Silica®, office luminaire. * lighting technology 1: - primary light control with wallwasher, of aluminium, - primary beam angle: wide distribution, - light emission: direct distribution, - primary light characteristic: asymmetric. * mounting: - installation arrangement: single arrangement, - installation type: surface-mounted, - installation location: to the ceiling. * electrical 1: LED, - rated luminous flux: 4.680lm, - luminous efficacy: 160lm/W, - light colour: 840, - colour temperature: 4000K, - colour rendering: CRI > 80, - control gear: ECG DALI, - with terminal, 3+2-pole, max. 2.5mm², - mains connection: 230V, AC, 220..240V, 50/60Hz, - rated input power: 29W. * component: - luminaire housing, of aluminium, traffic white (RAL 9016). - length: 1.442mm, width: 65mm, height: 64mm, - weight: 3,6 kg. * testings/approvals/admissions: - protection rating (complete): IP20, - insulation class (complete): insulation class I (protective earthing), - certification: CE, - permissible operating ambient temperature: 0..+35°C, - standard: EN 50419. * service life: - rated service life: 50.000h (L85/B50) at AT= 25°C. - packaging unit: 1 piece. * manufacture: Siteco, Silica®. * type: 5MX22WD1W4A.