What is the chime sequence for an unplanned emergency?

• A. Six Chimes (HI, HI, HI, HI, HI, HI)
• B. Three Chimes (one short, two long)
• C. Five Chimes (HI, LO, HI, LO, HI)
• D. Six Chimes (LO, LO, LO, LO, LO, LO)

Answer: (A)

Audible alerts use pitch and rhythm to signal what’s happening and how urgent it is. For an unplanned emergency, the clear, quickest way to grab attention is six high-pitched chimes in a row. The high tones are naturally more attention-getting, and repeating them six times makes the message unmistakable even in a noisy environment, so responders know immediate action is required. Other patterns or tones are typically reserved for drills, reminders, or less urgent situations, so they wouldn’t convey the same level of urgency. That’s why six high chimes is the best fit for an unplanned emergency.