Wiring to control 2 lights independently with a dual light switch

[DIYpowered]

Hello,

I am trying to understand the wiring done for an already working setup in my home by an electrician: a dual light switch (Legrand branded, if it matters) with only 2 wires connected to the switch. It really puzzles me how the switch can control two separate light fixtures, since there should have been 3 wires instead of just 2 connected to the switch? Can someone please explain? Thanks in advance!

 

[MDJ]

lets see a photo

 

[littlespark]

That doesn’t sound right.

Minimum, you need a supply in, plus a switchwire out to each light.

I don’t know how the wiring is done in Mauritius, but in Uk, we have combined cables containing a number of separate cores inside…
So maybe he means 2 cables, not 2 wires?

 

[mainline]

That doesn’t sound right.

Minimum, you need a supply in, plus a switchwire out to each light.

I don’t know how the wiring is done in Mauritius, but in Uk, we have combined cables containing a number of separate cores inside…
So maybe he means 2 cables, not 2 wires?

It could be a slave switch where you would have a L in and a common wire out to a master switch.