Brand N/A Model AD61000 Color White Material ABS Quantity 1 Screen Size 1.0" Backlight Red Detection range 0.00~2.00per mil BAC / 0.00~1.00 Mg/L Warm-up time 30s Respond time 2s Digital display results % BAC Keywords Alcohol Tester Other Features Powered by 2 x AA batteries (not included); Red LED; Buzzer alarm when beyond alcohol concentration; Operation: Press switch for 2s device automatically check and pre-heat for 15s then it become green light and show "BLO" now blow air for check within 10s; Blow air for 5s buzzer will make sound if check alcohol LCD show 003 002 001 and concentration green light flashing if it is 0.00~0.05 red light flashing if it is higher than 0.05; If there is no alcohol BLO flash for 10s and show 0.00; It'd be better to measure after 5~10mins if it already check w/ alcohol; If LCD show ERR it means the device can not check immediately; Yellow light means battery need to be replaced Packing List 1 x Alcohol tester 6 x Mouth nozzles 1 x English user manual