It does not work
This is the second time that I am writing this review. Over a one week period, three of us calibrated and then tested the Breathalyser in accordance with the instructions. We can not get the unit to work correctly. Most of the time, after a few alcoholic drinks, the unit registers "0.00". We know this is not true. Our reason in purchasing this Breathalyser was to randomly test employees. The unit is not reliable so we will NOT be using it to test employees. When I did this survey a week ago, your email said you would be sending me an RMA number and I could return this unit for another one.
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