M450 Series motion sensing Bi-Level lighting system OSS/Advanced Occupancy Sensing System integrated into a Vandal-Resistant luminaire. A unique new idea in energy savings and management. The Lumasense is a motion sensing bi-level vandal-resistant luminaire. It incorporates Mercurys latest technology, OSS/advanced occupancy sensing system. Compact design complies with all ADA requirements for public areas. Emergency pack.