SPO2 sensors are crucial medical tools used to track a patient's pulse rate and oxygen saturation levels. These tiny, non-invasive sensors are essential in healthcare settings because they offer significant details regarding a patient's breathing condition. In most cases, SPO2 Sensors are affixed to a patient's fingertip, earlobe, or other appropriate body region. They operate by producing light waves that penetrate the patient's blood vessels and skin. Following that, the sensor calculates the quantity of oxygen-bound hemoglobin in the blood, enabling medical personnel to evaluate how well the patient's body is receiving oxygen.