The Leviton Provolt™ series combine line voltage 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. Sensors combine both PIR and U/S technology for unrivaled performance and reliability Auto-adapting: time delay and sensitivity are continually adjusted to occupancy pattern of use Configurable for manual on/auto off or auto on/auto off Delayed off timer: The sensor will turn lights off if no motion is detected after a specified time Exclusive walk-through feature provides increased energy savings by not leaving the lights on for an extended period after only momentary occupancy