Unverified85% confidenceDecision RuleTime unknown
供电方式：市电供电的报警器停电时自身失效，需选内置备用电池或超级电容的型号，保证停电瞬间仍能记录/报警；纯电池款需关注电量低提醒功能，避免电池耗尽后失去保护而不自知
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85%
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Long-term
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Unverified务必选择插电+电池双供电机型，纯插电款停电即断粮，纯电池款没电时不报警最危险；双供电在停电时自动切换并可APP推送提醒87% similarUnverified供电方式权衡：市电插电款报警响亮、可持续供电但断电即失效且需靠近插座；电池款安装灵活但需定期换电池，选购电池款务必确认有低电量提示和至少年更换周期87% similarUnverified使用电池供电独立报警器时，需选带低电量提醒功能的，避免电池耗尽后静默失效造成安全隐患87% similarUnverified必须选双供电（插电+电池备用）机型，纯插电款遇跳闸/拔插头会导致断电停喂，纯电池款出门期间没电风险高。电池仅作停电应急，正常应插电运行87% similarUnverified纯电池供电的感应垫需定期换电，一旦没电则完全失去监护功能且多数无低电报警；用于关键看护应优先选USB/适配器常供电、电池仅作断电备份的型号85% similar
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