LED safety light for escape route lighting with min. 1 lux in accordance with EN 1838, room height 2.2 to 7 m, 2 high power LEDs, neutral white 4,000 K, lens made of polycarbonate (PC), optimal thermal management using a cooling plate, recessed ceiling light for 68 mm ceiling cutout and ceiling thicknesses of 1-25 mm, tool-free quick installation of the light using specially shaped retaining springs, tool-free replacement of the operating device, cover ring made of die-cast aluminum, powder-coated, housing color white (similar to RAL9016), device box for ceiling insertion made of polypropylene (PP), light for central emergency light supply for individual monitoring of the light via DALI (DALI-2 certified), adjustable emergency light level, NFC interface for addressing, configuration and maintenance using PROset Pen (item no.: 22170290) or PROset app, addressing also possible optically or via EZ addressing, permanent and standby mode: -40°C to +45°C, power supply: 220-240 V AC (+/- 10%) 50-60 Hz, 176-280 V DC, light output: 3.9 W (in permanent mode), connected load in standby mode: 0.3 W, standby and permanent mode adjustable via the central battery system, boost start function for faster orientation in an emergency due to higher lighting levels at the start of emergency operation, IP40, SC1, light wired halogen-free and silicone-free, suitable for installation in a concrete casting housing to be ordered separately, plug-in terminals for through-wiring up to 2.5 mm², impact resistance: IK04, dimensions: diameter 85 x 4 mm, weight: 0.21 kg,