Powered by BACtrack's largest Xtend Platinum Fuel Cell Sensor, the BACtrack S80 Professional Breathalyzer is the most accurate breathalyzer in the BACtrack family, delivering reliable BAC results, with police-grade accuracy. From being used as an alcohol detector for employees in businesses, to acting as an alcohol tester for patients in clinics or treatment centers, the S80 is perfect for a variety of professional alcohol sensing, detecting and testing applications. And because of its reliability and portable design, it's also great as a personal BAC breathalyzer. Help friends and family make better decisions while drinking with the accurate and affordable BACtrack S80 alcohol breathalyzer. #1 RATED BREATHALYZER BY WIRECUTTER - "After 65 hours of research, which included getting intoxicated at a police station to test personal breathalyzers alongside law enforcement equipment, we're sure the BACtrack S80 is the most accurate, reliable, and easiest-to-use personal breathalyzer that you can buy." - TheWirecutter, February 2017 POLICE-GRADE ACCURACY - Powered by BACtrack's platinum-based Xtend Fuel Cell Sensor, the S80 utilizes the same police-grade technology trusted by hospitals, clinics, and even law enforcement. These professional organizations trust BACtrack breath alcohol testers because they know they are getting the most accurate and reliable BAC results possible, every time they test. The S80 can detect trace amounts of alcohol, reliably handles high BAC levels and is accurate to the third decimal place. SIMPLE, ONE-BUTTON OPERATION - The BACtrack S80 is extremely easy to use. Simply insert the two included AA batteries, power on your breathalyzer and begin testing. It's that easy. Your BAC results are displayed 10 seconds later on a bright, easy to read LCD screen. Should you want more control, you are able to easily change units of measurements and set user-defined BAC thresholds for testing. DOT/NHTSA APPROVED & FDA 510(k) CLEARED - The BACtrack S80 was designed to meet the rigorous standards of expert alcohol screeners, from roadside law enforcement to hospital and treatment professionals. Designated by the U. s. Dept. of Transportation & National Highway Traffic Safety Administration as an approved breath alcohol screening device, the S80 has also been cleared by the FDA for personal use, making it the top choice of safety-conscious individuals as a portable home breathalyzer. 30 DAY MONEY-BACK GUARANTEE & ONE YEAR WARRANTY - BACtrack is the global leader in breathalyzers, providing the most accurate, convenient and affordable breathalyzers on the market, since 2001. We stand by all our products, but if you are unhappy with your BACtrack, you may return it any time during the first 30 days. All BACtracks also come with a full one year warranty, should you have any issues during your first year. Please contact BACtrack's customer service team for more information.