Electric Air Flow Sensor: The AlcoHAWK Slim contains an electronic airflow sensor to ensure the user continues to blow through the unit. This is a vital new function because only samples of air from the deep lung are proportionate to blood alcohol content. This new innovative sensor ensures the user exhales through the mouthpiece over the 4-5 second exhale. This is an important feature for professional screening to prevent an intentional short exhale which could affect accuracy.

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