{{ profileData.stats.submittedAnswerCount }}
{{ profileData.stats.helpfulnessScore }}
Miscellaneous
How does the motion detection work?
2
Many motion detectors use ultrasonic sound, and detect if the noise bounces off an object/person/animal moving through an area. Some detectors may use infrared sensors instead.
174
Rating
Motion detection works by lighting up a place or making noise,when sensors are triggered by the motion of,a person, animal,or other moving thing coming into close range with a device that has motion detection,ie. a light by your door(with motion detection) comes on when someone walks up to it.
66
Rating
Similar questions
{{similarQuestion.category}}
•
{{similarQuestion.answerCount}}