42187689 SLOIN R D 8500-940 MSC D1500 MPO LDE WH Ring-shaped direct distribution LED surface-mounted luminaire, with slim aluminium profile housing in white and MicroPrism Technology optic, ; DALI controllable luminaire with LED converter; LED service life lasts 50000 h before luminous flux is reduced to 90% of the initial value. Chromaticity tolerance (initial MacAdam): 3. Luminaire luminous flux: 8253 lm, Luminaire efficacy: 89 lm/W. Colour rendering Ra > 90, colour temperature 4000 K. Light guided via micro-pyramidal optic with multi-layer construction for defined light emission with UGR < 19. Housing made of rolled aluminium extruded section, seamlessly welded, white powder-coated for a high quality surface finish; accessories for ceiling or wall surface-mounting are supplied. Luminaire wired with halogen-free leads. Glow-wire test: 650°C; Luminaire wired with halogen-free and silicone-free leads; Dimensions: Ø1500 x 85 mm, weight: 11 kg.