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 !
www.survivefrance.com
For intermediate switching there aren't any intermediate switches available. The French use the teleinterupteurs.
Here's an explanation.
Help!! trying to complete a job, in London for a French couple. At a late stage, two floors first fixed, the client wants to use a French make of accessories, Arnould (off shoot of Legrand). Basically, they do not make an intermediate switch like ours but uses a system back at the CCU on the...
www.electriciansforums.net
You can use the teleinterupteurs instead of two-way if you want. Then it's easy to add further switches in the future.