landing and hall switch wiring
1 light on the upstairs landing, which is a single switch, but this also works from a double switch down at the bottom of the stairs as well
-1 light at the bottom of the stairs which is a lobby light which works from the double switch at the bottom of the stairs as well.
On the back of the single switch at the top of the stairs I have 3 terminals
L1 L2 L3 and 4 wires, red, yellow, blue and earth. Im fine with where the earth goes?
I didn't find the right solution from the Internet.