Silica® 31 Desk, desktop luminaire. * lighting technology 1: - secondary optical cover: cover panel, of PMMA, - UGR viewing direction along longitudinal luminaire axis ≤ 16 (X = 4H | Y = 8H | S = 0.25H | reflection values 70/50/20), - UGR viewing direction along lateral luminaire axis ≤ 16 (X = 4H | Y = 8H | S = 0.25H | reflection values 70/50/20), - primary emission direction: below, - primary beam angle: wide distribution, - secondary emission direction: above, - light emission: direct/indirect distribution, - light output distribution: 76:24, - primary light characteristic: symmetric. * mounting: - installation type: as desk luminaire. * electrical 1: LED, - rated luminous flux: 8.520lm, - luminous efficacy: 120lm/W, - light colour: 8tw, - colour temperature: 2700..6500K, - colour rendering: CRI > 80, - daylight-dependent control, - with cable with plug, - mains connection: 230V, AC, 50Hz, - connection cable pre-assembled, - rated input power: 71W, - with ambient light and presence detector. * component: - luminaire head, of aluminium, jet black (RAL 9005). - length: 1.203mm, width: 52mm, - weight: 4,3 kg. - supporting column, angular, of aluminium, jet black (RAL 9005), - quantity: 1 piece(s). - baseplate, of steel, jet black (RAL 9005), - quantity: 1 piece(s). * testings/approvals/admissions: - protection rating (complete): IP20, - insulation class (complete): insulation class I (protective earthing), - certification: CE, - permissible operating ambient temperature: -20..+40°C, - standard: EN 50419. * service life: - rated service life: 100.000h (L80/B10) at AT= 25°C. - packaging unit: 1 piece. * manufacture: Siteco, Silica® 31 Desk. * type: 51MY52GATCB.