LED ceiling recessed luminaire with digitally dimmable, DC voltage-compliant LED converter for DALI control (DALI DT8 2010) with one DALI address for simultaneously controlling central and side area; total power: 20.9 W. LED service life lasts 50000 h before luminous flux is reduced to 80% of the initial value. Luminaire luminous flux: 2670 lm, Luminaire efficacy: 128 lm/W. Colour rendering Ra > 80, colour temperature 3000 K. Use in clusters with uniform appearance is possible due to factory calibration with Tunable White. Diffuse side areas for pleasant ambient lighting and high quality lens optic (Advanced Crystal Optic) for central area for glare-free lighting with UGR < 19 and L65 < 3000 cd/m² and rich-contrast appearance, internal 5-pole plug-in terminal block (can be connected from inside or outside); can be installed as a single luminaire or in a cluster; designed to fit in ceiling apertures cut with a saw and in modular ceilings with concealed or visible joist system; fixing set and strain relief must be ordered separately; Luminaire wired with halogen-free leads; Dimensions: 1000 x 60 x 85 mm, weight: 1.5 kg