Product Features:
1， professional airway design， advanced nano-semiconductor alcohol sensor
2， the precise measurement results， three alcohol measurement unit conversion (% BAC / ‰ BAC / mg / L)
3， blue backlight LCD digital display the results
4， rapid response and recovery
5， automatic shutdown
6， alcohol alarm sound overrun
7， sensor failure self-test
8， low power tips
9， the mouthpiece can be replaced， delivery 5 mouthpiece

Technical Parameters:
Sensor: Semiconductor alcohol sensor
Warm-up time: within 10 seconds
Response time: within 5 seconds
Working environment: 5 ~ 40 degrees Celsius
Test range: 0.000-0.199% BAC & 0.00-1.99 ‰ BAC & 0.00-0.99 mg / L
Power: Three 1.5V AAA alkaline batteries
Product size: 112 × 61 × 29mm