Wall surface luminaire; aluminium body; surface Raw aluminium; with COB (Chip on Board) technology for maximum efficiency; DALI Push dim; light colour 2700 K; ≤ 3 SDCM (initial MacAdam); CRI ≥ 90; indirect light distribution; degree of protection IP20; Class 1; light source replaceable by Wever & Ducré or by a professional with explicit authorization; control gear replaceable by end-user; General: Wall, Surface, Lamp Body Raw aluminium, IP20, Interior, 2090 lm LED: lamp COB LED, 2700 K, CRI ≥ 90, L80 / 50000h, ≤ 3 SDCM (initial MacAdam) , ≤ 3 SDCM (initial MacAdam) , 2400 lm, 143 lm/W Optical: UGR ≤ 10, CIE flux code: 0 0 1 0 100, PstLM ≤ 1.0, SVM ≤ 0.4 Electrical: DALI Push dim, 220 - 240 V, system 20.3 W, Class 1, 1 DALI Addr. Physical: diameter 161 mm, height 105 mm, 0.7 kg Material: Lamp Body Aluminium 164W220274