Disposable SPO2 sensor is a medical device used to gauge a patient's blood's oxygen saturation levels. It functions by emitting light at two different wavelengths via the skin and measuring the amount of light that is absorbed. It is affixed to the patient's finger, toe, or earlobe. The sensor is single-use only and is thrown after each patient use due to its disposable nature. By doing this, the chance of infection and cross-contamination spreading between patients is decreased. Disposable SpO2 sensor is usually made of plastic and other lightweight materials. It is utilised in hospitals, clinics, and other healthcare settings.