I have two light bulbs controlled by three light switches. I replaced two of them a while ago (can't remember what the wiring looks like) with no problems. However, I encountered the following issue when attempting to replace the third light switch. The diagram belows shows the old one on left - the new one, to be installed, on the right :
Any advice on how to wire up the new switch ? The red lines show a connection outside of light switch and earth I have not included, it is also outside of switch.
The two lights themselves are both either turned on or off, ie I can can turn both on at one end of hallway and then walk along to other end (or the middle) and turn both off - they work as intended. But I have no idea how to wire up the new switch, is it even the right type of switch ?