A security manager needs to implement a covert security control to detect an intruder stepping through a specific doorway. The control must be hidden under a floor mat. Which of the following sensors is best suited for this requirement?
Ultrasonic sensor
Pressure sensor
Microwave sensor
Passive infrared (PIR) sensor
A pressure sensor is the ideal choice for this scenario. Pressure sensors, often deployed as mats, are designed to detect changes in weight or pressure, such as when a person steps on them. They can be easily concealed under a rug or floor mat for covert detection. Microwave, passive infrared (PIR), and ultrasonic sensors are types of motion detectors that are typically mounted on walls or ceilings and are not designed for placement under a floor mat to detect pressure from footsteps.
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