To fix pulse oximeters, the FDA asked this lab to find answers
Pulse Oximeter repair - what's inside! - YouTube
Engineers are working to build better pulse oximeters | MIT Technology Review
Data needed to fix intra-patient variability in pulse-ox accuracy | BioWorld
Pulse oximeters: FDA panel examines evidence that devices may not work as well on dark skin | CNN
Pulse Oximeter Primer
Amazon.com: Pulse oximeter fingertip, Portable blood oxygen saturation monitor for heart rate and SpO2 level, O2 monitor finger for oxygen,Pulse Ox,Oxi Include carrying case,lanyard and batteries, Grey-White : Health & Household
Pulse Oximeter Sensor Repair - Flat Rate of $45.00 - Tri-State Biomedical Services - Medical Equipment Repair and Sales
Lepu Medical Grade FDA Approved Handheld Overnight Pulse Oximeter Fingertip Oximeter Blood Oxygen Meter Finger Oxygen Monitor for Infant Kid Toddler Adult Android iPhone Rechargeable Digital Portable Oximeter SP20 with Wireless Bluetooth
Do I Still Need a Pulse Oximeter at Home to Monitor Covid-19? - The New York Times
How to Fix Your Pulse Oximeter Spring – excel-medical.com