Jeona Alcohol Detector as Defined by the National Public Safety Commission ★ High-Precision, High-Sensitivity MEMS Semiconductor Sensor: Utilizes a MEMS nano-gas semiconductor sensor, considered one of the most promising technologies of the 21st century, resulting in faster and more efficient measurements! Compared to electrochemical methods, the shorter measurement time significantly improves operational management efficiency! Measurement range: 0.01-0.50mg/L (BrAC) It also operates normally in environments from -20°C to 60°C, ensuring accurate measurements regardless of the weather! ★ Long Lifespan: Measures with a precision of 0.01mg/L, with a lifespan of 3 years or 2800 uses, offering excellent cost performance! The average number of uses for commercially available alcohol testers is 500-1000 times. ★ Non-Contact, Suitable for Multiple Users: Unlike disposable mouthpiece designs, the non-contact design eliminates the need to touch the alcohol tester. This is more hygienic and very easy to use. The measurement results are professional-grade, with accuracy comparable to alcohol checkers used by the police. Because it's non-contact, it can be used by multiple people! ★ LED Display & Warning Sound: The high-precision alcohol checker makes data easy to read. It uses an LED display, making the displayed values easy to see even at night. Indicator lights make it easy to understand the test results at a glance. Red and yellow lights indicate alcohol consumption, while green indicates no alcohol and safety. ★ Compact: The alcohol tester weighs only 45 grams. It's perfect for various situations, such as before driving, the morning after a drinking party, birthdays, and New Year's celebrations. You can check before driving to know if you are able to drive. ⚠︎ Please check the product and box condition in the photos. ⚠︎ In case of any defects, please contact us via transaction message *before* leaving a rating. ⚠︎ We cannot offer refunds or other support after a rating has been given, so please check upon arrival. Management Number: M-53