EAFC Automatic Professional Breath LED Display Portable USB Rechargeable Breathalyzer Test Tools

Packing List: 1. Instructions 2.USB charging cable 3 Note: Since the surface of the r will be oxidized when the is not used for a long time, when the is taken out of the package for the first time or the is not used for a long time, the user needs to preheat the product as many times as poible, and then perform the test

How to use the : Preheat: 1: Pre and hold the power on for 1 second, after a beep sound, the LCD screen of the will be activated 2: Preheating" characters appear on the LED display, and the numbers start to count down from 10 to 00. testing method: 1: After "preheating" is completed, enter the "Blowing" state, the display shows the characters of blowing, and the number starts to count down from 10 to 00. 2: Blow air at any time of the countdown, after the hine senses the air, the "beep" will prompt to stop blowing. 3: Read the test results from the display of the . 4: If the concentration result is 0mg/L, the warning light will not light up 4: If the concentration is below the display range of the result, the "safe" characters will appear on the display and the green warning light will be on. concentration>0mg/L BrAC concentration