ISO 7240-3:2020-ed.2.0

Annotation of standard text ISO 7240-3:2020-ed.2.0 :

Description / Abstract: This document specifies the requirements, test methods and performance criteria for audible alarm devices intended to signal an audible warning, with or without voice messages between a fire detection and fire alarm system and the occupants of a building. This document specifies fire alarm audible alarm devices for two types of application environment, type A for indoor use and type B for outdoor use. This document is not applicable to: a) loudspeaker-type devices primarily intended for emitting emergency voice messages that are generated from an external audio source; b) supervisory audible alarm devices, e.g. within the control and indicating equipment.