Focenat Breathalyzer with LCD Digital Display,Accuracy

Tips:

1.Before use, please refer to the operation steps in the manual and install the mouthpiece. 2.Avoid testing immediately after drinking. For accurate measurement results, it is recommended to wait 20 minutes after drinking before testing and rinse your mouth with water before use. 3.The product has a 15-second countdown when turned on. During this time, please do not blow air, because this is the self-cleaning preparation time of the instrument. 4.After the 15-second preparation, a 10-second countdown will be displayed. At this time, blow air evenly and continuously for 4-5 seconds without blowing too hard or too weak.