Philips OccuSwitch Classic wall sensor is used to provide automatic lighting control for energy savings and convenience in a variety of commercial applications. Utilizing Passive Infrared (PIR) and Ultrasonic Sensing (U/S) for occupancy detection, this sensor provides automatic lighting control for energy savings in a variety of commercial applications.The PIR sensors provide protection against
false on through a specialized Fresnel lens which divides the field of view into sensor zones.When a person passes into or out of a sensor zone, the sensor detects motion and switches the lights on.The ultrasonic sensors provide maximum sensitivity and range in difficult spaces with irregular shaped rooms and partitions that can block the PIR
field of view. A pair of ultrasonic sensors will detect Doppler shifts caused by motion in a space reducing false off. These sensors are more sensitive to small movements since they do not rely on zones.