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What is the fire alarm audibility goal for a public operating mode for the sound pressure level (SPL)? Calculator Exit 5 dB or 15 dB
What is the fire alarm audibility goal for a public operating mode for the sound pressure level (SPL)? Calculator Exit 5 dB or 15 dB above ambient 15 dB or 25 dB above ambient C 25 B or 35 dB above ambient There is no minimum
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