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IEC 60061-1
if you are a manufacturer of aggregates
using information both from the software identification tag and from the software entitlement tag as will be specified in ISO/IEC 19770-3
There may be occasions when cables are required to have higher operating temperature ratings than those provided by using materials specified by the EN 50290 series
thermoplastics linings
Fire detection and fire alarm systems - Components of voice alarm systems. Loudspeakers Ingestion-build-201039 IEC 60061-1BS EN 54 24 specifies requirements, test methods and performance criteria for loudspeakers intended to broadcast a warning of fire between a fire detection and fire alarm system and the occupants of a building. The primary reason for using a voice alarm system instead of the coded warnings given by sounders is to reduce the time taken for those at risk to recognize that an emergency exists, and to give clear instructions on what to do next. This means
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