light fitting certified for environments with potentially explosive atmospheres created by gas, dust or flammable vapours, group II, category 2 (zone 1/21); heat-strengthened safety glass with shatter pursuant to ČSN EN 12150-1; ON/OFF electronic driver, Ex battery box with ATEX certificate; 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: glued EPDM; Connection: ATEX, screwless WAGO, maximum cable cross-section: 4 mm2; Power: 27 W; Luminaire flux: 3360 lm; Lifetime: L80/B50; 50000 hours; Impact strength: IK10; Ambient temperature: 0|40 °C; Weight: 8,7 kg;