Philips OccuSwitch Classic occupancy sensor uses Ultrasonic (U/S) and Infrared (IR) sensing to provide the highest degree of immunity to false tripping. The sensor also contains auto-adapting circuitry that fine tunes the delay settings. This occupancy sensor uses ultrasonic sensing for maximum motion sensitivity and infrared sensing for high
lights-off reliability. It uses the latest microprocessor-based technology which permits the detector to continually adjust and optimize its performance. The detector requires a 24V Philips LCA Series Power Pack. By combining ultrasonic and infrared technology, the occupancy sensor provides excellent small motion sensitivity (U/S) and error immunity (IR). The mounting base, provided with the sensor, allows quick and easy mounting in corners, on walls or on ceilings using the unique twist and lock feature.