Unverified85% confidenceDecision RuleTime unknown
无线报警主机的传感器无线频段优先选用433MHz或Sub-1GHz，穿墙能力和抗干扰性明显优于2.4GHz，别墅或复式户型尤其应避免仅支持2.4GHz的机型
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85%
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Long-term
Relevance
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Unverified无线主机选择433MHz或Sub-1GHz频段的穿墙能力优于2.4GHz，别墅/复式结构建议单主机可接≥32路无线探头并支持中继扩展91% similarUnverified选购前确认无线频段：国内合规民用报警设备多用433MHz或2.4GHz，433MHz穿墙能力强、覆盖广（空旷可达百米），2.4GHz带宽高但穿墙衰减快，别墅多楼层优先选433MHz主机+子设备89% similarUnverified无线探测器优先选433MHz或Zigbee而非私有2.4GHz协议，433穿墙能力强适合大户型多墙体，2.4GHz易被WiFi干扰且穿透差85% similarUnverified无线传感器套装选433MHz/LoRa方案比2.4GHz WiFi穿透力强，隔一堵墙或20米以上距离仍稳定；WiFi直连传感器耗电快且穿墙差，仅适合单个阳台近距离85% similarUnverified无线震动报警器优先选择433MHz或Zigbee而非WiFi直连：WiFi机型功耗高、续航短且断网即失效，433MHz穿墙性能更适合门窗分布式布点84% similar
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