi, 3/8" x 24 Thread Binary Pressure Switch, Normally Open, 3/8" x 24 Thread Red Dot Low Pressure Switch, Drier Mounted, Normally Open, Closes 27 psi, 3/8" x 24 Thread