Feature:1. Non Contact Blowing: The alcohol breathalyzer adopts non contact blowing, with fast inspection speed, measuring healthier2. Beep Warning: The alcohol detector has a beep alarm, will sound immediately when the detection data exceeds the safe range, 2 prompt methods indicate different test result3. 3 Color Indicator Light: The indicator light of the alcohol detector shows the test results in 3 colors according to the different alcohol solubility test results, the alcohol results are clear at a glance4. Accurate Value: The alcohol tester is displayed on the LCD high definition screen with accurate values, there are two units, mg/L and %BAC, which are clear, simple and easy to read5. Scientific Filtration: The alcohol detector can exclude other gases and retain alcohol, provides more accurate detectionHow to Use:1. Press the button for 1 second to turn on, the backlit and the display screen will light up at the same time, display all the content and there will be a "beep" sound to prompt.2. The display screen shows "Warm up" and 10 seconds countdown, after the countdown is over, a "beep" will sound, and will enter the next stage.3. The display screen shows "Blow" and 10 seconds countdown, blow to the blowing place for 3‑5 seconds, after the countdown is&nbs