2. 1. Pick up your keychain breathalyzer.First lift the
top black mouth piece on the top of your breathalyzer. Now the breathalyzer
mouth piece should be standing straight up.
3. 2. Turn the breathalyzer towards the right and
look for grey square button. Now press the grey square
button on the right bottom side of breathalyzer and wait for the noise to
begin.
4. 3. A 12 should appear on the screen after the noise is
activated. The breathalyzer will then begins a count down on the
screen towards zero. Once the number gets to 3 you then will begin
to blow into the black mouth piece at the top.
5. 4. You keep blowing into the device until you hear a
beep. After the beep, remove the breathalyzer from your mouth and
your BAC will appear on the screen.