07-12-2020, 09:00 PM
Consumer grade medical devices are not known for their precision.
Case-in-point all those $20 pulse-oximeters that have become popular recently...they're around +/-6% accurate...medical-grade versions start around ten times that, IIRC.
Case-in-point all those $20 pulse-oximeters that have become popular recently...they're around +/-6% accurate...medical-grade versions start around ten times that, IIRC.