Breathalyzer for measuring alcohol content, portable, LED display, professional BAC breathalyzer, high precision for police, for breathalyser Description: Product name: alcohol semiconductor sensor Detection range: 0.00 PAR0.19% BAC (0.0-1.9G/L) Accuracy: 0.01% BAC (0.1G/L) Input voltage: 2 no. 7 alkaline batteries (excluding batteries) Operating environment: 5.40 Color: White Product Size: 10x3.6x1.8CM delivery quantity; 1x alcohol tester High Precision BreathalyzerProfessional breathalyser use advanced semiconductor sensors, quickly provide result to judge whether you can drive or not . Recognition Range 0.00-0.19% BAC (0.0-1.9g/L), fast recognition results, fast recovery. Bring comfort to the life of everything, increase the sense of joy and happiness is our driving force. Easy to useJust hold the power button for 3-5 seconds to start the professional breath tester, wait 15 seconds to warm up and use the tester to blow for 5-6 seconds. The result is displayed on the LCD screen for 15 seconds (2 AAA batteries required - not included). Health and Hygiene This breathalyzer does not require contact with the mouth, just blow directly. No blower tube is required, reducing direct contact and making the test more hygienic.