Sundance 600 Replacement PCB. Replaces all model circuit boards with part #6600-033, 6600-053, and 6600-055 perfectly. Also replaces Spa builders LX-20 Circuit Boards 3-60-0029. If your not sure this is your board, call us with the year and model of your spa to identify.
Sundance SD6600-027 (Controller Version 750) Cameo, Optima, Marin, Capri. Software Rev 4.50 and higher (shown on cpu)
Select 6600-027 from options drop down.