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How to check the firmware version of the Nonin 3150 oximeter

To check the firmware version on your oximeter: 


  • Turn on the oximeter by pushing the grey activation button in the top left corner (hold it down for approximately 2-3 seconds)

  • As soon as the oximeter turns on, it flashes immediately the firmware version of the oximeter: 



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*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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