CLC/BTTF 133-1 - Sound systems for emergency purposes which are not part of fire detection and alarm systems

CLC/BTTF 157-1 - Public address and general emergency alarm systems

CEN/CLC/JTC 4 - Services for fire safety and security systems

CEN/CLC/WS HECTOS - CEN-CENELEC Workshop on Guidelines on evaluation systems and schemes for physical security products

CEN/CLC/WS ZONeSEC - Interoperability of security systems for the surveillance of widezones

CEN-CENELEC/JTC 4 Services for fire and security systems

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