... System. Safer Alternative to Non-Lethal Weapons. ► Powerful, intelligible communication up to 2000 m; ► Clear, long-range directional communication; ► Creates instant acoustic standoff perimeter; ► Safer alternative to non-lethal means. The SIRIN500RX is designed for integrated applications ranging from maritime vessels to coastal, border and port security solutions. It enables operators to respond to potential threats from safe environments with a fully functional, unmanned perimeter security ...