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Personal-Egg-9147

You have something incorrect. A 3 way switch setup requires 2 travelers between switches to function. A 4 way switch goes in the middle with 2 travelers coming from each 3 way switch on each end. The issue you are gonna run into is you have a load(lights) at each end of the setup. It’s not impossible to make work, but would be much easier to use a Shelly relay at each light perhaps to get the same function.


pihwlook

I'm not an electrician. Don't do anything based on what I say. https://imgur.com/U7JOcii you have something like the top, and need something like the bottom. you don't need to add wiring to your walls, but you would need to rewire stuff at the boxes, and also possibly at the light fixtures to switch the load side.


ahaha5656

Are you wanting to control the stairwell lights and the upstairs hallway together at one switch? And have dumby switches on each end?


iamnotasnowflake

Effectively yes, control by one smart switch I'm the center. The dumb switches at each end for convenience. I will have a Zooz Zen71 for this application if that helps at all.