A motion detector is a device that detects moving objects, particularly people. A motion detector is often integrated as a component of a system that automatically performs a task or alerts a user of motion in an area. Motion detectors form a vital component of security, automated lighting, home control, energy efficiency, and other useful systems.
Read more about Motion Detector: Overview, Sensors, Dual-technology Motion Detectors
Famous quotes containing the word motion:
“in the mind of man,
A motion and a spirit, that impels
All thinking things, all objects of all thought,
And rolls through all things.”
—William Wordsworth (1770–1850)