Unverified85% confidenceDecision RuleTime unknown
报警声量选100dB以上才能在户外空旷环境有效震慑和唤醒，室内型80dB的报警器在旷野中衰减严重，10米外几乎听不清
1
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85%
Confidence
Long-term
Relevance
-
First Seen
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Unverified纯声光报警器（无联网功能）声压需≥120dB才能在户外或有效吸引50米内注意，低于100dB在嘈杂环境几乎无效83% similarUnverified独立本地报警器（仅蜂鸣无联网）报警音量应≥100dB才能有效震慑入侵者并唤醒室内人员；低于85dB的产品实际隔一道门几乎听不到83% similarUnverified本地独立蜂鸣型报警音量应≥100dB（1米处）才能起到威慑驱离作用，85dB以下仅相当于提醒，无法惊吓入侵者83% similarUnverified105dB声量在开阔户外环境中传播衰减快，实际有效警示范围有限，适合帐篷近距离唤醒使用者，不适合作为大范围营地防护78% similar
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