Visual Alarm Device (VAD)
AutroGuard Multicriteria Protector Series V-430, V-530, V-100, V110 and V-120,
AutroGuard-Technical-Handbook, Doc-1004339-4, 2022-12-09,
Autronica Fire and Security AS
Page 38
6. Visual Alarm Device (VAD)
6.1 Compliance with EN54-23
The Visual Alarm Device (VAD) is compliant with EN54-23.
EN54-23 specifies the requirements and performance criteria for
visual alarm devices (VAD). It specifies the range at which the
required illumination is met (Coverage Volume). The required
illumination is 0.4 lux or 0.4lm/m2, which is the minimum level of
light likely to attract attention.
Several variants (with the code VADR and VADW) of the AutroGuard®
Multicriteria Protector are provided with an integrated VAD
compliant with EN54-23.
6.2 Coverage Volume
To meet the required illumination and ensure that all relevant areas
at the premises are covered by VADs, the Coverage Volume of a VAD
must be taken into consideration.
Note that, in addition to EN54-23, national/local
standards/requirements may apply.
A
t a given mounting height, the Coverage Volume of a VAD is defined
by the diameter of the coverage, given in metres.
With reference to EN54-23, the following categories apply to the
coverage volume for the AutroGuard® protector’s VAD:
• C, ceiling mounted devices
• O, open class devices
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