Installing battery
1.Slide open the battery compartment lid from the back of the unit.
2.Insert two“AAA”
（
UM-4) alkaline batteries with correct polarity as
indicated.
3.Replace the battery compartment lid.
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 time if possible.
Test
