Which statement about coded alarm signal repetition is true?

Which statement about coded alarm signal repetition is true?

• A. It must be repeated zero times
• B. It must be repeated once
• C. It must be repeated at least twice
• D. It must be repeated at least three times

Answer: (D)

The idea here is to ensure the coded alarm is reliably heard and understood. Repeating the coded alarm signal at least three times provides redundancy against mis-hearing, background noise, or distance—giving occupants multiple clear opportunities to notice and recognize the alert. If you repeat fewer times, signals can be missed or misinterpreted, especially in busy or noisy environments or in large buildings. So, the minimum typically required is three repetitions to ensure the message is received and acted upon.

The idea here is to ensure the coded alarm is reliably heard and understood. Repeating the coded alarm signal at least three times provides redundancy against mis-hearing, background noise, or distance—giving occupants multiple clear opportunities to notice and recognize the alert. If you repeat fewer times, signals can be missed or misinterpreted, especially in busy or noisy environments or in large buildings. So, the minimum typically required is three repetitions to ensure the message is received and acted upon.