Overview Reviews Similar Products Product Description This circuit board replaces Sundance 600 boards and includes a calibrated temp sensor. 50179 Location: BLR3B1 Product Videos Custom Field Product Reviews Find Similar Products by Category Recommended Quick view Sundance Spas 600/650 Circuit Board. Replaces 6600-043 & 6600-055 (1 pump) $899.25 $0.00 Quick view Sundance Spas 600/650 Circuit Board. 6600-053 $792.25 $499.95 Quick view Sundance 400-600 series circuit board - 6600-032 $771.63 $462.95