The Risco LightSYS Air Curtain Sensors provide discreet yet highly effective perimeter protection for doors, windows, and large openings. Using advanced narrow-beam detection, they create an invisible “curtain” that triggers the alarm if movement is detected across the protected area. Fully compatible with the LightSYS Air wireless system, these sensors are ideal for securing vulnerable entry points while allowing freedom of movement inside the property. Compact, reliable, and easy to install, curtain sensors add an extra layer of security by detecting intrusions before an intruder gains access.