Does anyone have a schematic for this unit? Specifically, what I need to know is the WIRED wall-mounted door control switch. It appears that it ISN'T just a closure. Is there data on that wired line back to the motor unit when the switch is pushed? I am attempting to hook up a remote carrier-current dry contact relay so I can remorely in my house raise or lower the door. On my previous Craftsman unit, it was only a matter of connecting the dry contact closure across the two control screws on the motor unit. Doing the same on the Chamberlain unit does NOT do anything. Any thoughts?
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