KnowYou+ Pulse Oximeter
Check your blood oxygen saturation (SpO₂) and pulse rate quickly and easily with your KnowYou+ Fingertip Pulse Oximeter.
How to use your Pulse Oximeter
Watch our quick guide before taking your first reading.
Taking your reading
Follow these simple steps to help obtain a reliable measurement.
Rest first
Sit comfortably and rest for around 5 minutes before taking your reading.
Prepare your hand
Make sure your hand is warm and relaxed. Remove nail varnish or artificial nails where possible.
Insert your finger
Place your index or middle finger fully into the oximeter, with your nail facing upwards.
Switch it on
Press the power button and keep your hand relaxed and still while the device measures.
Let it settle
Wait several seconds for the figures on the screen to stabilise. Try not to move.
Read your results
Once stable, note the displayed SpO₂ percentage and pulse rate.
Understanding your readings
Blood oxygen saturation
An estimate of the percentage of oxygen carried in your blood.
Pulse rate
The number of times your heart beats per minute.
Perfusion Index
Where displayed, this indicates the strength of the pulse detected at the measurement site.
Getting a good reading
- Sit still and relax before measuring.
- Make sure your fingers are warm.
- Insert your finger fully into the device.
- Keep your hand still while the reading is taken.
- Avoid nail varnish or artificial nails where possible.
- Wait until the displayed figures have stabilised.
- If a reading seems unusual, rest and repeat the measurement.
Care & storage
- Keep your oximeter clean and dry.
- Wipe it carefully after use.
- Do not immerse the device in water or other liquids.
- Store it in a clean, dry location.
- Remove the batteries if it will not be used for an extended period.
Important information
A pulse oximeter is intended as an aid to monitoring and should not be used on its own to diagnose a medical condition.
Readings can be affected by movement, cold hands, poor circulation, nail varnish, artificial nails and other factors.
If you feel unwell or are concerned about your symptoms, seek appropriate medical advice regardless of the reading shown by the device.
Need help with your KnowYou+ oximeter?
We're here to help with using your device. Please refer to the instructions supplied with your oximeter or contact the KnowYou+ team if you need further product support.