Digital Pulse Oximeter is a medical device used to measure a person's oxygen saturation level (SpO2) and pulse rate. It works by emitting light through a person's fingertip, which is then measured by a sensor on the other side. The light passing through the skin and blood in the fingertip helps to determine the oxygen saturation level in the blood. Digital Pulse Oximeter is commonly utilized on people with respiratory conditions such as asthma, chronic obstructive pulmonary disease (COPD), and COVID-19 to monitor their oxygen levels. Apart from that, this oximeter is an essential tool for monitoring respiratory health and ensuring prompt medical attention if required.