Slim LED surface-mounted luminaire with prismatic light chamber system with integrated LED driver. Luminaire output: 23.5 W LED, DALI controllable luminaire (DALI only) with LED converter. LED service life 50,000 h until luminous flux drops to 90% of the initial value. Color tolerance (initial MacAdam): 3. Luminaire luminous flux: 3390 lm, luminaire luminous efficacy: 144 lm/W. Color rendering Ra > 80, color temperature 4000 K. Glare limitation UGR<19. Light control and glare control of the direct light component via light chamber system with prismatic light exit surface in matt white. Closed optical system with contact protection of the LED modules against damage from electrostatic discharge, luminaire housing made of extruded aluminum profile, powder-coated in white with a visible side height of 27mm, die-cast aluminum end parts in luminaire color white, coated. Rear cover made of sheet steel, white powder-coated. Luminaire wired halogen-free. Luminaire can also be mounted as a light strip using accessories. Dimensions: 1580 x 128 x 39 mm. Weight: 4.5 kg.