* As the most advanced MEMS gas sensor was mounted in this product
and re-calibration function was equipped, measuring accuracy is high.
Features:
* Semiconductor sensor inside
* Warm-up time: within 10 seconds
* Response time: within 5 seconds
* Operation temperature: 5-40 centigrade
* Convenient to carry by keychain
* Countdown and count-up timer keeps the deadline of your parking
* 3 test steps with LED indication
* Test result:
Safety: under 0.02% BAC
Caution: 0.02% - 0.05% BAC
Danger: over 0.05% BAC
* Battery: 2 x AAA alkaline batteries (not included)
* Clock: uses 1 x AG13 battery (included)
* Size: 76 x 35 x 22mm