Alcohol Tester Alcohol Analyzer Digital LCD Display - Professional air duct design, accurate measurement results. It automatically alarms when the alcohol level is exceeded. Product features: 1. Professional air duct design, accurate measurement results 2. Conversion of three alcohol measurement units (﹪BAC / ‰BAC / mg/L) 3. Blue backlit digital LCD display for results 4. Quick response and fast recovery 5. Automatic shutdown 6. It automatically alarms when the alcohol level is exceeded 7. Sensor fault self-test 8. Low battery indication 9. The mouthpiece can be replaced, comes with 5 mouthpieces Technical parameters: Sensor: Advanced nanometer semiconductor alcohol sensor Warm-up time: 15s Response time: 5 Measurement range: 0.000-0.199% BAC, 0.00-1.99‰ BAC, 0.000-0.995 mg/L Accuracy: ±-0.010% BAC, ±0.100‰ BAC, ±0.050mg/L Alarm concentration: 0.05% BAC, 0.5‰ BAC, 0.25 mg/L Power supply: 3 x 1.5V AAA alkaline batteries (not included) Operating current: ≤120mA Operating temperature: -10°C~ 50°C Product size: 112 x 60 x 28 mm Color: black 1 x alcohol tester 5 x mouthpieces (placed in the product's back cover)