Nordeon Idun LED-recessed luminaire, Class I, visible surface: IP40 / ceiling side: IP20, 220-240V, 50-60Hz, for general lighting. For ceilings with exposed T-profiles. Module size 1250x312 mm. Housing made from white steel, higly efficient prismatic optic made from PC. Weight: 5,1 kg. Extremely energy efficient throught high-quality LED components. Luminaire luminous flux 4100 lm, system power 42 W. Luminaire efficacy of: 98 lm/W. Wide beam light distribution curve. With high efficient mid-power quality LED, Philips Xitanium LED driver DALI, The average lifetime of LED is 70.000 hours at 20% decrease of light flux (L80B10); CRI >80, Lightcolour 3000K, warm-whiteWith integrated Helvar Idim daylight and presence detector which providess 4 pre-programmed operating modes for different applications. Simple electrical connection with the reverse-polarity protected Linect® connector but can also be connected in the conventional way (with strain relief).