Unverified85% confidenceCautionTime unknown
CO（一氧化碳）报警对使用燃气热水器/取暖且宠物长期独处的家庭为刚需，应选带独立CO电化学传感器且报警阈值可调（一级50ppm、二级100ppm）的机型，纯甲醛VOC仪不具备CO防护意义
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