The Leviton O2C dual relay occupancy sensors combine line voltage dual relay occupancy sensors and photocells into a self contained unit. The integrated design alleviates the need for separate power pack and occupancy sensor wiring making it a low cost, efficient energy solution for new construction and retrofits. For true daylight harvesting applications, integrated photocells provide consistent daylight design levels by actively switching the connected load(s) ON and off in response to available natural light to maximize energy savings. Vacancy timers continually analyze and adjust to changing conditions using the latest microprocessor based technology to optimize performance. Auto ON/ auto-off automatically turns lights-on and keeps them ON when occupancy is detected and automatically turns lights off when the space is vacant or unoccupied. Wire terminals allow for simple connection to a line voltage circuit and are ideal for existing buildings with limited access to wiring and new construction.