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How to use the alcohol tester
Warm up
1.
Press and hold the <POWER> button for 1 second, the alcohol
tester LCD will turn on with one beep sound.
2. The “warm up” symbol is displayed, and the 10 to 00 countdown
is started that indicate the tester is in warm-up mode.
Note:
It always has a large number of gas & impurity adsorbed on the
surface of alcohol tester, when first time taking out the tester from
the packaging, or after long time no using for the tester, it need
more time for cleaning and warm up the sensor, you should
repress the power button and retry several times if possible.
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