1.Lowest Pressure:20PSI 2.Highest Pressure:80PSI 3.Female:Z1/4" 4.Pressure Setting:20-40PSI,30-50PSI,40-60PSI 5.Coverage:USR,CNR.......enclosed,double pole,sigle phase pressure operated switch to be used for the auto-control of water pump. 6.Testing Standards:UL standards 508 of America Canadian Standards C22.2NO.14-95