[LCD DISPLAY & AUDIO ALARM] The built in LCD display and audio alarm function provide clear and immediate feedback on your BAC levels. Featuring a sensitive semiconductor sensor, it detects intoxication levels with increments of 0.01 mg/L and alerts you when limits are exceeded. The bright blue backlight ensures readability in any lighting condition, enhancing user convenience. [ADVANCED SENSOR TECHNOLOGY] Equipped with cutting edge sensor technology, this alcohol breath tester offers rapid response times and low voltage indication for uninterrupted operation. After each test, it automatically enters sleep mode to conserve battery life while displaying results on the LCD screen for 10 seconds. This feature packed device ensures efficiency and convenience for users on the go. [PORTABLE & USER FRIENDLY DESIGN] Designed for portability and ease of use, this compact alcohol tester is Ideal for carrying in your pocket or bag. Its lightweight construction and ergonomic design ensure comfortable handling, while the included 5 replacement heads and automatic shutdown feature add to its practicality. Get accurate and timely results whenever you need them with this reliable device. [HIGH ACCURACY ALCOHOL DETECTION] This breath alcohol tester delivers precise and reliable results with its high accuracy sensor, helping you determine if you are fit to drive or engage in activities requiring alertness. It quickly detects alcohol concentration in exhaled air and indicates if you exceed the legal limit, ensuring safety and compliance. The advanced technology ensures consistent performance for both personal and professional use. [CUSTOMIZABLE BAC THRESHOLDS] Tailor your testing experience with customizable measurement units and adjustable BAC thresholds to meet your specific needs. Whether for personal monitoring or professional requirements, this alcohol detector allows you to set precise limits. The intuitive interface makes it easy to switch between units, providing flexibility and control over your alcohol testing process.