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Board, Balboa Duplex Control
Product Code: 59-138-1040  
MFG: Balboa Water Group
MFG #: 51230
Replacement Boards for Duplex Systems Any corresponding Duplex panels may be used with these boards. Temp sensor/ hi limit sold separately. The following topside(s) are compatible with the above circuit board: 58-138-1150, 58-138-1151, 58-138-1152, 58