FEATURES
It measures the breath alcohol content in parts per thousand, and percent milligrams / liter.
SERVICE
The operation is very simple. The unit worked on numerous tests without any dropouts. By displaying and the sound gives the signal to blow. Here you should begin immediately with the blow, although a 10 second time will be given. If you start too late, you do not get often the signal that you have blown properly. If you have the but, the blow is over after 3 to 4 seconds. So exhale vigorously.
Important: Before you measure, one should wait 20 minutes after the last sip. Otherwise the mouth alcohol content is considered too strong. I've tried that. True, after 20 minutes the thousandth number was then considerably lower. For a more correct result but can help with water and the rinsing the mouth.
RESULTS
First of all I think one should never use the device for checking the driving ability or, more precisely the permitted driving. Rather it if you still want a drink with a view on whether one has to be enough treat. The instruments of the police are ultimately not legally binding.
In this respect, one can never say with certainty that the measurements with this device have a real relevance. For this you would have to do a blood test to hedge. Say, it measures the breath alcohol which may only contain information on actual alcohol content in the body.
Of course, I have put myself as a conscientious tester an extensive test and so a lot of beer drinking as I liked. Was a beautiful evening. After every second glass I have measured breath alcohol. Amazingly, I had been to 0.4 liters of beer, which is the famous two glasses, an alcohol level of 0.51. Even more amazing is that this fell slightly after further alcohol and later leveled off at 0.5, he therefore, despite still some beer, no longer was higher.
A mid-Ster but had actually anticipated increases, the more he drank. So, one should also interpret the results in doubt so that they can vote or possibly not. That it actually perceives the individual requirements or not.
CONCLUSION
The unit works smoothly. It also provides quite comprehensible results. So it is by no means a juggler product. There is a an indication, reveals a tendency. There is good. I would give it 3.5 stars. Due to the optimal functioning application I choose then 4 instead. 3
