Discreet plastic safety luminaire for fitting in the ceiling, which integrates inconspicuously into the ceiling. The in-ceiling housing is easy to mount; it is fastened at three points using a screw. Strain relief to hold the connection cables is already integrated.  The luminaire is connected to the mains in the in-ceiling housing. When closed, the luminaire is powered via contact plugs. This greatly simplifies mounting and makes convenient connection possible despite the small size of the luminaire.