LED ceiling-recessed luminaire (pre-assembled luminaire), "Stable White"; shielding angle 60°; lamp(s): LED1600-940; Colour rendering Ra > 90, colour temperature 4000 K (neutral white); Chromaticity tolerance (initial MacAdam): 2; total power: 15 W; Luminaire luminous flux: 1508 lm, Luminaire efficacy: 101 lm/W; service life: 50000h at 95% 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 in white painted finish; 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: 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: 110mm (ceiling thicknesses: 1-15mm); weight: 0.57 kg; Note: UGR<19 for office applications compliant with EN12464 (depending on luminaire type)