The FC10 Portable Breath Alcohol Tester is the true workhorse of breathalyzers. Widely used by Law Enforcement and Corrections the FC10 combines high precision, ease of use and ruggedness with affordability. The Lifeloc FC10 includes direct BAC testing and passive alcohol screening in one instrument. Passive testing does not require a mouthpiece and is perfect for rapid "zero tolerance" alcohol screening of subjects and "sniffing" of open containers. Known for its long life and fast recovery times, the FC10 is likely the only breath alcohol tester you will ever need..