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【Cautions for using electrical products】 When using electrical appliances, please note that the voltage is different from that of Japan, which may cause malfunctions. Since the plug type is Japan type(A or B type), please check the voltage and use a transformer. Please note that a transformer is different from a conversion adapter. We are not responsible for malfunctions caused by use without a transformer. Measuring range: 0.00~0.95 mg/L, digital display, green LCD. Note: To ensure accurate results, please measure with a breath alcohol tester after 20 minutes of drinking alcohol. Smart Alert: If the measurement result exceeds 0.25 mg/L, the alcohol checker will alert you, helping you make the right decisions when drinking. Easy to use: Just insert 2 AA alkaline batteries (not included) and press the POWER button for 2-3 seconds to start the alcohol checker, easy to use. The breathalyzer uses a smart design. If the detection result is 0.250 mg/L, the alcohol breath checker will display Caution on the screen and issue an alarm. If the detection result is 0.380 mg/L, it will display “Danger” and a louder alarm will sound BUY WITHOUT RISK: This alcohol checker has a small volume and light weight, making it convenient to carry. You can check your breath alcohol levels anywhere. If the breathalyzer does not meet your needs, please contact us at any time. The replacement warranty period is 12 months. This alcohol meter adopts semiconductor alcohol sensor technology and has a long service life. Portable breathalyzer can quickly and accurately detect the alcohol concentration in your body within seconds. Based on highly accurate measurements, you can make smarter decisions when drinking. How to use: 1. Just press the power button for 2 seconds to start the alcohol meter 2. Powered by 2 AA alkaline batteries (not included) 3.Measurement range: 0.00~0.95%mg/L 4. If the test result is higher than 0.250 mg/L, the breath alcohol checker will issue a warning sound to the driver. 5.Applicable to drivers and home use Product specifications: Sensor type: semiconductor sensor Display: LCD liquid crystal display Case material: ABS plastic Measurement range: 0.00~0.95%mg/L Measurement unit: mg/L (BrAC) Measurement method: quick check, automatic detection Operating temperature: 0-45℃ Preheating time: 15 seconds Blow time: 3 seconds Response time: less than 5 seconds Packaging weight: 51 g/color box (alcohol checker, specifications) Packaging size: 14*9*2.5 cm Packaging contents: 1x alcohol checker 1 x User manual