Correct me if I am wrong, but I believe that what you intended on doing was using the scene controller to switch the lighting load directly, in addition to control other devices via a scene.
If this is the case, and you have a spare micro dimmer, you can still make this work.
Yes, you can wire them both to the same line wire. Wire the load on to the micro dimmer on the Load terminals (marked ‘load’, outside terminals), and supply to the inside terminals. Replace the old switch with the new controller, and program the controller to operate your dimmer. If the controller supports associations, it will work without the controller if associated with the dimmer module.
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