Explore our Circuit Boards collection, featuring dependable, high-performance replacements and upgrades for spa, pool, and control systems. Built for reliability and long life, these boards deliver precise compatibility, simple installation, and minimal downtime for technicians and DIY experts alike.
From busy service teams to do-it-yourself enthusiasts, these Circuit Boards are chosen for compatibility, durability, and straightforward installation. Each option is backed by quality control and clear documentation to get systems back online quickly.
Designed for technicians, property managers, and DIY enthusiasts, these boards meet standard mounting patterns, connector layouts, and safety ratings to fit a wide range of control systems. They support quick diagnostics, reliable power management, and future-ready upgrades. Clear specifications and accessible support help you choose the right option with confidence.
![Balboa Circuit Board, KEYS 100C PCB, VS501Z [54357] Spa Parts: Spa Circuit Boards (Balboa) 54357.1](http://bathparts.com/cdn/shop/products/54357.1.jpg?v=1769976163&width=700)
![Balboa Great Lakes GPM Circuit Board [54362-02] (53553-01) (G1152) Spa Parts: Spa Circuit Boards (Balboa) G1152-01_CIRCUIT_BOARD](http://bathparts.com/cdn/shop/files/G1152-01_CIRCUIT_BOARD.jpg?v=1769976112&width=1600)
![Balboa Circuit Board [55507] (VS300FHX) (54604-01) Spa Parts: Spa Circuit Boards (Balboa) 54604-01_81d64d37-bc02-4a8e-b047-3fc81005b676](http://bathparts.com/cdn/shop/products/54604-01_81d64d37-bc02-4a8e-b047-3fc81005b676.jpg?v=1769976124&width=1600)
![Watkins Advent Circuit Board [77656] Spa Parts: Spa Circuit Boards (Watkins) Watkins_Advent_Circuit_Board_77656](http://bathparts.com/cdn/shop/files/Watkins_Advent_Circuit_Board_77656.webp?v=1769976152&width=1000)
![Logic Jumper For all Sundance systems except (CRL) [6560-864] Sundance Spa Parts 20618](http://bathparts.com/cdn/shop/files/20618.webp?v=1769976170&width=2000)
![Logic Jumper For all Sundance systems except (CRL) [6560-864] Sundance Spa Parts 6560-864](http://bathparts.com/cdn/shop/files/6560-864.webp?v=1769976170&width=2000)
![Balboa Great Lakes GPM Circuit Board [54362-02] (53553-01) (G1152) Spa Parts: Spa Circuit Boards (Balboa) 54357.2](http://bathparts.com/cdn/shop/products/54357.2.jpg?v=1769976170&width=700)
![Balboa Circuit Board, EL2000 M3 [54482-03] Spa Parts G1223](http://bathparts.com/cdn/shop/files/G1223.jpg?v=1769976125&width=1600)
![Balboa Circuit Board, EL2000 M3 [54482-03] Spa Parts api-v1.1-file-public_files-pim-assets-eb-c0-dd-61-61ddc0ebdd14481e49915197-images-38-23-1e-62-621e2338636479bb810c8192-old_54482_spa-control-parts-circuit-board-balboa-el2000-el2001-8](http://bathparts.com/cdn/shop/products/api-v1.1-file-public_files-pim-assets-eb-c0-dd-61-61ddc0ebdd14481e49915197-images-38-23-1e-62-621e2338636479bb810c8192-old_54482_spa-control-parts-circuit-board-balboa-el2000-el2001-8.jpg?v=1769976125&width=2000)
![Balboa Circuit Board, Cal Spa 6300DV Series [ELE09100236] Spa Parts Cal_Spa_6300DV_Series_Circuit_Board_ELE09100236](http://bathparts.com/cdn/shop/products/Cal_Spa_6300DV_Series_Circuit_Board_ELE09100236.jpg?v=1769976169&width=700)
![Balboa Circuit Board, Keys 211D, VS510SZ (53753R1A) [54372-01] Spa Parts: Spa Circuit Boards (Balboa) 54378](http://bathparts.com/cdn/shop/products/54378.jpg?v=1769976124&width=700)
![Balboa Circuit Board VS500 (54369) [Keys 100D] Spa Parts: Spa Circuit Boards (Balboa) 54357_instructions_36974c9c-e1c4-488c-bb6a-1e41ae33fce9](http://bathparts.com/cdn/shop/products/54357_instructions_36974c9c-e1c4-488c-bb6a-1e41ae33fce9.jpg?v=1769976124&width=1600)
![Balboa Circuit Board VS500 (54369) [Keys 100D] Spa Parts: Spa Circuit Boards (Balboa) 54357](http://bathparts.com/cdn/shop/products/54357.jpg?v=1769976125&width=1000)
![Balboa Circuit Board [55888] (VS300FHX) Spa Parts: Spa Circuit Boards (Balboa) G1152-01_backside](http://bathparts.com/cdn/shop/files/G1152-01_backside.jpg?v=1769976153&width=1600)
![Balboa Circuit Board [Cal Spa C1000R1B] [ELE09100000] Spa Parts: Spa Circuit Boards (Cal Spa) Cal_Spa_C1000R1B_Circuit_Board_ELE09100000](http://bathparts.com/cdn/shop/files/Cal_Spa_C1000R1B_Circuit_Board_ELE09100000.webp?v=1769976152&width=1000)
![Balboa Circuit Board [Cal Spa, CS501Z] (ELE09100027) Spa Parts: Spa Circuit Boards (Cal Spa) Cal_Spa_Circuit_Board_ELE09100027](http://bathparts.com/cdn/shop/files/Cal_Spa_Circuit_Board_ELE09100027.webp?v=1769976152&width=1000)
![Balboa Circuit Board [Cal Spa, 6200R1A] (ELE09100237) Spa Parts: Spa Circuit Boards (Cal Spa) Cal_Spa_6200R1A_Circuit_Board_ELE09100237](http://bathparts.com/cdn/shop/files/Cal_Spa_6200R1A_Circuit_Board_ELE09100237.webp?v=1769976152&width=1200)