You are designing an audible alarm notification system for an office environment with an ambient noise level of 55 dBA. What dBA level should the horn be set at?
Answer(s): E
Given the following values, calculate the focal length of the camera lens.- Distance of the camera to the object is 5 m- Vertical field of view is 2 m- Horizontal field of view 1 m
Answer(s): C
A security program consists of three independent components. They are electronic, architectural, and:
Answer(s): A
The distance a CCTV signal may be run is determined by the strength of the signal at the source, required signal strength at the receiver, and:
You are designing a strobe visual notification system for a fire alarm system. You have a hallway that is 4.6 m (15 ft) wide and 100 m (328 ft) long. How many strobes should be placed in the hallway?
Answer(s): D
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