Features: 1. Digital LCD display 2. Breath alcohol tester with audible alert 3. Mesure unit conversion : %BAC and mg/I BRAC 4. Quick response and resume 5. Auto power off 6. Low battery indicate 7. Error indicate 8. Use 2*AAA alkaline batteries(Not Included) Specifications:Sensor:advanced semiconductor oxide alcohol sensorRange:0.000%-0.199% BAC (0.000-0.995mg/l BRAC)Test accuracy:0.005% BAC( or 0.025mg/l BRAC)Operating time: warm up:10-15Ss，response:<5sDimension:116x45x15mmEnvironmental temperature:10C-40CEnvironmental humidity:40%-90% Package content: 1 x Digital Alcohol Tester