Product Features:
1. Professional airway design， advanced nanometer semiconductor alcohol sensor
2， accurate measurements， three alcohol units of measure conversion (% BAC / ‰ BAC / mg / l)
3， blue backlit LCD digital display results
4， rapid response and recovery
5， automatic shutdown
6， automatic overrun alcohol sound alarm
7， sensor fault detection
8， low power tips
9， the mouthpiece can be replaced， distribution 5 Mouthpiece

Sensor: Semiconductor alcohol sensor
Warm-up time: 10 seconds or less
Response time: 5 seconds or less
Test range: 0.000-0.199% BAC & 0.00-1.99 ‰ BAC & 0.00-0.99 mg / l
Power supply: 3 1.5V "AAA" alkaline batteries