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The Aqara Presence Sensor FP2 uses millimeter-wave technology, which is sensitive to moving objects. The more marks set, the more ac curate detection the sensor can make.
1) Interference: Living and office spaces often have moving targets such as curtains , fans, green plants moved by wind, and clothes hanging. If these sensors faces these objects , a false alarm may easily occur, so it needs to be mar ked as an interference source. Currently, the interference source marking is mainly for object s with smaller emission signal s, such as green plant s and running water.
2) Edge: The setting of the edge is mainly used to counteract false targets caused by a wall or other object reflection signals. The area out side the wall is also suggested to be set as the edge.
3) Entrance and Exit: It can accelerate target creation and deletion speed and improve the user experience.