Overview Reviews Similar Products Product Description Cal Spas Circuit Board 52935 Chip Number 15001R1A / 1500-1R1A Made By Balboa For Cal Spas Cal Spas Balboa 1500-1 Spa Pack 52934 Product Videos Custom Field Product Reviews Find Similar Products by Category Recommended Quick view Cal Spas Circuit Board OG3000R1A 30 Day Warranty $309.95 Add to Cart Quick view Cal Spas Circuit Board, C2001R1B 30 Day Warranty $450.00 $369.95 Add to Cart Quick view Cal Spas Circuit Board, 2200R1D 30 Day Warranty $379.95