Tesla TSL-HC-A310B, User Manual, Page: 17 / 202

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3.2 Operation
3.2.1 Installing batteries
Place two AAA batteries into the battery
compartment taking care to align the
polarities, then close the cover.
WARNING: Do not attempt to recharge
normal alkaline batteries, as they may
leak and may cause a fire or even
explode.
3.2.2 Turning on and applying the
Tesla Smart Oximeter
Put one of your fingers into the rubber
opening of the Tesla Smart Oximeter
with nail facing upward, then release the
clamp. Press the power button to turn the
Tesla Smart Oximeter on. The oximeter
will automatically turn off, if there is no
finger in the device for more than 16±2
seconds.