Visual Alarm Device (VAD)
Technical Handbook, AutroGuard Multicriteria Protector Series V-430, V-530, V-100, V110 and V-120,
AutroGuard-Technical-Handbook, Doc-1004339, Revision 1, 2020-06-29,
Autronica Fire and Security
Page 37
6.3 Category C
– Ceiling Mounted Devices
x
– The maximum height of either 3, 6 or 9 m at which the VAD may
be mounted
y
– The diameter in metres of the cylindrical volume covered (to a
minimum level of 0.4 lux) when the device is mounted to the ceiling
at a height of 3, 6 or 9 m
Note:
The protected space is within the cylindrical volume and ensures that
all areas meet the required illumination of 0.4 lux.
To convert the coverage diameter y
to the width of a square room:
Width of square room =
y
/ 1.414 m
X
y/1,414
y
