840 Electromechanical Float Switch Operator Assembly, Industrial Low Operating Force, Single Arm Lever, Base-Mounted, Type 1Enclosure, Stainless Steel Float, For Tank or Sump Operation 840 Electromechanical Float Switch Operator Assembly, Industrial Low Operating Force, Single Arm Lever, Base Mounted, Type 1 Enclosure, Stainless Steel Float, For Tank or Sump Operation