why this TECHNOLOGY? Minimal floor space required (for the product itself and the virtual detection wall) Limited maintenance Proven solution: reliable and effective See in details See in details Active infrared barriers consist of transmitter cells that emit invisible active infrared light beams and receptor cells that collect and analyse the beams received. This way, active infrared barriers form a virtual wall. When one or more beams are interrupted, the system communicates alarm information. The columns are positioned facing one another and are installed around the perimeter of the site to be protected.