Vlectro VL-AT Mode D'emploi page 5

4.2 Wait for preheating
After warm-up, will enter into heating mode to active the warming of sensor, countdown
19s (19-00), to make sensor work better and more sensitive.
Countdown interface
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Tips: Alarm level setting
Under self-checking and preheating state, double press button to enter alarm level
setting mode. Short press the button again to select alarm level as b2,b3,b5,b8, after
setted, waiting for 2 seconds, device will enter into test mode automatically.
b2: Means alarm level as 0.20‰BAC(=0.020%BAC or 0.100mg/L)
b3: Means alarm level as 0.30‰BAC(=0.030%BAC or 0.150mg/L)
b5: Means alarm level as 0.50‰BAC(=0.050%BAC or 0.250mg/L)
b8: Means alarm level as 0.80‰BAC(=0.080%BAC or 0.400mg/L)
4.3 Blow test
After 19s of heating, when the "blow" flashes, the instrument can be breath tested by the
mouthpiece. Press the ON/OFF button one time when starting the breath test, the
instrument is officially sampled. "bLo" flashes for about 25 seconds ,Please carry out the
measurement within this period.
Vlectro VL-AT