October 2018 — Question 45
A “leaky coaxial sensor cable” consists of a central conductor surrounded by an insulator, which is then surrounded by a secondary conductor. A low voltage power wire is located within the assembly. The secondary conductor has apertures that allow radio frequency (RF) energy to escape from one of the cables and are received by the corresponding parallel cable. This leaky cable device creates an electromagnetic detection field, which activates an audible and visual alarm when the amount of RF energy is disturbed. What is the CLASSIFICATION of this “Leaky coaxial sensor cable”, which functions as an outdoor intrusion detection sensor?
- A8504.40.9580
- B8518.21.0000
- C8531.10.0035
- D8531.90.9001
- E8544.20.0000✓ CBP's answer
CBP's cited authority
Answer and citations as published in CBP's official answer key for the October 2018 examination.
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