Sheet steel housing suitable for ceilings with visible T-rails, concealed symmetrical rail constructions and cut-out ceilings, direct light distribution using a micro-prism panel made of PMMA, a soft light is transmitted to the outside with frosted diffusers, light color warm white (927) to daylight white (965) with very good color consistency and high color rendering Ra>90, for computer workstations, 65° < 3000 cd/m² all-round glare protection in accordance with the current standard DIN-EN 12464-1, DALI LED driver Device Type 8 (DT8) integrated. Electrical connection via 5-pin connection terminal with plug-in contact technology.