A year ago, we bought a house, and, with the house, we were handed a small, three-button clicker. Something like this (but with no labels on the buttons) 
The first button turns on/off a series of lights in the kitchen. The second button turns on/off several lights in the garden. And the third button causes a click sound in the ceiling above the dining area. So, I gathered it's a yet-unused button.
When I inspected the hole with the clicking sound, I saw there was this device. 
I was wondering where should I look to hook up a new lightbulb or a new standing lamp, etc. (or if there are any suitable light fixtures for it. I have no idea where to look for.)
