Usage Tips: Compatible with Sundance Spas 09/2020+ 680 Series, 03/2020+ 780 Series, 04/2017+ 780 Dover, 10/2016+ 980 Claremont/Kingston, 2016+ 880 Series, 09/2020+ 680 Alicia, 09/2020-12/2020 680 Prado5 and Tacoma, 03/2020-03/2021 780 Hanover, 2019-03/2021 980 Lisbon/Odessa, 03/2018-03/2021 880 Cambria, 2011-2018 Select Series, 2013-03/2017 780 Montclair, 2008-03/2017 780 Series, 2008+ 780 Series, 2008-2012 680 Burlington models equipped with a circulation pump. Compatible with Sweetwater 2003-2004 models and Jacuzzi 2015+ J-500 Series, 09/2015+ J-400 Series, 2016+ J-300 Convertible Models, 02/2020+ J-300 Models, 10/2020+ J-200/J-100 Models, 2002-2003 J-320, J-330, J-340 Models, 2004+ J-335, J-345, 2007+ J-355, J-365, J-375 Models, 2007+ J-230, J-270, J-280 Models with circulation pump option, 2002-2015 J-300 LED Series (with curled finger connectors), 2011+ JLX, JLXL models. Spa Flow Switch Replacement Kit: This complete flow switch replacement kit features a high-impact surgical plastic housing and clear plastic for easy viewing of debris. A defective flow sensor may cause a "Flashing Flo" or "Solid Flo" error on the control panel. Replace the old flow switch if a "Solid Flo" error appears to prevent issues with the circulation pump or spa filter. Plug & Play: Installation takes only a few minutes. Remove the old flow switch and install the new one, ensuring correct flow direction. Color: Blue + Black. Material: Plastic. Package Contents: 1 x Flow Switch Part Kit. Only the listed item is included; other products are not included. Note: Light reflection and different displays may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3 cm.