Unverified82% confidenceDecision RuleTime unknown
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
1
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82%
Confidence
Long-term
Relevance
-
First Seen
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Unverified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90% 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84% similarUnverified支持双频WiFi（2.4GHz+5GHz）的随身WiFi输出端，2.4GHz穿墙远但速率低，5GHz速率高但距离近，多设备场景应选双频机型以分流减少信道拥堵81% 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81% similar
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