LaMar Lighting's Occu-Smart VO-LED comes in 2' and 4' lengths, with several light level options. Occu-Smart fixtures come controlled by highly sensitive ultra-sonic motion sensors which trigger the light levels from low to high upon occupancy. Low standby light levels can be adjusted to 5, 10, 20 or 30 percent of full output with standby wattage as low as 4 watts. LED modules come rated for over 50,000 hours and offer long economical operation, saving energy over standard fluorescent fixtures.