Occupancy sensors have two tasks: Keeping the lights ON while the room is occupied and saving energy by keeping the lights OFF while the room is unoccupied. Passive infrared (PIR) is an excellent and precise technology for initially 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. Leviton...s OSW12-RMW sensor combines the benefits of both PIR and U/S technologies for unrivaled performance and reliability. Additionally, the sensor is designed with an isolated relay contact, enabling the sensor to interface with other systems (example: BAS, HVAC or any drycontact capable device or system).
