The new SL-650QDM Quad photobeam from Optex includes even more features to protect against false and missed alarms caused by misalignment and environmental issues. With 650 feet of outdoor detection range and 4-channel beam frequency selection, the QDM model is perfect for long-range, high-security perimeter detection applications. When used with the new BAU-4 Automatic Beam Alignment Unit, the optical access is automatically and accurately adjusted for optimal alignment. This allows peak performance and gives one technician the ability to quickly align the 650-ft. SL detector without additional help. For full list of new features, visit www.optexamerica.com.
