Low-Cost Laser Security Alarm: Principles and Applications

Learn about the Laser Security Alarm, a cost-effective and reliable system designed for detecting unauthorized entries using optical sensing and advanced electronics. Explore its components, including the laser emitter and control unit, and understand how beam interruptions trigger alerts to enhance security. Discover the advantages, such as high accuracy, energy efficiency, and long-distance reliability, making it suitable for various applications—from safeguarding homes and offices to high-...