Breathalyzer device is used to detect the level of alcohol abused in the suspected people .breathalyzer is also called as Alco sensor. Alcohol test is carried out randomly in drivers in order to avoid road accidents. Highway accidents and vehicular accidents are one of the hot news in day to day life. Legal limit of alcohol is fixed for drivers if they exceed the limit then are banned from driving and their license will also be cancelled by the federal government. The legal limit of alcohol allowed for driver is about 0.15%.

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