Portable Alcohol Tester Blowing Alcohol Detector European And American Conventional 1. Rated voltage: 3V 2. Warm-up time: 10 seconds 3. Response time: within 5 seconds 4. Working environment: 5-40 degrees Celsius 5. Power supply: 2 AAA batteries (not included) 6. Measuring object: drivers and other dangerous workers 7. Measuring range: percent 0.00-percent 0.19 BAC 8. Weight: about 25 g 9. Size: about 10.2 x 3.8 x 1.8 cm Functional features: 1. Digital display of alcohol concentration results with a tone 2. Alarm point can choose the red backlight, with automatic shutdown power-saving function 3. Blowing alcohol tester, a blow that is measured, sensitive and accurate, easy to carry 4. Non-mouth contact, that is, clean and hygienic, compact and portable, portable backup 5. Simple operation, easy to use, 20 minutes after the recommended alcohol test, more accurate Precautions: 1. Take the test at least 20 minutes after drinking alcohol, because it takes about 20 minutes for alcohol to be absorbed from the digestive system into the bloodstream. If you take the test immediately after drinking, the result will only reflect the concentration of alcohol in the mouth at that time, not the concentration of alcohol in the blood 2. For accurate results, wait 20 minutes after drinking before taking the test, and take the test more than 3 minutes after the last test 3. Do not smoke or eat for 20 minutes before the test 4. Do not wipe the product directly with chemicals or corrosive solvents to avoid liquid flowing into the blowpipe 5. If the test is conducted under low battery, there will be some deviation between the test value and the real value 6. It is strictly prohibited to place and use the product in a closed environment with corrosive gases such as paint, pesticide, alcohol or dirty air 7. Unauthorized repair and damage to internal spare parts will lead to product failure