Which device is described as a buried ported coax sensor used to detect boundary penetrations?

Which device is described as a buried ported coax sensor used to detect boundary penetrations?

• A. A handheld alarm pendant
• B. A software module for monitoring
• C. A buried ported coax sensor with an electromagnetic field used to detect boundary penetrations/intrusions
• D. A backup battery

Answer: (C)

Perimeter intrusion sensing relies on sensors placed around a boundary to detect unauthorized entry. A buried ported coax sensor is exactly the kind of device used for this purpose: a loop of coax laid underground around the boundary creates an electromagnetic field. When the boundary is penetrated, the field is disturbed, altering the signal at the sensor port and triggering an alarm. The buried design keeps it hidden and physically aligned with the boundary, while the ported connection to monitoring electronics detects even small changes in the field. The other options don’t fit because a handheld pendant alerts a person, a software module is not a physical boundary sensor, and a backup battery provides power rather than sensing.

Perimeter intrusion sensing relies on sensors placed around a boundary to detect unauthorized entry. A buried ported coax sensor is exactly the kind of device used for this purpose: a loop of coax laid underground around the boundary creates an electromagnetic field. When the boundary is penetrated, the field is disturbed, altering the signal at the sensor port and triggering an alarm. The buried design keeps it hidden and physically aligned with the boundary, while the ported connection to monitoring electronics detects even small changes in the field. The other options don’t fit because a handheld pendant alerts a person, a software module is not a physical boundary sensor, and a backup battery provides power rather than sensing.