If you place a ship's siren (often called a "Serena" in some contexts) in a cottage as an alarm against thieves, you will likely create a very loud and attention-grabbing noise when activated. Ship's sirens are designed to emit powerful, penetrating sounds that can carry over long distances, making them effective for alerting people in emergencies, such as signaling for help or warning of danger.
In this scenario, here are a few potential