The Occupancy sensor operates by detecting the movement of infrared radiation emitted by humans. When an occupant enters the field of view of the Fresnel lens mounted in front of the IR sensor, it detects a change in received energy and activates the lights automatically. As long as movement is detected, the lights remain on. Once movement ceases, the sensor switches off the lights after a preset delay.
Additionally, the light sensor maintains illumination in the room at a preset level when movement is detected by the occupancy sensor. Constantly measuring the light level in the room, it adjusts for both artificial and natural light sources. By controlling the artificial fixtures, it ensures light levels are maintained at the pre-set level based on the combination of both light sources and human presence in the area.
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