Downlight luminaires with aluminum housing, high luminous efficacy and external DALI-2 driver including energy monitoring. : Lifetime (L80/B10): up to 100,000 h (at 25 °C). Consistent lighting color ≤ 3 SDCM. External driver with Multi Lumen function of up to 5580 lm. Aluminum luminaires with 3 different cut-outs and opal diffuser. Very homogenous light distribution. : Energy savings thanks to high system efficacy: up to 155 lm/W. Through wiring possible via included connector box. High grade polycarbonate front frame for reduced overall luminaire weight. Uniform light with minimized glare thanks to included reflector and diffuser. Well suited for retrofitting using an extension ring as separate accessory. DALI-2 certified incl. Parts 251, 252, 253. Push-DIM application for easy control. : Direct replacement for recessed luminaires with fluorescent lamps. Offices, conference rooms. Reception areas, foyers, corridors, elevators. : Security rope for luminaire included. External control gear included. Connector box with 5-pole terminal included. Surface mounting frame only available for DALI versions D200 and D250 as separate accessory. Gray and black exchangeable rings available as separate accessory. Extension rings are available as separate accessory. Extension ring D190 for retrofitting D150 luminaire, extension ring D240 for retrofitting D200 luminaire. : All electrical connections must be made by a qualified person.. Caution, risk of electric shock.. The luminaires are not suitable for covering with thermally insulated material..