Specifications: Product name: Breathing alcohol detector Battery: built-in lithium battery (200 mAH) Charging input: 5V1A Operating voltage: 3.7V Sensor type: semiconductor gas sensor Alcohol concentration measuring range: 0~200 mg/100 ML. Net weight: 23 g Size: 9.3 * 2.5 * 2.4 cm. Indicator lights: red light (imodic conduction), yellow light (imodic conduction), green light (no drink) Features: 1. High-precision detection: with excellent detection technology, it can accurately measure the alcohol content in the exhaled gas of human body, provide a reliable basis for drunk driving judgment, and the error is extremely small, which makes the detection result reliable. 2. Non-contact air blowing: advanced air blowing detection method is adopted, which is sanitary and convenient without direct contact with the tester, effectively avoiding the risk of cross-infection, improving the detection efficiency and making it more widely used. 3. Intuitive three-color indicator warning: it is equipped with three different detection indicators: red light, yellow light and green light, which can show the drinking status at a glance.Red light means drunk driving, yellow light means drunk driving and green light means no drinking, so users and law enforcement officers can judge the results quickly and intuitively without complicated interpretation. 4. Voice transmission function: intimate voice transmission design, automatically and clearly transmits the alcohol content and corresponding drinking status information after the detection is completed.Whether in a noisy environment or for people with poor eyesight, it is convenient and practical to know the test results easily. Package Includes: 1 x Breathalyzer 1 x User Manual