LCD Prefessional Police Digital Breath Alcohol Tester battery the Breathalyzer Dropship Parking Car Detector Gadgets Meter

This is a portable 3 in1 alcohol tester.Inspecting alcoholic thickness by testing user' s exhalation.
It has three key functions: alcohol test, torch function and timer function.
Features:
Threaded by keychain in order to be more convenient carrying
Quick response and resume capacity
Flashlight torch function(Orange light)
Colored LED display alcohol level
Functions:
Alcohol test
Press and keep holding the "POWER" button about 10 seconds, the green LED will be lighted on.
Indicating the tester has entered into testing status.After 10 seconds later, 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.