Multi-Technology, Occupancy Sensor, Wall Mounted, 24VDC, 25mA power consumption, 1200 sq ft, 115 degree (major motion: PIR 68' radius, Minor motion: PIR 60'x30', U/S 32'x32'), Red LED=PIR, Green LED=U/S, auto adapting, walk-through, time delay 30s-30m, test mode (6s time delay for 15m with auto exit), connect gray wire for photocell ambient light hold-off, 360 degree harmonic wheel(rotatable), mounting height 8'-10', Patented Canopy Knuckle for versatile wall and ceiling mounting options, cUL/NOM listed, Color: true-white.. NOTABLE FEATURES: Occupancy sensors have two tasks: 1) Keeping the lights on while the room is occupied. 2) Saving energy by keeping the lights off while the room is unoccupied.  Passive infrared technology is an excellent and precise sensing of motion for turning the lights on, but lacks sensitivity for minor motion at distances. Ultrasonic (U/S) technology provides maximum sensitivity with continuous reflective high frequency waves. This is optimal for keeping the lights on. The OSW12-MWW combines the benefits of both PIR and U/S technologies for unrivaled performance and reliability.