High-Precision, Fast Results Advanced semiconductor alcohol sensor gives a measurement range of 0.00-019% BAC (0.0-1.9 g/L) with accuracy up to ±0.02% BAC (at 0.05% BAC). Fast response — results ready within 5 seconds so you can make timely, informed decisions about driving and safety. Hygienic, Reusable Mouthpieces Includes 12 washable, recyclable mouthpieces to accommodate multiple users while maintaining hygiene. Ultra-compact design for easy storage and transport; carry it in a glovebox, bag, or pocket. Intelligent Alarm for Safer Decisions Built-in audible alarm activates automatically when readings exceed preset limits (examples: 0.05% BAC, 0.50‰, 0.25 mg/L, or 50 mg/100 ml), providing a clear safety prompt not to drive. Simple, reliable reminder to avoid driving or operating machinery when over the limit. Clear, Easy-to-Read Display and Simple Operation LCD screen displays test results clearly and instantly. Switch between %BAC and g/L units to suit your needs. Power with 2 AAA batteries (not included); insert batteries and press the button to start testing. Practical Performance and Usage Notes Portable, professional-grade breath tester for personal or small-group use. Recommended to wait at least 20 minutes after drinking before testing to reduce false positives and improve accuracy. Durable mouthpieces are washable and recyclable for repeated use; the main unit is compact for everyday carry. Use Scenarios Pre-drive check: Test yourself before getting behind the wheel after social drinking or an evening out. Workplace safety: Quick on-site checks for employees who operate vehicles or machinery after breaks or events. Personal monitoring: Track alcohol levels after drinks to manage intake and plan safe travel home. What you get Professional Alcohol Breath Tester with semiconductor sensor 12 washable, recyclable mouthpieces Operates with 2 AAA batteries (batteries not included) Reliable, fast, and easy to use — a compact tool to help you monitor alcohol levels and make safer choices.