Suitable for use in sheltered outdoor common areas gardens hotel pub and restaurant walkways and complete with ceramic E27 lamp holder this Robus fitting can be used with energy saving LED CFL lamps and max 60W incandescents. ABS UV-stabilised housing with Polycarbonate diffuser along with stainless steel screws give way to a wide ambient operating temperature range of -20 degrees to 40 degrees. Photocell version Switches light on automatically at dusk and remains on until daybreak. Comes on at 20 lux goes off at 50 lux.