LED ceiling recessed light without cover ring 'trimless', use where space in the ceiling is limited: installation depth 90 (R9>50), color temperature 4000 K (neutral white), color tolerance (initial MacAdam): 2, luminaire power: 15 W, luminaire luminous flux: 1864 lm, luminaire luminous efficacy: 124 lm/W, service life: 100,000 hours at 90% luminous flux or 50,000 hours at 95% luminous flux, with separate ballast unit DALI controllable light (DALI only), high-quality reflector unit locked to modular LED light chamber via bayonet lock, highly efficient LED light chamber integrated in optimized, passive heat management made of die-cast aluminum, reflector: smooth, painted white, reflector made of high-quality, UV-resistant polycarbonate (PC), tool-free quick assembly of the light unit using bayonet lock, IP20, light halogen-free wired, connection: 5-pin plug connection terminal, loop-through possible, mains voltage: 220-240V / 0/50/60Hz, central battery compatible 220V DC, installation: tool-free quick installation using anti-slip retaining springs for ceiling thicknesses of 1-40mm, ceiling cutout: 150mm, installation depth: 81mm (ceiling thicknesses 1-25mm), weight: 0.71 kg, note: mounting ring (planar ring) for flush installation of the luminaire must be ordered separately (see accessories), for office applications in accordance with EN12464 (UGR<19, reflector type aluminum sputtered) an additional anti-glare ring must be ordered separately