SA7100-100APO Intelligent Reflective Beam Detector - Auto-AligningSA7100 100APO Intelligent Reflective Beam Detector Auto Aligning The Intelligent Auto Aligning Beam Detectors use the light obscuration principle and sees light produced by the transmitter. Beam detectors are ideal to monitor large open areas and buildings with high ceilings. Key Features: EN 54 12 & EN 54 18 Certified Allows use of 2 detector heads per low level controller Each detector head configurable from 8m to 100m Building Movement and