LED ceiling-recessed luminaire (pre-assembled luminaire), designed for use where space is limited in ceiling: recess depth only 100mm; "tunable white" LED luminaire, dynamic variation of colour temperature with constant luminaire luminous flux can be controlled via DALI signal (DT8 2010 DALI system); symmetric wide-beam light distribution with maximum luminaire efficiency and optimum photometric properties; lamp(s): 22 W LED927-65; colour-temperature variation: 2700-6500K (warm white – neutral white – daylight white); Luminaire luminous flux: 1068 lm, Luminaire efficacy: 49 lm/W; colour rendering index: RA90; 50,000h service life at 70% luminous flux; includes controllable ballast, dimmable Dali only (separate unit); control only possible via CIRCLE TUNE or LITECOM (DT8 2010); colour temperature and 15-100% illuminance adjustment can be controlled via DALI signal; high-quality reflector unit fixed to modular LED lighting chamber by twist-and-lock mechanism; high efficiency LED lighting chamber integrated in optimised, passive thermal management system made of extruded aluminium section; lighting chamber and reflector unit appear as one harmonised unit; smooth reflector in aluminized mirrorbrite and iridescent-free finish; reflector/trim made of high quality, UV-resistant polycarbonate; cover ring white; mounting ring made of Glass fibre-reinforced polycarbonate (PC), grey; luminaire unit can be fitted quickly without tools thanks to simplified twist-and-lock mechanism; luminaire wired with halogen-free leads; electrical connection: 5-pole terminal; through-wiring not 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: 150mm, recess depth: 100mm; weight: 1.14 kg; Note: To achieve EN12464 compliance in office applications (UGR<19), please order an additional antiglare ring