Features:

• Built in purification room to purify impurities and leave only alcohol: to avoid bacterial growth in the blowing tube, not in contact with blowing, more accurate detection, and healthier measurement.
• Clear and easy to read high-definition color screen.
• Detection indicator: Three color indicator light, clear at a glance.
• Intoxication alarm voice reminder.
• Rechargeable lithium battery with long-lasting battery life.

Operation process:

1. In order to obtain accurate test results. Test after drinking for 20 minutes.
2. Preheating mode: Press the button for 1 second to turn on, backlight, and display Light-up at the same time, displaying all contents, and "drop" one. The sound prompts them to turn on the machine and immediately enter the standby preparation mode. 10 second countdown from 10:00 to 00:00.
3. Blowing mode: After a 10 second countdown in preheating mode, it will immediately enter the 10 second blowing mode, and the blowing port will be protected. Maintain a distance of 2-3 centimeters with moderate pressure. Evenly exhale for 3-5 seconds.
4. The results indicate that a 10 second test result is displayed on the display screen of the tester.
5. Auto close: After displaying the results for 10 seconds, it will automatically close. Intelligent power saving.