Balboa Circuit Board, Super Duplex Digital (54091)

Balboa Circuit Board, Super Duplex Digital (54091) is a replacement control board purpose-built for Balboa M-1 spa systems. This unit, discontinued by the manufacturer, provides a compact, digitally controlled platform that integrates with the Duplex Digital architecture used across Balboa spa controls. The board requires a 115V power supply and is compatible with any Duplex Digital module within M-1 configurations.

Key details and compatibility include:

• Part number: 54091; replaces multiple Balboa equivalents including 33-54091-K, 50973, 51674, 51686, 51692, 51766, 51786, 51793R, 51859, 52299, 53183, 611154, 9710-15
• Chip: M1R1B(x) family
• Found on Balboa M-1 systems; designed for standard Balboa spa control wiring and connectors

Ideal for service technicians and owners replacing a failed M-1 board, this unit supports maintenance for older installations, delivering reliable digital control within a compact board footprint. Balboa Water Group’s durable design and proven compatibility help ensure continued operation of spa features managed by the M-1 platform.

Discontinued by manufacturer

Circuit Board, Balboa, M1R1, Super Duplex Digital, 8 Pin Phone Cable