I just want to tell you because you turned the comments off when you were doing the bactrack keychain breath analyzer versus the expensive ones that you were doing something wrong. You should really leave comments on there so people can learn and give you information.. In the directions you're not supposed to test one after the other. You're supposed to wait 15 or 20 minutes after you drink alcohol. And then wait 15 or 20 minutes after the test is done before you do it again. You were getting inconsistent reading because you weren't waiting the 15 or 20 minutes of course it's going to read higher and higher. Police officers held a party invited people that was a controlled environment to drink and test the cheap breathalyzers with the expensive police models.. THEY FOUND THAT THE SMALL BACTRACK KEYCHAIN BREATHALYZERS WERE SHOCKINGLY AS ACCURATE AS THE EXPENSIVE ONES!! That's if you follow the directions and do it the right way. So I think you should have done the test over again waiting 20 minutes in between each test.. you would probably get different results. Not to mention when someone blows into a breathalyzer whether it's a machine or a person that whole process is never going to be the same every single time. It'll always be slightly different even if it was .1 ;)

I couldn't understand anything he said! ;-)

ghh

Mine never worked right. Completely unreliable readings. Don't waste your money.

The sensor module should be changed every 200 tests or at least once a year (which ever comes first). The AlcoMate Premium and Prestige will notify the user when a sensor should be replaced. Continued use of a worn out sensor will result in increasingly inaccurate results.

how long does the sensor last?