"Thep - thep" is a connector and disconnects an electrical current to a place, be it a lamp or other electronics.
By pressing "thep - thep" to the right then the power will flow to the lamp and make the lights on, if you want the lights off press "thep-thep" to the left with automatic electric current will be disconnected.
To keep "thep theft "out of the reach of childrens. -**