Recessed LED luminaire Design: Recessed LED single luminaire for 600 or 625 modular ceilings. Rigid luminaire housing in white 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). Electronic 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 various ceiling systems using suitable fixing kits or lay-in mounting in exposed trunking ceiling systems with lay-in ceiling tiles. No additional fixing accessories are required for this.