Designed to replace part number 2560-040 and Q12DS-C2, this flow switch is fully compatible with Sweetwater, and compatible with hot tubs. 09/2020+ 680 Series / 03/2020+ 780 Series, 04/2017+ 780 / 10/2016+ 980 Series: Claremont / 2016+ 880 Series: Cameo / 2013-03/2017 780 Montclair / 2011+ Series: Constance, Victoria / 2008-03/2017 780 Series: Camden, Chelsee / 2007-2012 680 Hawthorne Models / 2007 Chelsee, and Camden / 2005-2006, 780 Bahia Compatible with & Sweetwater Models: 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; Compatible with Sweetwater 2003-2004 Sweetwater Models: Bahia, All 2003-2004 Sweetwater Models 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 inch hole had to be drilled for it to be installed on all 2002-2008 2 and 3 pump models. High impact plastic housing, brass wire with insulating rubber cable. Fast response, small hysteresis, high precision, heat resistance, waterproof, wear resistance. 0.85 inch hose connections and 0.4 inch freeze line connection. Clear plastic for viewing of any debris in switch. Directional labels affixed for install. Displays error messages FLO2 and a flashing message. Save your charge. Warm Tips Cable has Curled Finger Connectors. Do not use on other models such as 800, 850, 800 Series that use a square finger connection. Material: plastic Package Contents: 1 x 2560-040 Flow Switch