
To replace the in your MEDISANA Pulse Oximeter PM 150, follow these simple steps: First, find the battery compartment door on the back of the device. Open the compartment door. If there's an old battery, remove it. Insert a new 1.5V AAA battery, making sure the positive (+) and negative (-) ends align with the markings inside the compartment. Finally, close the battery compartment door securely. If the display shows "Por Lo," it's time to replace the battery. If the display is blank, the battery is completely drained, and you should replace it immediately. For additional guidance, consult the instruction manual that came with your MEDISANA Pulse Oximeter PM 150.


