
3) When you press and hold the button for at least 2
seconds, the OLED starts displaying some button
instructions. You can follow the instructions on the
OLED. By pressing the button for between 2 to 5
seconds, the OLED shows “Release to Zero” which
means if you release the button now, the manometer
will zeros the current readings. If you keep hold the
button for more than 5 seconds, the OLED toggles
from displaying “Release to Zero” to display “Release
to Shut Down”. There are no further button options
after “Release to Shut Down”. At this time, once you
release the button, the device will shut down and the
OLED will be off after shutting down.
4) To turn on the device again, follow Step 1) above.
*Note that if the manometer does not start when you press
and hold the button for more than 3 seconds, you can try to:
open the battery door and check if there are batteries
inside;
if there are batteries, close the battery door again. At
this time, it should automatically start display without
any button press.
If none of the previous try works, try to use 2 new AA
batteries. Follow the “Changing Battery” section.
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