Semiconductor Sensitivity Sensor Electronic Breathalyser Portable Alcohol Tester with 20 Mouthpieces Breathalyzer with LED Display Digital Display <p>【Intelligent Alarm Function】When your test result is equal to or greater than 0.05% BAC (or 0.25 mg/L), the "Danger" symbol will be displayed on the LCD screen with a beep sound. When your test result is less than 0.05% BAC (or 0.25 mg/L), it only displays the "Deposit" symbol without an audible alarm alert. Breathing alcohol tester with backlit LCD display for easy viewing of the test result at night.</p> <p>【One Button for testing】 The breathalyzer is extremely easy to use. Just insert the three AAA batteries, press the power button for 2 seconds to activate the alcohol tester, perform a 15 seconds warm-up, blow into the breath inhaler for 5-10 seconds, the blue backlight LCD screen directly shows the test result. The operation steps will be displayed on the LCD screen of the alcohol tester, just follow the prompt.</p> <p>【3 units of measurement】You can change the unit by pressing a button. There are 3 unit measurements to choose from, % BAC, ‰ BAC, Mg/L, when you have drunk, it is recommended to wait 20 minutes before testing, this is because 20 minutes is approximately alcohol in the blood of the digestive organs. Please wait at least 3 minutes to start the next test. after the last test.</p> <p>【LCD Display Display】Alcohol tester with advanced semiconductor sensor technology, you can get the accurate concentration of alcohol in the blood, and then judge whether it can drive or not. Thanks to the blue LCD display, it is easier to read at night and gives you professional accuracy for safe driving. It will automatically turn off to save energy after completing the test for 20 seconds.</p> <p>【20 Replaceable Buccades】This alcohol tester comes with 20 replaceable mouthpieces which can be cleaned and recycled. The 5 mouthpieces are hidden on the back of the device, just above the battery compartment! Alcohol tester is small enough to stay in your car, purse, backpack or briefcase. Especially we have prepared a portable bag in your car and a perfect gift for your friends.</p>