1、High Accuracy: The breath alcohol tester accurately detects alcohol concentration in exhaled air, helping users determine if they are fit to drive or engage in activities that require alertness. It quickly indicates if the user exceeds the legal alcohol limit. 2、Advanced Sensor Technology: The tester utilizes advanced sensor technology for quick response, and low voltage indication. After testing, it automatically enters sleep mode and displays the test results on the LCD screen for approximately 10 seconds before shutting down. 3、Customizable Measurement Units and Thresholds: Users can easily change the measurement units of this breathing alcohol detector and set their own BAC (Blood Alcohol Concentration) testing thresholds. 4、LCD Display and Audio Alarm: The detector features an LCD display and audio alarm function. Equipped with a sensitive semiconductor sensor, it can easily show the level of intoxication when the content exceeds the preset limit, providing BAC test results in increments of 0.01 mg/L. 5、Portable and User Friendly Design: The alcohol tester is compact and convenient to carry. It is designed with user friendly features that ensure easy operation and provide accurate and timely results.