Optical lanterns; signal lanterns; warning lamps [beacons]; warning lights [flashing beacons]; flashing safety lights; flashing lights [luminous signals]; computer hardware for routing audio, video, and digital signals; naval signalling apparatus; safety signals [luminous]; luminous safety beacons; signalling lamps; beacon lights [safety equipment]; luminous beacons for safety or warning purposes; beacons, luminous; strobe lights [warning beacons]; alarm monitoring systems; apparatus for monitoring electrical energy consumption.
Electrical and Scientific ApparatusLighting apparatus installation; lighting apparatus repair; lighting apparatus maintenance; consultancy services relating to maintenance of lighting apparatus.
Building Construction and RepairTechnical consultancy services relating to marine engineering; testing, analysis and monitoring of navigation signals.
Computer and Scientific