[KongchangAI]
Unverified85% confidenceDecision RuleTime unknown

光电式烟感对阴燃火(棉被、电线阴燃)响应快,离子式对明火响应快但已因放射源逐步淘汰;家用优先选光电式,NIST/UL标准建议烟雾遮光率报警阈值在1.5%-4%/ft之间可平衡灵敏度与误报

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