Related Clues:

• Foghorn, e.g.
• Car buyer's option
• Bedside noise
• Bank feature
• Sound a Klaxon
• Common cell phone feature
• Loud get-up?
• Reason to get up in the morning?
• Break-in indicator
• Surprise big-time
• Rousing ringer
• Security device
• Car antitheft device
• Clock signal
• Home security component