Single ceiling lights using 1x54W or 2x54W T16 fluorescent light source. Two lighting options: dark light and wall washer. Steel body with a white or grey paint finish. Electronic control gear, with or without dimming (Dali-Switchdim). Lamps can be maintained without removing the luminaire. Complies with standard EN60598-1 and other specific standards. Nota Bene ceiling dark light Super pure aluminum dark light optics. Dark light emission is in compliance with EN12464-1 standard, with average luminance levels lower than the1000 cd/m² limit for an observation angle of 65° or above with respect to the vertical axis. Light output ratio 71%. Emergency lighting as an optional extra. Nota Bene ceiling wall washer Asymmetric aluminum reflector.