LED ceiling-recessed luminaire (Komplettleuchte), "Stable White"; cut-off angle 45°; lamp(s): 11 W LED840; Colour rendering Ra > 80, colour temperature 4000 K (neutral white); Chromaticity tolerance (initial MacAdam): 3; Luminaire luminous flux: 957 lm, Luminaire efficacy: 87 lm/W; service life: 50000h at 85% luminous flux; includes control unit ; modular, high quality optical unit consisting of reflector and LED light chamber integrated in optimised thermal management of die-cast aluminium; smooth reflector in highly reflective aluminized finish, iridescence-free; reflector/trim made of high-quality, UV-resistant polycarbonate; cover ring white; mounting ring of Glass fibre-reinforced polycarbonate (PC), grey; luminaire unit can be fitted quickly without tools using twist-and-lock mechanism; IP44_IP20; luminaire wired with halogen-free leads; power connection: 3-pole connector terminal, loop-in/loop-out possible; mains voltage: 220-240V / 0/50/60Hz, for use with 220V DC central battery; tool-free quick installation using antislip spring clips in ceilings of thickness 1-40mm; ceiling cutout: 100mm, recess depth: 130mm; weight: 0.52 kg; Note: UGR<19 for office applications compliant with EN12464 (depending on luminaire type)