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-conductor 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.
