1. This product is a mobile phone OTG plug-in power supply alcohol tester

2. Unplug the side charging head and insert the mobile phone charging interface for power supply. (Some brands of mobile phones do not automatically recognize OTG power supply, so manually turn on the mobile phone settings)

3. Power on: long press the power button for 1 second, the device is turned on, the display screen is fully displayed, and the "drop" prompt is turned on.

4. Warm-up stage: After booting, the device enters the warm-up state, and the display shows a 10-second countdown of "Warm up".

5. Test stage: After the warm-up is over, the device enters the test state, "drop" a prompt, showing "Blow" and 10 seconds countdown, at this time you can carry out a blow test, when the equipment detects that the gas containing alcohol blows in, the countdown will jump to 4 seconds to start the countdown.

6. Result: The test result is in %BAC as the concentration unit, when the test result is less than 0.02 %BAC, the prompt of "drop" sounds, and the indicator does not light up. When the test result is greater than or equal to 0.02 %BAC and less than 0.08 % BAC, the prompt prompts a slow sound "DiDiDi" prompt, and the indicator light is red. When the test result is greater than or equal to 0.08 % BAC, the prompt prompts a quick "tick" prompt and the indicator lights red. The result shows automatic shutdown after 12 seconds.

7. Power off: long press the power button for 1 second, the device enters the shutdown state; After the test result shows that after the time is over, the device automatically enters the shutdown state, and the display shows that "0FF" flashes twice and "Didi" twice prompts shutdown.