Digital Breath Alcohol Tester LCD Display with Mouthpiece is kind of tester designed to measure concentration result of the breathed alcohol in the human body. This device adopts advanced flat surfaced alcohol sensor which has excellent sensitivity and reproducibility， fashional and portable design make it more convenient for personal use. It will bring you more convenient in life!                                    Features            Bit digital alcohol testerBuilt-in mouthpiece， mouthpiece can be replacedOth sides of the products can be installed with mouthpiecesBlue backlit digital LCD screenLight weight stylish design， patented productLow voltage indication and loud alarm soundsSensor failure， automatic calibrationEnergy-saving design， low-power instructionSensor fault self checkingBattery saved design                                                            Specifications            Sensor Type    High-precision semiconductor alcohol sensor    <br>Detection Range    0.000-0.199% BAC; 0.000-1.990%-‰BAC; 0.000-0.990mg/L (BrAC)    <br>Alarm Point    0.050% BAC; 0.500‰BAC; 0.250mg/L (BrAC)    <br>Accuracy    ± 0.010% BAC; ± 0.100‰BAC; ±0.050mg/L    <br>Response Time    !#!lt!*! 5s; warm-up time: !#!lt!*! 20s    <br>Power Supply    2 x "AAA" alkaline battery    <br>Operating Current    ≤120mA    <br>Operating Environment    -10℃~ 50℃    Screen    LCD screen    <br>Three Convertible Units    %BAC， ‰BAC， mg/L    <br>Dimension    2.3" x 1.0" x 4.3" (L x W x H)    <br>                                                            Package Includes            1 x Digital Breath Alcohol Tester LCD Display with Mouthpiece1 x Alcohol Tester Pocket1 x User&acute;s Manual