Leviton OSSMD-MDE Dual-Relay Decora Wall Switch, Multi-Technology Occupancy Sensor, Black OSSMD ideal for bi-level offices, partitioned areas and restrooms or areas where minor motion is likely to occur Single-pole and 3-way wiring Exclusive automatic "walk-through" sensing increases energy savings by shutting lights within 2 1/2 minutes after momentary occupancy Manual override turns lights on at any time regardless of override setting