By preventing crane-to-crane or crane-to-end-stop collisions, ReFlx® 45 and LaserGuard™2 optimize performance of overhead material handling systems. ReFlx 45, with detection range of 3–45 ft, is suited for single stop event with one contact point. LaserGuard2 uses self-monitoring optical lasers to check crane’s position and offers detection range of 8 in. to 150 ft. System's multi-distance detection feature is flexible enough to manage crane-to-crane and crane-to-wall operation.