Product DescriptionFrom AmazonSpeed measurement of alcohol concentration in the breath easier!FeatureReduce the initial investment at a low price!Can also check the issue at home, during transportation because I stay and check the middle Handy!Because it is easy replaceable sensor cartridge! No lag during maintenance!I recommend this hotelSmall businessesMany long-distance transport operatorsWho I want to use as a check-like intermediate operators multiplayerWho I want to use as an adjunct to a stationary typeBusinesses that I want to reduce the initial investment