Square light fitting made of aluminium; seamlessly welded; surface black powder coated; suspended luminaire with 2000mm cable suspension (canopy central); height adjustment without tools; incl. transparent feed; electronic operating unit installed in the canopy; light colour 4000 K; binning initial MacAdam ≤ 3 SDCM; CRI ≥ 90; min. 90% of luminous flux after 50000 operating hours; energy efficient LEDs with high CRI; HPO (High Performance Opal) cover for uniform illumination; inwards facing emission characteristics; direct/indirect light emission for additional accentuation of the ceiling; canopy with 2 cable openings and plug-in terminal for through wiring; degree of protection IP20; PC1 220-240V; photobiological safety according to IEC 62471 risk group RG 0 - no Risk; internal wiring in light halogen free; incl. DALI-2 converter; light source replaceable by an authorized professional; control gear replaceable by an authorized professional; General: Ceiling, Suspended, black, RAL9005, IP20, indirect 2680 lm, direct 2680 lm, total 5360 lm LED: 4000 K, CRI ≥ 90, L90 / 50000 h, photobio. safety RG 0 - no Risk, initial MacAdam ≤ 3 SDCM , Rg: 99, Rf: 92, R{1-15}: 90, MR 0.81, MDER 0.74 Optical: High Performance Opal, PstLM ≤ 1.0, SVM ≤ 0.4 Electrical: DALI-2, 52 W, PC1 220-240V, 103 lm/W, 1 DALI Addr. Physical: cable 2000 mm, length 1010 mm, width 1010 mm, height 60 mm, 4.5 kg 034-4443638H