Ring-shaped light fitting in rolled and seamlessly welded extruded aluminium profile; suspended luminaire with 1500mm cable suspension (canopy central); with integrated toolless suspension height adjustment on the luminaire; incl. feed (white); surface grey powder coated; LED light inset consisting of highly reflective lacquered aluminium for improved thermal management; light colour 3000 K; binning initial MacAdam ≤ 3 SDCM; CRI ≥ 80; min. 90% of luminous flux after 50000 operating hours; energy efficient LEDs with high CRI; micro prismatic PMMA diffuser incl. diffuser film for homogeneous illumination and reduced luminance; direct/indirect light emission for additional accentuation of the ceiling; indirect light component with special PCBs for increased luminous flux and maximum ceiling illumination; degree of protection IP20; PC1; 220-240 V; internal wiring in light halogen free; incl. DALI-2 converter; sound absorbing accessories available; light source replaceable by an authorized professional; control gear replaceable by an authorized professional; General: Ceiling, Suspended, grey, RAL9006, IP20, indirect 3010 lm, direct 5710 lm, total 8720 lm LED: 3000 K, CRI ≥ 80, L90 / 50000 h, initial MacAdam ≤ 3 SDCM , MR 0.56, MDER 0.51 Optical: Microprismatic, microprismatic, UGR < 19, PstLM ≤ 1.0, SVM ≤ 0.4 Electrical: DALI-2, 220-240 V, system 71 W, PC1, system 123 lm/W, 5 DALI Addr. Physical: cable 1500 mm / canopy central, diameter 1060 mm, height 80 mm, centerline radius 500 mm, 9 kg 034-241353GZ