This alcohols tester is intellectualized design, adopts high sensitive chip and intelligent semiconductor sensors for more accurate measurement. Non-contacting blowing design, high precise, the quality of alcohols are higher and it will flow downward, so the impurities are automatically discharged, and the detection is more accurate. Equipped with three-color detection indicator light, the test results are clear at a glance, red represents drunken state, yellow represents drinking state, green represent non-drinking state. Features: Brown semi-transparent craftsmanship housing design, smooth and comfortable hand feeling, easy to carry around with you. High precise design, built-in purification chamber, the impurities are automatically discharged, and the alcohols will retained, and the detection data will more accurate. Intellectualized design, adopts high sensitive sensors, interference resistance design for more accurate measurement. Non-contacting blowing design which avoids the breeding of bacterium in the blowpipe, quick troubleshooting without contact blowing and make the measurement healthier. TFT display, simple and easy to read accurate values, large fonts makes you can get the values at a glance. Equipped with three-color detection indicator light, the test results are clear at a glance, red represents drunken state, yellow represents drinking state, green represent non-drinking state. Built-in large capacity battery, rechargeable design, break the traditional battery power supply, economical and practical to use. With sound warning function, it will make beep sounds to alarm you that you are under drunken state. Wide applications, suitable for family dinner, company annual meeting, construction site, bus fleet, enterprise use. Specifications: Name: Alcohols Detector Material: ABS Battery: 1 * 3V, 400mA battery (included) Measuring range: 0.000-0.199%BAC Indication error: 0.005%BAC Input voltage: 3V Response time: