Threshold setting process (Default threshold is 363mg / L for national drunk driving)
1. Press the bottoms more than 8 times (including 8) and then hold for 8 seconds
2. The instrument's voice prompt "Setup Mode" means entering the setup option mode and the displays flashed.
3. Press the bottom less than 2 times (including 0 and 2) within 3 seconds to enter the setting threshold mode.
4. After entering the setting threshold mode for 1 second, you can set the threshold by pressing the key: 218mg / L--503mg / L
5. If there is no operation for 10 seconds, the sensor will exit the setting mode auto. And the voice prompts "Operation Mode".
Set the alcohol state maintenance time flow (Default is 5 seconds)
1. Press the bottoms more than 8 times (including 8) and then hold for 8 seconds
2. The instrument's voice prompt "Setup Mode" means entering the setup option mode and the displays flashed.
3. Press the bottom more than 3 times (including 3) within 3 seconds to enter the alcohol state time mode.
4. One second after entering the alcohol state time mode, it can set the threshold by pressing the key, rang 0-30 seconds
5. If there is no operation for 10 seconds, the sensor will exit the setting mode auto. And the voice prompts "Operation Mode".