I have two sets of lights in my bedroom. There are also two light switches. One double light switch is by one door, and turns both sets of lights on or off (one switch does one set, one does the other).
There is also another light switch near the bed - this is a single light switch. It turns on and off one of the sets of lights regardless of how the double switches are set. I gather that this is either a 2-way (UK, where I am) or a 3-way (US) lighting system.
I am going to be replacing the double switch near the door with some relays so that I can control them over the internet. I don't really use the other switch, and I want to do away with it for simplicity's sake. There are pictures of the light switch and a rather crude diagram of what it looks like from the back attached. Which one of those wires is dispensable?
Bonus points if anyone can provide a schematic for this kind of set-up. I'd like to know how it works.