For Sundance Spas Models】 09/2020+ 680 Series / 03/2020+ 780 Series, 04/2017+ 780 Dover / 10/2016+ 980 Series: Kingston, Claremont / 2016+ 880 Series: Maxxus, Aspen, Optima, Cameo, Altamar, Marin, Capri / 2013-03/2017 780 Montclair / 2011+ Select Series: Constance, Victoria / 2008-03/2017 780 Series: Camden, Certa, Chelsee, Hamilton, Hamilton (circ pump) / Hartford (circ pump), Burlington (circ pump) / 2007-2012 680 Hartford, Hawthorne Models equipped with a Circ Pump / 2007 Hamilton, Chelsee, Certa, and Camden / 2005-2006, 780 Palermo, Bahia, and Cayman. Please see more compatible model in the product details page.

【For Jacuzzi & Sweetwater Models】 For Jacuzzi 2015+ J-500 Series / 09/2015+ J-400 Series / 2016+ J-300 Convertible / 02/2020+ J-300 Models / 10/2020+ J-200/J-100 / 2002-2003 J-320, J-330, and J-340 / 2004+ J-335,J-345 / 2007+ J-355,J-365, J-375 / 2007+ J-230, J-270, and J-280 with Circulation Pump Option / 2002-2015 J-300 LED Series (With Curled Finger Connectors) / 2011+ JLX, JLXL； For Sweetwater 2003-2004 Sweetwater Models: Palermo Bahia, Cayman All 2003-2004 Sweetwater Models

【Technical Description】 Replace Part Numbers: 2560-040, Q12DS-C2. 2560-040 Flow Switch comes molded with a 3/32 inch hole opening. Prior to February 2008 a 3/32" hole had to be drilled for it to be installed on all 2002-2008 2 and 3 pump models.