What is the primary function of a motion sensor in a security system?
To record video footage continuously
To detect movement within a designated area
To provide illumination for dark areas
To sound alarms upon manual activation
A motion sensor detects movement in an designated area, allowing for timely monitoring and response to potential security breaches. This mechanism is essential in activating alarms or surveillance cameras when unauthorized motion is detected.
Other options may describe different components of security systems, but they do not match the specific function of detecting motion.
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