Related Clues:

• Bells and whistles, say
• They might arouse you
• Smoke detectors, e.g.
• Bells and whistles?
• Sleep disturbers
• Early-warning systems
• Emergency warnings
• Danger signals
• Heist foilers
• Alternatives to The Club
• Emergency notifiers
• Eye-opening things
• Bells and whistles, maybe
• Warning bells
• Security measures