HQ AT20 Manual De Uso página 3

How to use the alcohol tester
Warm up
1. Press and hold the power button for 1 second, the LCD display will turn on with
one beep sound.
2. The @ready@ symbol will fl ash for 15-20 seconds that indicate
the tester is in warm-up mode.
DISPLAY ALCOHOL BREATH TESTER
Note:
* If warm-up is defeated, the tester will be turned off automatically, you can repress
the power button and try again.
* It always has a large number of gas & impurity absorbed on the surface of the
alcohol sensor, when taking the tester out of the package for the fi rst time, or if it
hasn't been in use for a long while, you need to clean and warm the sensor up.
Test alcohol concentration
1. When warm-up is succeed, the Test... symbol will be displayed that indicate the
tester is in testing mode.
2. Blow into the breath pipe for 3-5 seconds continuous.
3. The test result is viewable on the LCD display.
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