Features: 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 °C

 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

11) patent number ZL 2007 3 0133072.4