ISO 7240-21:2005 Preview
Fire detection and alarm systems -- Part 21: Routing equipment
This standard was last reviewed and confirmed in 2017. Therefore this version remains current.
ISO 7240-21:2005 specifies requirements, methods of test, and performance criteria for fire-alarm routing (transmitting) equipment and for fault (trouble) warning routing equipment for use in fire detection and fire alarm systems installed in buildings.
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