Recessed housing made of pressed steel sheet for flush installation in plasterboard ceilings, underside of aluminium-reinforced plaster; alternatively with round or square cut-out; no break-out of edges; 3 cylindrical spotlight heads can be installed without tools by means of magnetic holders; simple electrical connection of the spotlights due to non-reversible plug and play connection; spotlight head rotates 360° and tilts 90°; all spotlights together DALI dimmable; surface housing powder coated in white or black; optionally: indirect light component in housing continuously adjustable dimming via DALI; spotlight surface powder coated in white, black or gold; passive cooling of LEDs with optimised heat sink geometry; COB (Chip on Board) technology or high power LEDs for maximum efficiency; no multiple shadows; energy-efficient LEDs with very good colour rendering; binning initial ≤ 3 MacAdam; available in the light colours 2700K and 3000K; CRI ≥ 90; min. 80 % of the luminous flux after 50000 hours; good glare reduction due to recessed light point plane; incl. high quality lens system; precise radiation characteristics with different beam angles; degree of protection IP 20; PC I (power supply) or PC III (spotlights); hot plug protection; optional non-dimmable; flicker-free visual comfort through analogue current control (minimum value 1%)