Water sensor kit 50027998-002 for all TrueSteam models. Replaces part number 50027998-001. Includes the sensor, wire harness, 2 gaskets, retaining clip and screw. As shown in photo. This sensor has five ¼" terminals that connect with the harness's modular connector. The terminals are non-magnetic stainless steel bars that protrude out the bottom of the assembly at different levels. This is a simple device with no internal electronics. Continuity should exist between the terminal connection and where the stainless steel protrudes from the bottom. Continuity should not exist between the different terminals (when dry). See the installation manual, page 21 for trouble shooting.