expert

person who, through knowledge or experience, has competence to give an opinion in the fields about which he/she is consulted
[SOURCE: ISO 13302:2003, 3.10, modified — The domain “” has been removed; the NOTE has been removed.]

BS EN ISO 23386:2020

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Jarek Wityk

VADs

Guide to Visual Alarm Devices (VADs) in Fire Safety In

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