The respiratory pulse oximeter supplies are a non-invasive way to measure and monitor a person’s oxygen saturation. The sensor is mostly applied on a thin part of the body, commonly on the index finger. This device sends two wavelengths of light through the body part the sensor holds on to a photodetector which in case measures the changing absorbance of each wavelength through the arterial blood. In this category you will find the best quality of respiratory pulse oximeter products. These items display the percentage of oxygen in the blood, more specifically it measure the hemoglobin, which is the protein that carries oxygen.