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Oximeter: Frozen Bluetooth® icon on the display

If you have an oximeter with a frozen Bluetooth® icon like is shown in the picture below it is not possible to pair it with a Nox T3 device. 



  • In order to turn on the oximeter again, hold down the grey activation button for at least 3 seconds and you will notice the device turn on: 


In order to avoid this state where the oximeter won't allow a Bluetooth connection to occur, make sure that when you turn on the device that you hold down the grey activation button for at least 3 seconds.

Note: Oximeter units with serial numbers 501924607 and larger do not run the risk of entering this Bluetooth icon freezing state.

If this issue happens repeatedly please contact for investigation of potential device failure.



*Please note that not all features or all products are available in all markets. Our products are medical devices and subject to registration/approval in each market area. For more information on product availability please contact

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