Pulse oximetry is a non-invasive method allowing the monitoring of the oxygenation of a patient's hemoglobin.

A sensor is placed on a thin part of the patient's body, usually a fingertip or earlobe, or in the case of an infant, across a foot. Light of two different wavelengths is passed through the patient to a photodetector. The changing absorbance at each of the wavelengths is measured, allowing determination of the absorbances due to the pulsing arterial blood alone, excluding venous blood, skin, bone, muscle, fat, and (in most cases) fingernail polish. With NIRS it is possible to measure both oxygenated and deoxygenated hemoglobin on a periperhal scale (possible on both brain and muscle).

• Small & lightweight design
• Digital LEDs display
• Display SpO2,PR,Pulse bar
• Low power consumption
• Automatically power off
• Battery-low indicator
• Accommodates widest range of finger sizes from pediatric to adult