Marca Ravens? Mod. K-CB/"X"-PWP-C-R2T3-CATHAY R Cassetta di controllo letto ospedaliero-Parti

I tested the motors (of the bed I took apart) manually and they all worked. The red light in the center blinks like it should but I couldn't get it to communicate with my remote. I know where the green wire goes but not the black one.

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