Unverified90% confidenceFactTime unknown
CO2浓度的健康分界线：＜1000ppm为舒适、1000-2000ppm开始出现困倦注意力下降、＞2000ppm明显头昏。因此声光报警阈值可设的产品比固定阈值更实用，卧室建议设1000ppm报警。
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