H10 Finger Oximeter User Manual
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4 Installing Batteries
When the batteries are low, the low battery
indication flashes once per second. Replace
low batteries as soon as possible, following
the instructions below.
1. Hold the device as shown below, press
upward and then pull outward slightly
with your thumb to release the device’s
battery tray.
2. Remove the battery tray and the old
batteries, dispose of the batteries
properly.
3. Insert two 1.5 volt AAA -size alkaline
batteries. Follow the polarity marks (+
and -) as illustrated.
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