This thing is a neat flip-up guard that makes a regular wall light switch look like a missile launch control or a race car starter switch.
One piece is a hinge that mounts to the top screw of the switch plate, and the other is the guard which can be attached to the hinge with some small screws.
Put a lighted switch behind it and it looks awesome.
EDITED: Added an improved bracket that picks up both holes on the switchplate and won't break as easily.
Assemble guard to hinge with two small screws.
I also coated the front in a clear doming epoxy to make it look nicer, but this is not necessary.