Feature: 1. 1. High-precision and digital LCD display: With a sensitive semiconductor sensor, it can accurately display the alcohol content in a few seconds. The breath analyzer can provide very accurate test results and reliably withstand high BAC values. The red background light is easy to read even at night. 2. 2. Automatic alarm and energy-saving mode: ±0.01% BAC high-precision, high-sensitivity electrochemical sensor, which effectively guarantees the stable performance and measurement accuracy of the ventilator. The alcohol tester automatically turns off after the test result is displayed for 10 seconds. 3. 3. Non-contact safety design: It is designed for non-contact safety. No face cover is needed, and blow directly on the ventilator for 3-5 seconds. The alcohol tester can be shared with your friends or family at any time. (Please note that the battery is not included). 4. 4. Portable: The size is 102x34x18mm, and the size is small, which can be easily put in a handbag or pocket, or in a car. 5. 5. Applicable: It is very suitable for you and your family to conduct alcohol tests. Specification: Sensor: semiconductor alcohol sensor Warm-up time: within 10 seconds Response time: within 5 seconds Working environment: 5~40 degrees Celsius Test range: 0.00-0.19%BAC, 0.0-1.9g/L Accuracy: -0.01-+0.02% @ 0.05%BAC Test unit: %BAC, g/ Product Features: 1. LCD backlight: red 2. Response time: within 5 seconds 3. Warm-up time: 15 seconds 4. Blowing time: 10 seconds 5. Power supply: 2 AAA batteries (not included) Package List: Alcohol Tester*1 Note: 1. In order to get accurate results, please do not repeat the next test within 3 minutes. 2. It is recommended to test after 20 minutes of drinking, because this is the approximate time for the alcohol to be absorbed from the digestive organs into the blood. 3. Do not smoke or eat within 20 minutes before the test. 4. Do not clean the tester directly with chemicals 5. Do not blow liquid into the ventilator.