light fitting for industrial environments with no risk of explosion caused by gas, dust or flammable vapours, for installation onto tall ceilings; 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: steel sheet, white (RAL 9003); Diffuser: satin, heat-strengthened safety glass; Reflector: steel sheet, white (RAL 9003); Sealing: EPDM glued to the base of the light; Connection: connector, 0.4 m cable; Power: 128,7 W; Luminaire flux: 18410 lm; Lifetime: L90/B50; 50000 hours; Impact strength: IK10; Ambient temperature: 0|35 °C; Weight: 11,8 kg;