Luminary body is made from white or grey polycarbonate. Flush mounting (ceilings). The highly efficient LED sources of 1 W or 3 W make the light sources. There are three kinds of optical systems to be selected: for escape routes illumination, any open space or asymmetric. The maximum charging time is 12 or 24 hrs. The Ni-MH and Ni-CD batteries can operate within luminaries. It has IP20 protection level against water and dust penetration. Supply voltage: Autonomous luminary - 220-240 VAC/50-60 Hz. Luminary for CB central battery - 220-240 VAC/50-60 Hz; 175-275 VDC. Luminary for RUTA CEN central battery - 24 VDC. Permissible ambient temperature: 0° C - 40° C. Additional information: LED signalizing the presence of voltage and battery charging Deep discharge protection. Luminary in 3rd class of low voltage protection of RUTA CEN central base.