Design patented 1 Sensor: Semiconductor alcohol sensor 2 Warm-up time: Within 10 seconds 3 Respond time: Within 5 seconds 4 Operating temperature range: 5 ~ 40 â?? 5 Detection range: 0.00% - 0.19% BAC 6 Digital display results (% BAC, mg/l) 7 Quick response and resume 8 Auto power-off 9 Low voltage indicator 10 Power input: 3V (2 x AAA alkaline battery, not included) 11 Unit size: 84.5 x 40 x 18.5 mm