LED ceiling-recessed luminaire without cover frame "trimless" , "Stable White"; cut-off angle 45°; lamp(s): 10 W LED927; Colour rendering Ra > 90, colour temperature 2700 K (warm white); Chromaticity tolerance (initial MacAdam): 3; Luminaire luminous flux: 766 lm, Luminaire efficacy: 77 lm/W; service life: 50000h at 90% luminous flux; includes control unit Slave luminaire for DALI control (DALI only); modular, high quality optical unit consisting of reflector and LED light chamber integrated in optimised thermal management of die-cast aluminium; smooth reflector gold colour coated, matt; reflector made of high-quality, UV-resistant polycarbonate; luminaire unit fitted quickly without tools using twist-and-lock mechanism; luminaire wired with halogen-free leads; power connection: 5-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 (ceilings of thickness 1-15mm); weight: 0.55 kg; Note: UGR<19 for office applications compliant with EN12464 (depending on luminaire type) Note: Please order seating ring (planar ring) separately for installing the luminaire flush with the ceiling (see Accessories)