chemically resistant, dustproof and waterproof industrial light fitting made of painted aluminium alloy; heat-strengthened safety glass with shatter pursuant to ČSN EN 12150-1; 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 aluminium profile, powder coated; Diffuser: satin, heat-strengthened safety glass; Reflector: steel sheet, white (RAL 9003); Clips: stainless steel; Sealing: polyurethane (PUR) in the groove on the body; 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: 27,3 W; Luminaire flux: 3440 lm; Lifetime: L90/B10; 50000 hours; Impact strength: IK10; Ambient temperature: 0|40 °C; Weight: 4,6 kg;