A flushmounted box includes a wall switch cover, a transparent conductor plate having a first electric line, and an electroluminescence substance plate is attached on a rear surface of the transparent conductor plate, and a first opaque conductor plate is attached on a rear surface the electroluminescence substance plate and a dielectric plate is attached on a rear surface of the first opaque conductor plate and a second opaque conductor plate is a rear surface of the dielectric plate and a second electric line which is connected the second opaque conductor.