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: medium beam (MB); optimal mounting height: 3.5 to 8 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: grey PC (high mechanical resistance, UV stability, RAL 7035); Diffuser: clear PC with nano-optics (high mechanical resistance, UV stability); Reflector: steel sheet, white (RAL 9003); Clips: stainless steel + polyamide; Sealing: polyurethane (PUR), foam-filled base groove; Connection: screwless five-pole terminal block; Power: 20,1 W; Luminaire flux: 3060 lm; Lifetime: L90/B10; 50000 hours; Impact strength: IK10; Ambient temperature: 0|40 °C; Weight: 2 kg;