absolute control over emitted light thanks to patented nano-optics; variable suspension spacing ranging from 970 - 1230 mm; enable the light to be installed onto suspension fittings left over from previous lighting; basic beam angle: narrow beam (NB); optimal mounting height: 7.5 to 12 m; electronic driver ON/OFF (AC, DC on request), backup power supply with self-test. 3 hours operating time.; 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 five-pole terminal block, 5-wire connecting cabling for feed-through installation (1.5 mm2 cross-section, 2.5 mm2 available on demand); Power: 47,4 W; Luminaire flux: 6980 lm; Lifetime: L90/B10; 50000 hours; Impact strength: IK06; Ambient temperature: 0|40 °C; Weight: 2,4 kg;