Unverified80% confidenceTradeoffTime unknown
指标越全（甲醛+TVOC+PM2.5+CO₂）的机器单项精度往往越被摊薄成本，若核心诉求是甲醛达标判定，专攻甲醛的单一电化学传感器机型比多合一更可靠
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80%
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Long-term
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Unverified检测指标越全（甲醛/TVOC/PM2.5/CO₂）单价越高但每项精度反而分散，如果核心诉求是甲醛，专测单项的电化学仪比多合一综合仪更可靠93% similarUnverified检测指标越多（甲醛+TVOC+PM2.5+CO2）单价越低往往意味着共用低质传感器，甲醛精度反而被牺牲；若核心诉求是甲醛达标判断，宁选单一甲醛电化学高精度机型92% similarUnverified传感器精度越高、指标越全（甲醛+CO₂+PM2.5+TVOC全测）价格越贵体积越大，若只为新房验收甲醛，选专业单一甲醛仪比全能便携机更准；只为日常看空气，多合一但精度一般即可92% similarUnverified多合一检测仪（甲醛+TVOC+PM2.5+CO2）往往共用低成本传感器，甲醛数据反而不如单一甲醛专用电化学机准确，指标越多不代表越可靠91% similarUnverified检测种类越全（PM/甲醛/CO2/TVOC/温湿度六合一）单项精度反而越受成本妥协，专项治理（如只测甲醛）用单功能高精度设备更可靠90% similar
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