Pulse oximeters can help you monitor the oxygen saturation of hemoglobin in the arterial blood non-invasively. Measuring oxygen saturation is as important as measuring pulse rate hence pulse oximeters are valuable pieces of equipment that can help decide oxygen flow. It works on the principle of photodetection, pulse oximeters emit infrared rays to detect the oxygen saturation in blood. It's a crucial tool in monitoring respiratory health, and its awareness can highly contribute to better health management, especially for individuals with chronic respiratory conditions or those in critical care.