Addressable AS7240 Sounder VAD Bases

Sounders are essential components of fire alarm systems, required for alerting and evacuating building occupants. Visual Alarm Devices (VADs) complement sounders, enhancing fire safety. The P80AVB and P81AVB are addressable sounder bases with VADs, designed for use with MX addressable detectors. The P81AVB offers higher intensity visual indication for broader coverage. Both devices are monitored and controlled from the fire alarm panel, using a two-wire MX digital loop for power and communication, reducing installation costs. AS7240-23 standardizes VAD requirements and ensures consistent performance across Australia.

Main Requirements from AS7240-23 are:
• The coverage volume (i.e. volume within
which required illumination is achieved)
must be stated on the product or
supporting documentation.
• The VAD should meet the requirement for
coverage volume of at least one of the
following categories: W (Wall), C (Ceiling),
O (Open Class).
• Required illumination of 0.4 lux on a
surface perpendicular to the direction of
the light emitted from the VAD.
• Rate of flash should be stated between
0.5Hz & 2Hz.
• The devices must be classifed as Type A,
indoor and Type B, outdoor