Two-way switches in France can be wired just like the same in UK.
Here's two examples, but both require two wires between the switches.
Hi all. I want to add a 2nd switch to a single light. The only switch is at the far end of the hall. Can anyone offer any guidance or know where I can find out how to do it ? Thanks !
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For intermediate switching there aren't any intermediate switches available. The French use the teleinterupteurs.
Here's an explanation.
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You can use the teleinterupteurs instead of two-way if you want. Then it's easy to add further switches in the future.