absolute control over emitted light thanks to patented nano-optics; variable suspension spacing ranging from 700 - 960 mm; enable the light to be installed onto suspension fittings left over from previous lighting; basic beam angle: wide beam (WB); optimal mounting height: 2.5 to 4 m; digitally dimmable DALI driver (AC/DC), backup power supply with self-test. and operating time 3 hrs.; emergency back-up power supply for permanent and emergency lighting, connected to L3 (lum. flux 440lm); Body: dark grey ABS (high chemical resistance, UV stability, RAL 7001); Diffuser: clear AC with nano-optics (high mechanical resistance, UV stability); Reflector: steel sheet, white (RAL 9003); Clips: polyamide + 15 % fibreglass; Sealing: polyurethane (PUR), foam-filled base groove; Connection: screwless seven-pole terminal block; Power: 20,1 W; Luminaire flux: 2870 lm; Lifetime: L90/B10; 50000 hours; Impact strength: IK06; Ambient temperature: 0|40 °C; Weight: 2 kg;