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Visual Alarm Device ("VAD")

Visual Alarm Device ("VAD")

A Visual Alarm Device ("VAD") is a type of alarm indicating device that is mounted on the façade of a building indicating the location of the designated building entry point. The purpose of a visual fire alarm device is to warn person(s) within, or in the vicinity of, a building of the occurrence of a fire emergency in order to enable such person(s) to take appropriate measures.

When an active alarm condition exists, the visual alarm device is activated the device emits a red flashing light. The flash rate of a VAD is between 0.5 Hz and 2 Hz of between pulses.


In preparing this definition, we have drawn from various sources including Legislation, Codes, Standards and industry information, research and knowledge.  Like the english language, these definitions may subtly change from time to time. As such these definitions are provided solely on the basis that users will be responsible for making their own assessment of the definition and and are advised to verify all relevant representations, statements and information.