Recessed LED luminaire Design: Recessed LED single luminaire for 600 or 625 modular ceilings. Rigid luminaire housing in white powder-coated steel (similar to RAL 9016) with square 4-row lens arrays for high-efficiency light yield. Diffuser held in the luminaire housing with spring catches, hinges down on both sides. LED modules formed as a flat board. Mid-power LEDs for even illumination and maximum efficiency. LED driver prefitted in luminaire housing. Colour rendering in index Ra >= 80, colour temperature 4000 Kelvin (840) DALI: Electronic DALI converter for LED, 220-240 Volt, 0/50-60 Hz and internal connector block. Suitable for direct voltage operation and use in central battery systems, 220-240 VDC. Mounting: Installation in ceilings with concealed support rails and asymmetric ceiling tiles using suitable fixing kit (accessory). LENSES-EU… Luminaires predominantly for mounting in system ceilings with invisible T- bars and asymmetrical ceilings.