Nonin Onyx Vantage Fingertip Pulse Oximeter is a device to measure the saturation of blood oxygen using electrical sensor touched at a fingertip. Secondly, Pulse Oximeter makes use of light emitting diodes generating infrared and red lights over the translucent area of the body such as finger tip. Blood vessels and tissues inside your fingertip absorb the light at a constant amount. It absorbs light at specific ration when the heart relaxes, and contract and blood vessels decrease or i...


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