Digital Breath Ethanol Tester Breathalyzer Ethanol breath tester Ethanol detector for Keychain Ethanol TesterFeaturesHigh accuracy and sensitive this breath tester is used to measure concentration of the in human body.With sensitive semi-conductor sensor, this portable breathalyzer can quickly give a result to judge whether you can drive or not.Provide you high accuracy test result, accuracy: 0.00 - + 0.19% BAC 0.0-1.9g/Lor 0.00-0.95mg/lBRACSaving power:the tester is power by Universal AAA batteries. It will auto-sleep 10 seconds after test. (Batteries need to be purchased separately)Easy to use: The breathalyzer is extremely easy to use. The back light screen is clear while using the breath tester at night. This breathalyzer tester is space-saving, lightweight, portable, it is easy to hold and carry.[Use instructions]: 1. Press the switch key once, and the LCD display of the tester will light up and give a sound.2. The state warm up number will jump from 10 to 0, and then the state blow 10 will jump to 0 to complete the preheating procedure.3. Put your mouth close to the exhalation test sensor at the beginning of 6 seconds, and exhale into the sensor for 3-5 seconds.4. The display can read the test results.5. When the test results reach the following range, caution and warning will be displayed0.02% BAC(or 0.2g/l) to 0.05% BAC(or 0.5g/l)0.05% BAC(or 0.5g/l) to 0.08% BAC(or 0.8g/l)6. When the test results reach the following range, danger will be displayed.over EQUAL 0.05% BAC (or 0.5g/l)over EQUAL 0.08% BAC (or 0.8g/l)Specifications:Color: WhiteMaterial: ABSAccuracy: 0.01%BAC(0.1g/l)Blowing Time: Within 10 secondsSize: 10x4.5x2cm / 3.9x1.8x0.8inPackage List:1 x Tester1 x Hanging rope1 x Instruction