The CG+/Sensor-A-SAV-CP is meant to be connected to a Millennium blower that was manufactured prior to 2005.
When choosing between topsides CG+/SENSOR-A-SAV-CP and CG+/SENSOR-A-CP keep in mind they are interchangeable as long as the cords are the same, either RJ-45 or TMS (2 or 4 pins).