SL-650QDM and BAU-4
The SL-650QDM Quad photobeam includes more features to protect against false and missed alarms caused by misalignment and environmental issues. With 650ft. 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 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 650ft SL detector without additional help.