Why is the reading slightly off from other pulse oximeter’s readings?

Modified on Mon, 14 Nov, 2022 at 4:23 PM

Our oximeters are manufactured to international quality standards. If the readings from your PC-66 Handheld Pulse Oximeter are slightly off from other pulse oximeter’s readings, the possible reasons are:


Within 3% difference should be normal. According to international manufacturing standards, SpO2 accuracy is within 3% between 70% to 100%.
Your device is defective and or experiencing some sort of malfunction.
Your sensor or converter cable is defective and or malfunctioning.


Please contact CMI Health, Inc. customer service: 888-985-1125 or [email protected] for specific device or quality concerns.

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