J-300 Collection Flow Switch w/ Box End Connectors 6560-860  

This was used on hot tubs with the LCD control system only.  This can be identified by the control panel that measures 10 3/4" across.  

These models include: 

2002-2003 J-350, J-360, J-370, J-380  

2004-2006 J-355, J-365, J-375, J-385