3M 888480, Quick Start Manual, Page: 5 / 28

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Eartips
Insert eartips in a forward direction.
Volume
Use the (+) and (-) buttons to adjust volume.
There are 7 volume steps.
Turn On and Off
When the CORE stethoscope is off, it functions
as an unamplified stethoscope.
To turn the CORE stethoscope on, press the
power toggle in. The light will begin flashing.
You will now hear amplified and filtered sound in
the eartips.