"You need to use the MK 1-Gang 2-Way Light Switch with this, i.e. it *must* be a two-way switch, and only the MK product fits exactly with this plate.
Either: You must use a conventional filament bulb. OR You must have a neutral wire available in the switch backbox.
I fitted this during whole-house wiring, so neutral available in the backboxes. In this case, wire this product between the second contact on the light switch, and the neutral wire (you'll need a Wago connector to make the extra wiring joint)."
"I bought this as we were changing our kitchen around and the light switch would no longer be by the door, so this would help locate the switch at night. easy to install does the job perfect, and looks realy good too. have ordered more for others in the house. ScrewFix should have put though that the coloured light is Green."
"WARNING. When you open the item packaging you will find a note saying it is not suitable for use with cfl's (low energy lightbulbs). Have checked with MK and they are not sure about LED's either. So unless you are intending to use ordinary lightbulbs, forget it."