The Lamar Lighting Occu-Smart Cordelia Series is a premium grade fluorescent fixture designed for long-term, dependable service. The Occu-Smart Cordelia is a unique luminaire controlled by an integral ultra-sonic motion sensor, designed to provide safe, dependable illumination while conserving energy. Areas are fully lit only as needed. Ideal for stairwells, restrooms, laundry rooms and other areas where maximum light levels are not required on a constant basis. These fixtures offer safety and security with full light output instantly upon occupancy.