Leviton OSSMT-GDE Multi-Technology PIR/Ultrasonic Wall Switch and Occupancy Sensor, Black OSSMT ideal for private and Executive offices, conference rooms, storage areas, restrooms, classrooms, lounges, and training areas, or areas where minor motion is likely to occur Photocell with ambient light override prevents lights from turning on when there is ample natural light Manual override turns lights on at any time regardless of override setting Manual delayed-off-time settings: (10, 20, and 30 minutes) compensates for real-time occupancy patterns, preventing unnecessary ON/OFF switching - with 30-second test mode Single-pole and 3-way wiring