Federal Protective Service (FPS) Protective Security Officer Practice Test

The purpose of audio sensors in a security system primarily revolves around their capability to activate alarms based on sound. These sensors are designed to pick up specific noises that may indicate unauthorized intrusion or other security breaches, such as breaking glass, loud shouting, or footsteps. When the audio sensor detects these specific sounds, it can trigger an alarm to alert security personnel or the authorities, thus enabling a timely response to potential threats.

While detecting movement of intruders is a critical function of security systems, that specific purpose is generally associated with motion sensors rather than audio sensors. Audio sensors focus more on sound detection rather than motion. Monitoring temperature changes falls under environmental sensors, which serve other critical functions in security systems, such as detecting fires. Controlling lighting in an area is related to lighting control systems, which do not have a direct correlation with the function of audio sensors. Thus, the use of audio sensors is fundamentally geared towards sound detection to enhance the overall security measures by allowing for a responsive approach to disturbances detected through sound.