Balboa Water Group 51230 Duplex Knob-Type Circuit Board

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The Balboa Water Group 51230 Duplex Knob-Type Circuit Board was designed for use in spa systems, offering reliable analog control functionality. It featured a phone plug with a 6-c onductor connection, ensuring consistent communication between spa components. Engineered with durability in mind, this circuit board supported long-lasting performance under regular spa operating conditions. Its compact and practical design made it easy to integrate into existing systems where knob-type duplex control was required. Although this model is now obsolete, it represents Balboa’s reputation for dependable and innovative spa electronics. Show more