Alcohol Breathalyzer Tester, Professional Portable Alcohol Breathalyzer Tester, Professional Portable Alcohol Breathalyzer Tester, Professional Portable ? digital breath analyzer? With advanced semi-conductor sensor ensures accurate readout in short time. using alcohol tester for the first time or hasnt been used for a long time, press the power button a few more times to clear the semi-conductor sensor internal excess gas to ensure accurate readings.?High sensitivity? Make alcohol testers turn off automatically to save power when you have completed the test for 5 seconds.Please test after drinking for at least 20 minutes because it takes about 20 minutes for the alcohol to be absorbed from the digestive into the stream. If testing immediately, it can only reflect the alcohol concentration in the oral cavity, not in the .?With backlight LCD display?Make it much easier for the night display and give you professional accuracy for safe driving.?Easy Handling? alyzer just one-button operation, it's easy to turn the device on and test it in seconds.?Portable alcohol breathalyzer? saving, lightweight, completely easy to hold and carry everywhere.For more accurate measurement readings: ? Do NOT or eat within 20 minutes before testing. ? The test time should be after 3 minutes from the last test.