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Radar consultants
Computer time sharing services
Computer terminal time sharing services
Block time sharing services
Network system time sharing services
Conversion services, analog to digital
Security card production and personalisation, plastic
Detectors for hidden cameras and microphones
Security systems for banks and jewellery shops
Security systems, dial-up
Security and alarm systems for scaffolding
Video unit security cases, wall mounting
Alarms, door and window, battery operated
Intruder detection systems, perimeter
Intruder detection systems, laser
Intruder detection and progress plotting equipment
Security installations, fully integrated
Home security systems
Offender tagging/monitoring systems and equipment, electronic
Biometric identification systems
Telephone conversation surveillance (tapping) equipment
Control and monitoring systems, security installation
