Distributed acoustic sensing systems; distributed acoustic sensing systems comprising fibre optic cable and a distributed acoustic sensor; distributed acoustic sensors; fibre optic cables; vibration sensors; acoustic sensors; pressure sensors; fibre optic apparatus, systems, equipment and installations; fibre optic apparatus, systems, equipment and installations for sensing pressure or vibration; distributed acoustic sensing systems for border and perimeter security monitoring; distributed acoustic sensing systems for monitoring pipelines, cables, buildings and transport infrastructure; fibre optic apparatus, systems, equipment and installations for border and perimeter security monitoring; fibre optic apparatus, systems, equipment and installations for monitoring pipelines, cables, buildings and transport infrastructure; computer software for distributed acoustic sensing systems; computer software for fibre optic apparatus, systems, equipment and installations.;
Installation, monitoring, repair and information services relating to distributed acoustic sensing systems; installation, monitoring, repair and information services relating to vibration sensors, acoustic sensors and pressure sensors; installation, monitoring, repair and information services relating to fibre optic apparatus, systems, equipment and installations; installation, monitoring, repair and information services relating to fibre optic apparatus, systems, equipment and installations for sensing pressure or vibration; installation, monitoring, repair and information services relating to fibre optic cables; installation, monitoring, repair and information services relating to fibre optic cables being pressure or vibration sensitive; advice and consultancy relating to such services.;