Barrier with ToF (Time of Flight) technology. More secure detection regardless of object, material or color, and without false alarms due to environmental conditions. A beam that is projected onto a mirror that reflects on the receiver. The process time is recorded and generated if it is altered. Range outdoors up to 30m and up to 40m indoors. Installable in narrow aisles up to 0.5m wide. Adjustable lens + -90º horizontally and - + 5º vertically.