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 0.05% BAC(Blood Alcohol Concentration) or 0.25mg/L BRAC
Notice: Please make sure to keep holding the "POWER" button during test

Timer function:
Two timing modes: Count-up, Count-down
To count-up timing: press the "START/STOP" button to start, repress the button to stop.
To count-down timing: press the HR and MIN to set limiting hours and minutes in advance. Press the "START/STOP" button to
start, repress the button to stop. It can preset time between 1min to 19hrs 59mins.
To reset timing: press the HR and MIN simultaneously.

Torch function:
Slide the "ON/OFF" forward, then the LED lighting up with orange light