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标准指夹式脉搏血氧仪的核心参数：SpO2测量范围70%-100%，分辨率1%，脉率测量范围30-250bpm，采用双波长LED（660nm红光+940nm红外光）光电透射法测量
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Unverified血氧饱和度（SpO2）测量误差应满足在70%~100%区间内±2%以内，脉率误差±2bpm或±2%，这是ISO 80601-2-61的合规基准，低于此标准的产品不建议用于医疗判断76% similarUnverified袜式/脚环式监测仪采用脉搏血氧（SpO2）传感器，同时测心率和血氧饱和度，血氧≥90%为安全阈值，比单纯心率监测更能提前发现呼吸问题76% similarUnverified医用级血氧仪应符合ISO 80601-2-61标准，SpO2精度Arms≤2%（70-100%区间）；家用保健型多为±3%~4%，睡眠呼吸暂停筛查需选Arms≤2%机型74% similarUnverified指夹式血氧仪的SpO2误差在70%-100%区间通常为±2%，但在血氧低于70%时精度显著下降，睡眠呼吸暂停或COPD患者需选择明确标注低值段（<70%）性能验证的机型72% similar
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