
Alarm system sirens emit a loud sound when triggered, scaring away intruders and alerting others of an intrusion.
Alarm system sirens emit a loud sound when triggered, scaring away intruders and alerting others of an intrusion.

Alarm system sirens emit a loud sound when triggered, scaring away intruders and alerting others of an intrusion.
Alarm system sirens emit a loud sound when triggered, scaring away intruders and alerting others of an intrusion.