These will only fit into S100102 to upgrade but the Lay-Z-Spa S100102 square pump model can be made to wifi known as S100202 These are from the latest hot tub pump model S100202 all functions work as they should THEY ARE EITHER A REPLACEMENT FOR YOUR NON WORKING ONES. OR YOU NEED BOTH OF THEM TO UPGRADE TO WIFI.. one is the pcb board electrics with the 2 big copper coils on.. one is the led flip up face control panel, with the WIFI symbol 1st class post to uk mainland in with buy it now A parts are tried and tested.
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