Is cheap oximeter good enough if I use it for only heart rate measurement? I don't need it for measuring hemoglobin levels, just for heart rate? Or both HR and hemoglobin level
![Sensors | Free Full-Text | A Comparison of Reflective Photoplethysmography for Detection of Heart Rate, Blood Oxygen Saturation, and Respiration Rate at Various Anatomical Locations Sensors | Free Full-Text | A Comparison of Reflective Photoplethysmography for Detection of Heart Rate, Blood Oxygen Saturation, and Respiration Rate at Various Anatomical Locations](https://www.mdpi.com/sensors/sensors-19-01874/article_deploy/html/images/sensors-19-01874-g001.png)
Sensors | Free Full-Text | A Comparison of Reflective Photoplethysmography for Detection of Heart Rate, Blood Oxygen Saturation, and Respiration Rate at Various Anatomical Locations
![Pulse oximetry-based heart rates, in beats per minute (reference) as a... | Download Scientific Diagram Pulse oximetry-based heart rates, in beats per minute (reference) as a... | Download Scientific Diagram](https://www.researchgate.net/publication/333526246/figure/fig4/AS:764809842814976@1559356284267/Pulse-oximetry-based-heart-rates-in-beats-per-minute-reference-as-a-function-of-time.png)
Pulse oximetry-based heart rates, in beats per minute (reference) as a... | Download Scientific Diagram
![Can we use a pulse oximetry monitor to measure our own blood oxygen and carbon dioxide levels at home, like the ones used by doctors in hospitals? - Quora Can we use a pulse oximetry monitor to measure our own blood oxygen and carbon dioxide levels at home, like the ones used by doctors in hospitals? - Quora](https://qph.cf2.quoracdn.net/main-qimg-f21fdf54be739ed73a5ddad001e2f6e7.webp)