Features High Accuracy Monitoring: Utilizes advanced semiconductor sensors for precise blood alcohol content measurements, enabling responsible driving decisions Quick and Simple Operation: Just turn on the device, preheat for 10 seconds, and blow for 3 to 5 seconds for instant results displayed on the LCD screen Comprehensive Measuring Range: Effectively measures alcohol levels from 0.00 to 0.19% BAC, ensuring you stay informed even at higher consumption levels User-Friendly Design: Lightweight and portable, making it easy to carry and use anywhere, ideal for personal or professional use Energy Efficient with Automatic Shutdown: Features a 30-second auto-off function to conserve battery life, ensuring reliable performance when needed Features: 1、HIGH ACCURACY: Alcohol detector uses high accuracy semiconductor alcohol sensors to monitor your blood alcohol content to ensure that you can drive responsibly. 2、NOTE: For more accurate test results, please stop drinking for 20 minutes before using an alcohol tester. The interval between each test should be kept at 2 to 3 minutes. 3、EASY TO USE: Turn on the power button of the alcohol tester, wait for 10 seconds to preheat, and then blow evenly for 3 to 5 seconds. The results will be displayed on the LCD screen for 5 seconds. 4、MEASURING RANGE: Alcohol measurement range is 0.00 to 0.19% BAC and 0.00 to 0.99mg/l, and the alcohol test result reaches the maximum value (0.19% BAC), which will not increase. Even with an increase in alcohol consumption, the test results still showed 0.19% BAC. 5、AUTOMATIC SHUTDOWN: In any state, you can pr and hold the button for 0.5 seconds to directly shut down, or the tester will automatically shut down 30 seconds after displaying the test results. Specification: Item Type: Breath Alcohol Tester Mode: TS 21 Material: PC Charging Voltage: DC 5C Power Supply Battery: Lithium ion battery 140mAh (built in carrying) Test Range: 0.00 to 0.19% BAC and 0.00 to 0.99mg/l Package List: 1 x Breath Alcohol Tester 1 x Charging Cable (Color Random) 1 x Manual Package List 1 x Breath Alcohol Tester 1 x Charging Cable (Color Random) 1 x Manual