Guidance on EN54-23

Guidance on the application of primary visual alarm devices and supplementary indicating devices

The requirements of any FD&A system should come from the determinations of a fire risk assessment and the emergency evacuation procedures. In the event of a fire alarm being activated, VADs (Visual Alarm Devices) complying to BS EN54-23 are only required in locations where they are considered to be the primary source of warning to building occupants. In all other areas sounders are considered as the primary source of evacuation and these should comply to BS EN54-3.

If a risk assessment does not identify the need for BS EN 54-23 compliant VADs then, in addition to BS EN54-3 compliant sounders, VIDs (visual indicating devices) can provide useful supplementary indication that may increase the awareness of people to an event.

In line with best practice Notifier recommends that both the audible and visual elements of an alarm device should comply with the relevant BS EN54 standards. Notifier has a range of sounders, VIDs and VADs compliant to BS EN54-3 and BS EN54-23 to meet individual requirements within the building risk assessment.

For further guidance please refer to the recently published FIA document entitled "Guidance on the application of primary visual alarm devices and supplementary indicating devices"

Download from the FIA website

Find out more about the Notifier range of audible and visual alarm devices