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BS EN 50849:2017 Expert Commentary
M00000676
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31 March 2017 Expert Commentary on BS EN 50849:2017. Sound systems for emergency purposes
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Audio systems, Telecommunication systems, Speech transmission systems, Public-address systems, Communication equipment, Emergency equipment, Acoustoelectric devices, Priority, Automatic control systems, Electric power systems, Instructions for use, Records (documents), Maintenance, Acoustic measurement, Noise (spurious signals), Performance testing, Installation