Feature:1. Non Contact Type: The alcohol detector adopts non contact blowing method, for quick detection and healthier measurement.2. Precise Measurement: The non contact breathalyzer uses high sensing chip and precise chemical sensor, provides accurate measurement.3. HD Screen Display: Equipped with TFT high definition screen with backlit function, easy to read the value even in dark light environment.4. ABS Housing: The breath alcohol tester adopts high hardness ABS housing, which is resistant pressure and fall, sturdy and durable.5. Small and Compact: The body design is small and compact, which is easy to carry, and can be tested anytime, anywhere.How 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 over, a "beep" sound will prompt, the test result will be displayed in two units of %BAC and g/L.4. When the test result is less than 0.02% BAC, the green i