Robus Surface Motion Detector is slim profile, high quality presence detector is ideal where the ultimate in energy savings are required. Combining passive infra-red and photocell technology, it ensures the lighting comes on only when natural light alone is not enough, although the lux level setting may be set to ensure lighting and fans are activated in toilet areas. It is suitable for switching resistive or fluorescent type loads in all building types and finds applications for switching lighting in commercial offices, stairways, sheds, kitchens, back of house area, corridors etc. Features with injection moulded ABS body, rear and side entry knockouts, integral cable clamp, integral sensor dust shield, elongated fixing slots, passive infra-red and photocell.