The AlcoHAWK+ PT500 is the newest, cutting edge, breakthrough unit in Q3's handheld AlcoHAWK Series line of breath alcohol testers.It incorporates our PT Core+ fuel-cell sensor, which is not subject to interference from acetone and offers enhanced linear accuracy over traditional semi-conductor sensors.The simple menu-driven operation allows you to quickly and accurately screen for the presence of alcohol up to 0.400% BAC.The AlcoHAWK PT500 also features a large, easy-to-read back-lit LCD display.The AlcoHAWK PT500 is the ideal unit for law enforcement roadside screening, corrections, probation officers, substance abuse clinics, boating, military, and many other areas of professional testing in which fuel-cell accuracy and reliability is required.