I bought the device actually for France vacations because the carrying of alcohol testers duty was (now canceled). Interestingly it is mainly to test yourself. To make it immediately clear to say: For me applies 0.0 per thousand. The device should not be misused to always drink in or just below the 0.5 or which limit. It does a good job to keep yourself and friends from driving with (remaining) hold parts per thousand. Technically it works flawlessly and the service is without problems. Anyone who wants to complain that the device must be sent regularly to the oaks, just believe me: this is true of every good and reliable meter. And this is one for a top prize. Who compares assessments and tests: there is plenty disabled competitors scrap, which is not worth a single euro.
