Overview Reviews Similar Products Product Description Balboa serial standard circuit board for Leisure Bay Spas8 Pin Phone style connector.Chip Number: LB501SR1A or LB501SZR1Also replaces LB500S Product Videos Custom Field Product Reviews Find Similar Products by Category Recommended Quick view Leisure Bay Circuit Board LB102RR1B $445.95 Quick view Leisure Bay Circuit Board LB104R1E $505.00 $397.95 Quick view Leisure Bay Circuit Board LB102R1D $500.00 $429.95