Rondel 41-M, wall and ceiling luminaire. * lighting technology 1: - primary optical cover: enclosure, of PMMA, opal, - primary emission direction: below, - primary beam angle: diffuse distribution, - light emission: direct distribution, - primary light characteristic: symmetric. * mounting: - installation arrangement: single arrangement, - installation type: surface-mounted, - installation location: to the ceiling, to the wall. * electrical 1: LED, - rated luminous flux: 2.300lm, - luminous efficacy: 105lm/W, - light colour: 830/840, - colour temperature: 3000/4000K, - colour rendering: CRI > 80, - control gear: ECG, - with terminal, 3-pole, max. 2.5mm², - mains connection: 230V, AC, 220..240V, 50/60Hz, - rated input power: 21W, - colour temperature can be selected via DIP switch. * component: - luminaire housing, round, of steel, powder-coated, white. - diameter: 330mm, height: 110mm, - weight: 0,7 kg. * testings/approvals/admissions: - protection rating (complete): IP44, - insulation class (complete): insulation class I (protective earthing), - certification: CE, - impact resistance: IK02, - permissible operating ambient temperature: -30..+40°C, - permissible storage temperature: -30..+80°C. * service life: - rated service life: 50.000h (L80/B10) at AT= 25°C. - packaging unit: 1 piece. Rondel 41-M. * type: 51WD107BG2A.