Detailed Product DescriptionFeatures:
1) Design patent
2) semiconductor sensor inside 
3) warm-up time:within 10 seconds
4) response time :within 5 seconds
5) Operation temperature:5-40 ℃
6) 3 test steps with 
LED indication
7) test result:
    Green light:  < 0.02% BAC
    Yellow light: 0.02% ~ 0.05% BAC                 
    Red light:  ≥ 0.05% BAC
 
8) Battery: 2 x AAA alkaline batteries (not included)
9) Size: 102 x 44 x 17.5mm
10) print size: 28x30mm