How to use the alcohol tester
Warm up
1. Press the power button once, the alcohol tester LCD
will turn on with one beep sound.
2. The ''warm up'' symbol is displayed, and the 10 to 0
countdown is started that indicate the tester is in
warm-up mode.
Note
*If first warm-up is defeated, the tester will be reset
automatically and warm up again
*It