____ use ultrasonic frequencies and microwaves to detect movement.
A) Intercom systems
B) Video surveillance systems
C) Intrusion detectors
D) Motion detectors
Correct Answer:
Verified
Q1: _ detectors use beams of light to
Q3: List various methods of detecting fires.
Q4: How do intrusion detectors work?
Q5: _ detectors are used where combustible materials
Q6: _ use CCTV cameras mounted throughout a
Q7: Describe electronic security systems.
Q8: The core missions of a _ system
Q9: What topics are listed in CSI MasterFormat™
Q10: What types of systems can be monitored
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