A pulse oximeter shines light through the fingertip to measure how much oxygen your blood is carrying (SpO₂) along with your pulse rate. Clip it on, press the button, and read the result in seconds. For oxygen therapy users: regular readings show whether your current flow setting is keeping your saturation in the range your doctor has set – at rest, during activity and overnight. Keep a simple log to share at check-ups. Tips for accurate readings: warm hands, still finger, no nail polish on the measured finger, and wait a few seconds for the reading to settle. Note: home oximeters are monitoring aids and can be affected by cold fingers, movement and poor circulation. Consistently low readings or feeling unwell means contact your doctor – don’t self-adjust prescribed oxygen without medical guidance.






