unique design, resistant against humidity and dust, with IP66 enclosure rating and built-in aluminium heat sinks; optimal mounting height: 3.5 to 10 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: grey PC (high mechanical resistance, UV stability, RAL 7035); Diffuser: translucent PC (high mechanical resistance, UV stability); Reflector: steel sheet, white (RAL 9003); Clips: polyamide + 15 % fibreglass; Sealing: polyurethane (PUR), foam-filled base groove; Connection: external, 5-pole, 1.5 mm2 conductor cross-section (2.5 mm2 available on demand); Power: 64,7 W; Luminaire flux: 10580 lm; Lifetime: L90/B10; 50000 hours; Impact strength: IK10; Ambient temperature: 0|40 °C; Weight: 3,45 kg;