Sheet steel housing, rectangular cross-section, including steel luminaire connectors, homogeneous direct/indirect light distribution for standard-compliant suitability for computer workstations in accordance with DIN-EN 12464-1, glare control through microprism panel with special 'multilayer' technology and optimized light-directing film, electrical connection via 3-pin connection terminal with plug-in contact technology, the ETM levels can be easily adjusted from the top of the luminaire.