Manufacturer Specifications Primary Function: Breathalyzer with LCD screen Analyzing Method: Breath Test Sensor: Advanced semiconductor oxide alcohol sensor Alcohol Reading: Digital Test Range: 0.000 ~ 0.200 BAC (0.000 ~ 1.000 mg/l) Test Accuracy: 0.010 BAC (0.100 mg/l) Visual Display Range: 0.000 ~ 0.100 BAC (0.000 ~ 0.500 mg/l) Warm-up Time: 10 seconds Testing Time: 10 seconds 2 Alert Modes: 0.05-0.10% and 0.10% and over BAC Power Source: 1 x 9V battery (not included) or car adapter (included) Usage Capacity: Over 500 tests on a single 9V battery (Duracell) Working Current: ? 120 mA Operation: 15C - 35C Relative Humidity ?95% Dimension: 118 mm x 68 mm x 29 mm (L x W x D) Weight: 141 grams (including 9V battery) Certification: FCC, CE, RoHS Manufacturer Ref: AMJU0H0Y32IG Product Notes Note: The result of this test gives BAC for reference only. We do not take any legal responsibility for the results given. This breathalyzer can still be used without the mouthpieces, but the mouthpieces assist in the direction of air flow for easier sensing. Comes with blue backlighting for low light conditions Powersaving function Smart MCU control Sensor fault self checking Low voltage battery saving design Package Contents for CVSX-G255 Breath Alcohol Tester User Manual - English Mouthpieces x5 Deluxe edition Breathalyzer Alcohol Tester. Great in-car device. Test your own Blood Alcohol Content (BAC) before the police do it for you! Affordable and highly practical. Never risk doing jail time or losing your drivers license again! At a Glance... Check your own Blood Alcohol Content (BAC) Great car safety device, powered by car adapter (included) Fast and easy to use Stylish and well-built Note: This is a reference tool only and can not be used as a legal defense.