- High accuracy: Our alcohol tester ensures precision with regular calibrations and a measurement range of 0.00 to 0.19% BAC. Experience reliable results with the high‑precision sensor technology for your peace of mind. - Safe to use: One-button start function for easy use, with the option to turn it off at any time to ensure the safety of users. - Versatile design: Detect alcohol content for home or work use. With 2 1.5V batteries (not included), this device is multifunctional and meets your requirements while helping protect you, your family and friends. - Work easily: Simple operation. Press a button to read the results on the user-friendly LCD screen. Save time and effort with a quick and easy process. - Use scenarios: After social events at home to check impairment before driving. Workplace safety checks to ensure colleagues are fit for duty. Social gatherings or family events to monitor safety for all attendees.