The AlcoScan AL-2500 ELITE is a hand-held, reliable and reusable, digital personal breathalyzer, that displays your %BAC in seconds. The Elite model, complete with a pressure sensor system and flow-meter sensor, allows you to use a mouthpiece for more accurate testing. With an accuracy of +/-0.01%, this compact and easy to use breathalyzer can provide a %BAC reading from 0.00 to 0.40% BAC, and meets DOT requirements. Just blow into the mouthpiece, and your %BAC is displayed in seconds! Know your limit-Don’t drink and drive.