K9AY and Bi-dir beverage controller

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!!K9AY or 4-way Bi-DIR switching matrix * Select between switching matrix. * K9AY and 4-way Bi-dir system do have different switching matrix table. * [bigger picture|https://remoteqth.com/img/ZAW-WIKI/k9-bidir-controller/FP_1.png] [https://remoteqth.com/img/ZAW-WIKI/k9-bidir-controller/FP_1-850.png|noborder]
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