[KongchangAI]
Unverified88% confidenceDecision RuleTime unknown

CO传感器为电化学型,寿命通常5-7年;可燃气体传感器多为催化燃烧或半导体型,寿命3-5年。多合一探测器整机应有到期自检报警和明确的更换周期标注,无寿命提示的产品不建议购买(会在传感器失效后持续给出'正常'假象)

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88%
Confidence
Long-term
Relevance
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