This alcohol tester accurately analyse blood alcohol concentration (BAC) levels.
Testing by user`s exhalation.

Features:
Threaded by keychain in order to be more convenient carrying
Quick response and resume capacity
Flashlight function (Orange light)
Colored LED display alcohol level

Functions:

Alcohol test
Long press and keep holding the 'POWER' button untill the green LED lighting on. It means the tester is ready to test.
then exhale pneuma into exhale pipe and look into the result as follows:
IF Green LED keeps lighting: Safety-under 0.02% BAC (Blood Alcohol Concentration) or 0.1mg/ L BRAC
IF Yellow LED keeps lighting: Caution-under 0.02%-0.05% BAC (Blood Alcohol Concentration) or 0.1mg/ L-0.25mg/ L BRAC
IF Red LED keeps lighting: Danger-over 0.05% BAC (Blood Alcohol Concentration) or 0.25mg/ L BRAC
Notice: Please make sure to keep holding the 'POWER' button during test

function:
Slide the 'ON/ OFF' foward, then the LED lighting up with orange light

Power supply: 2pcs 1.5V battery (NOT included)
Dimension: 70*40*18mm
Color: black
gross weight: about 24g