Which description best defines an Auto-Distress Alarm?

Which description best defines an Auto-Distress Alarm?

• A. An audible alarm that alternates between 1300 Hz and 2200 Hz and lasts 30-60 seconds
• B. A silent notification to the operations center
• C. A visual beacon that flashes for 5 seconds
• D. A continuous tone at 1000 Hz for 10 seconds

Answer: (A)

An Auto-Distress Alarm is an automatically triggered audible distress signal designed to quickly alert people in an emergency with a distinctive tonal pattern. The description given—an audible alarm that alternates between 1300 Hz and 2200 Hz and lasts 30 to 60 seconds—fits this idea because the alternating frequencies create a highly recognizable cue that clearly stands out from routine alerts, and the longer duration ensures it remains audible long enough for responders to react. This combination makes the alarm effective in noisy environments and helps ensure it is interpreted as an urgent distress signal. By comparison, a silent notification would not wake people or convey urgency; a visual beacon, while helpful in some situations, may be missed or insufficient on its own; and a single continuous tone for a short time lacks the distinctive pattern and duration that signals distress reliably.

An Auto-Distress Alarm is an automatically triggered audible distress signal designed to quickly alert people in an emergency with a distinctive tonal pattern. The description given—an audible alarm that alternates between 1300 Hz and 2200 Hz and lasts 30 to 60 seconds—fits this idea because the alternating frequencies create a highly recognizable cue that clearly stands out from routine alerts, and the longer duration ensures it remains audible long enough for responders to react. This combination makes the alarm effective in noisy environments and helps ensure it is interpreted as an urgent distress signal. By comparison, a silent notification would not wake people or convey urgency; a visual beacon, while helpful in some situations, may be missed or insufficient on its own; and a single continuous tone for a short time lacks the distinctive pattern and duration that signals distress reliably.