What battery does the pulse oximeter take?

It uses a AAA (×2), 1.5V. Fingertip pulse oximeters run on 2× AAA.

What is a good replacement for the AAA?

Equivalents you can use: LR03, MN2400, AM4, R03, 24A.

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AAA

Battery this device uses · 2× · 1.5V

Fingertip pulse oximeters run on 2× AAA.

Enter a battery code

Type any common code to see its voltage, size and interchangeable equivalents.

💡 Open the battery compartment, note the + / - orientation of the old cells, and replace all of them at once with the same size and type.

What battery does the pulse oximeter take?: It uses a AAA (×2), 1.5V. Fingertip pulse oximeters run on 2× AAA.
What is a good replacement for the AAA?: Equivalents you can use: LR03, MN2400, AM4, R03, 24A.
How do I replace it?: Open the battery compartment, note the + / - orientation of the old cells, and replace all of them at once with the same size and type.