Detection range: 0.000 to 0.199% BAC, 0.00 to 1.99 BAC and 0.00to 0.99mg/L Power input: 3V (3 x "AAA" alkaline battery, not included) Operating temperature range: 5 to 40掳C Sensor: advanced flat surfaced alcohol Warm-up time: within 10 seconds Respond time: within 5 seconds Digital display results (%BAC/BAC/mg/L) Quick response and resume Auto power-off Mouthpiece: 5 pieces Sensor fault self checking Blue-colored backlight Low voltage indicator Unit size: 112x61x29mm