Controlled by ultrasonic motion sensors, UL-listed occu-smart® series delivers illumination when space is occupied and dims for energy-savings when space is unoccupied. LED driver lets installers adjust full-output light levels in field; option of multiple low-light, or standby, levels offer energy savings up to 88% of full output. Available with standby wattages as low as 3.5 W for 2 ft model and 5 W for 4 ft model, fixtures also offer customizable time delay and LED boards with metal core PCBs.