Get a deep breath, blow hard with cheeks puffed like a squirrel and Make v or b hum.
Cover back hole to make analyze noise quiet.
Stop blowing when you hear the click.
If your breath is cold try to fog the air like you would a glass window to make it fog in through with mouth closed and through nose.
CHECK OUT MY LIFESAFER PLAYLIST FOR MORE EDUCATION ABOUT USING THIS DEVICE.
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