Automatic Alcohol Tester Professional Breath Tester Non-contact LCD Display Portable Rechargeable Breathalyzer Alcohol Detector Test Tools Semiconductor Sensor  Specification:  Product Name: Alcohol Tester  Color: Black, White  Sensor type: Semiconductor type sensor  Display: LCD liquid crystal display  Shell material: ABS+PC  Test range: 0.00-0.19%BAC(0-1.9g/l)  Measurement unit: mg/l (BrAC) mg/ml (BAC)  Measurement mode: quick check, automatic detection  Measurement time: 20 seconds  Power supply mode: built-in rechargeable polymer lithium battery  Using battery: 3.7V 200mAh can be continuously tested for 150 times  Power adapter requirements: DC5V 1A  Working temperature: 0-45℃  Warm-up time: 10 seconds  Blowing time: within 10 seconds, more than 4 seconds required  Response time: less than 5 seconds  Working current: 250MA (max)  Standby current: less than 20UA  Product size: about 99.6*29*15mm/3.92*1.14*0.59 inch    Note:  Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you  Please allow 1-2cm measuring deviation due to manual measurement.                                    1*Alcohol Tester  1*Charging Cable  1*Instruction