Flat and modular LED TECTON surface-mounted luminaire with lens optic. Total power: 27.8 W, with LED converter; LED service life lasts 50000 h before luminous flux is reduced to 85% of the initial value. Chromaticity tolerance (initial MacAdam): 3. Luminaire luminous flux: 3740 lm, Luminaire efficacy: 135 lm/W. Colour rendering Ra > 80, colour temperature 4000 K. Light control via square lens optic for glare-free light distribution with UGR < 16 and L65 < 1500 cd/m² to EN 12464-1; low dirt sensitivity and simple cleaning; flat sheet steel luminaire housing with powder coated finish in white; Luminaire with TECTON adapter for simple and straightforward installation of luminaire on the TECTON continuous-row lighting system; luminaire housing with visible luminaire height of 52mm; Luminaire wired with halogen-free leads; Dimensions: 1200 x 300 x 52 mm, weight: 7 kg