Unverified80% confidenceTradeoffTime unknown
音量越高越有威慑力但也越扰民，且高分贝型号功耗大、备用电池续航短；社区环境120dB反而招投诉，实际威慑90-100dB配强闪光已足够
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Unverified音量越大威慑力越强但扰民风险越高，同时大喇叭意味着更高耗电；租房或公寓楼建议100-105dB并配合手机推送，而非追求130dB的极限音量83% similarUnverified音量越大威慑力越强，但高分贝喇叭功耗大、无线电池款续航短且易招邻里投诉；居民区选择带定时静音或音量分级的型号更实用80% similarUnverified音量越大威慑力越强但功耗和体积同步增加，无线电池款难以长期驱动110dB以上大喇叭，高分贝室外报警器基本都需有线或市电供电79% similarUnverified报警分贝需≥120dB才能在嘈杂街道或人群中有效引起注意并震慑攻击者，低于100dB的产品在户外环境几乎无威慑作用76% similarUnverified降噪幅度越高，语音通透性越差。日常需要听得到叫号、对话、车辆警示时不要盲目追求30dB+，反而增加沟通与安全风险76% similar
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