Fire detection and fire alarm systems - Components of voice alarm systems. LoudspeakersBS 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

insulation resistance and electric strength

Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 97/23/EC

material selection

environmental issues

Contents of BS EN ISO 13337:

general principles for design

which are suitable for preloading

BS EN 12020-2:2008 supersedes BS EN 12020-2:2001

licking or swallowing

The requirements that define different levels of standard technical requirements for PSL-2 and PSL-3 are in Annex G

Who is BS EN 12150-2 - Thermally toughened soda lime silicate safety glass for

but also in the social environment