A breathalyzer or breathalyzer (a portmanteau of breath and analyzer or analyzer) is a device for estimating blood alcohol content (BAC) from a breath sample. It uses advanced semiconductor alcohol sensing technology to quickly take a breath sample and provide a blood alcohol content (BAC) estimate. The LCD graphic display will indicate how inebriated you are whether it be dangerous (over 0.05 percent bac) unsafe (approx. 0.02 percent bac) or safe (under 0.02 percent bac). Displays caution when result is within 0.02 percent - 0.05 percent displays danger when result equals to or higher than 0.05 percent . Features: High sensitivity semiconductor alcohol sensor. One-key operation automatic shutdown power saving. Digital blue backlit LCD display. Quick response and recovery function. Automatic sound alarm-portable design. Intelligent MCU control. Specifications: Sensor:Advanced semiconductor oxide alcohol sensor Test range: 0.00-019 percent BAC (0.0-1.9g or l) Working temperature: 5 to 45C Accuracy: -0.01 percent and 0.02 percent BAC Alarm threshold: 0.50 percent BAC Power Source: 2 x AAA batteries ( not included ) Response time: 5s Working time: 10s Warm up: 10 seconds Automatic power off: 10 seconds after the result is displayed Tips: In order to obtain a more reliable record it is recommended that you take the test at least 20 minutes after drinking. In addition please wait at least 3 minutes for the next test to start after the previous test. Package Included: 1 x Alcohol Tester 4 x Replaceable nozzles Do dropshipping Yeswe do.If you have any question please contact us. Production Material Safety All products are 100 percent brand new workable and checked carefully before sending out. When is the parcel sent We will send out order within 5 workdays. The delivery time will vary according to different countries and will be affected by weather public holidays and so on. If order doesnt received in declare time please contact us.