Contactless alcohol tester: non-contact blow design, impact detection within 10 mm, which prevents the reproduction of bacteria in the blow tube, quick troubleshooting without contact bubbles and makes the measurement healthier. Auto alarm function: equipped with a three-colour detection display, the test results are clear at a glance, red stands for drunk state, yellow for drinking state, green for non-drinking state. With the sound warning function, a beep sounds to warn you that you are drunk. Digital LED screen: TFT display, simple and easy to read, accurate values, large fonts ensure that you get the values at a glance. USB charging: Built-in large capacity battery, USB rechargeable design, breaks the conventional battery power supply, economical and convenient to use. Hancaner alcohol tester: adopts highly sensitive sensors, built-in cleaning chamber. Impurities are automatically removed. and the alcohols are retained and the detection data is more accurate. This breathalyser has an intellectual design, uses a high-sensitivity chip and intelligent semiconductor sensors for more accurate measurement. Non-contact blow design, high precision, the quality of alcohols is higher and it flows down, so that the impurities are automatically removed and the detection is more accurate. Equipped with a tri-colour detection indicator, the test results are clear at a glance, red stands for drunk, yellow for drinking condition, green for non-drinking state. Specifications: Name: Alcohol Detector Material: ABS Battery: 1 x 3V, 400mA battery (included) Measuring range: 0.000-0.199% BAC Display error: 0.005% BAC Input voltage: 3 V Response time: