A pulse oximeter is a medical device for non-invasive measurement of the oxygen saturation level of hemoglobin in the capillaries on which it is measured.
Pulse oximeters are characterized by relatively simple use, which rarely differs depending on the device. The following steps must be taken: Make sure the sensor and LED are clean. If there is dirt, they should be cleaned with alcohol or a soapy solution; Place the sensor on your finger - usually on the index finger, but you can choose another finger (at the user's preference). Make sure that there is no nail polish on the nail and that there are no traces of grease on the finger