Portable Breathalyzer,Professional Digital Portable Alcohol Test with LED Display Including 10 Nozzles ProfessionalPortable breathalyzer tester has the features of high sensitivity and high accuracy. Using intelligent sensors, semiconductors and microprocessors, input signals can be converted into accurate results LCD DisplayIt is easy to read even in low light and offers professional accuracy to ensure safe driving. Outside the normal range, the display shows warning and danger symbols and alerts the user with sound signals Easy to UseJust press the power button for 1 second to start the professional alcohol tester, wait for 10 seconds to warm up, and when the warm-up is over, blow normally for 3-5 seconds and the result will be in 3-4 seconds It is ready and displayed on the LCD screen Auto Power OffPowered by two AAA batteries (not included), it automatically turns off after 10 seconds to save energy. It can be tested more than 80 times each time the battery is installed. In addition, low-power instructions are designed to ensure normal use TipTo get more accurate results and avoid errors, it is recommended to repeat the check 2-3 times Specifications Product Name Professional High Precision Alcohol Tester Sensors Advanced Semiconductor Oxide Alcohol Sensors Range: 0.00% -0.19% BAC (0.0-1.9 g/l) Accuracy: -0.01% to 0.02% to 0.05% BAC Warm-up Time: 10 Seconds Response Time: 10 Seconds Operating Temperature Range: -10 ~ 50 Digital Display Results: (% BAC / BAC / mg / L) Power Consumption: 2 x 1.5V AAA Alkaline Batteries (not included) Easy to Use 1. Press and hold the power button for 1 second, the LCD alcohol test screen will turn on with a beep (when it is turned on for the first time or after a long period of inactivity, it takes longer time to warm up the sensor. Power button, if possible , Try a few more times and wait at least 3 minutes to start the next test after the last test). 2. When the warm up mode is properly entered, display Warm up and wait 10 seconds. 3. When warm up is complete, Blow will be displayed and a 10-second countdown will begin, indicating that it is currently in test mode. 4. After taking a deep breath, blow the gas with normal force for 3-5 seconds. 5.Read the test results from the LCD display of the alcohol meter. Suitable for many occasions (family party, holiday, wedding, friends' party, etc.). Proposed 1. After drinking, it is recommended to wait 20 minutes before testing, as it takes about 20 minutes for alcohol to be absorbed from the digestive organs into the bloodstream, and the alcohol remaining in the mouth also needs time to dissipate. 2. For more accurate results, it is recommended to repeat the inspection 2-3 times; do not repeat the next test within 3 minutes of the last test.