Inferno Sound barrier is a patented sound generator produces a highly complex spectrum that is extremely disruptive to the human brain. Inferno is a revolutionary technology capable of safely denying access to critical areas. Inferno will cause any intruder additional discomfort. Upon activation an intolerable – but harmless – wall of sound activates, driving the intruder out of the premises. The powerful Sound Barrier projects 125db of ear-piercing sound besides other special frequencies causing a person to immediately modify their behaviour, typically use both hands to cover their ears and leaving the area immediately. It is also very effective because it completely breaks down communications.