Zumtobel has added the Integral Daylight/Occupancy Sensor (IDOS) to its line of ETHOS and SPHEROS T5 fluorescent luminaires. The 2-inch-diameter sensor is connected to a DALI ballast, which provides individual control of the luminaires. The pre-programmed Plug-and-Play unit senses and responds to light levels in a room, and includes a remote control that can independently operate luminaires. The IDOS also detects motion in a room and turns lights on or off correspondingly.