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Smart Home Forum by FIBARO Team

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Dimmer in 2-way double switches





I have two separate lights which are wired into double toggle switches and the whole thing is two-way (two separate places where I can switch each light on/off). I think I got the terminology correct, but apologies if not.


I would like to be able to dim both of these lights. I can probably physically fit one dimmer in each of the boxes behind the switches, but not two in one. I think this should be ok, essentially one dimmer per circuit.


Then I would like to swap the toggle switches to momentary ones. Will it be ok that I have a momentary switches in the light switch box 2 even if the dimmer is placed only in switch box 1?

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Good plan to use momentary switches. They are fine to be located away from the Dimmer2. You can have multiple momentary switches - just wire them in parallel. 

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Theres a catch in that both Dimmers need direct  access to the wire that leads to the light(s). They also both need a permanent live connection. So i cant think of a way how to achieve it because you probably wont have that behind both switches. One box will have access to live the other to the light, and 4 wires in between the boxes. All 4 wires are already needed to parallel the switches (S1/Sx), so you cannot carry through a permanent live as well.


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  • Yeah, I had no idea how this works. I've opened up one box, and found just the wires leadings to the other box, which I can't really use for anything as far as I understand. On the other hand, the primary box has some many cables in it, it is impossible to fit anything extra. I think the only way to do this is to just get smart light bulbs and control it there.

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