Non-Contact High-Precision Alcohol Tester With Digital LCD Screen Rechargeable Breath Alcohol Tester Breathalyzer Analyzer Sensor type: Semiconductor type sensor Display: LCD liquid crystal display (black and white) Shell material: ABS plastic 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 140MAH can be tested 150 times continuously 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 Packing information: Bare metal weight: 20.5g Packaging weight: 49.2g/color box (host, charging cable, manual) Packing size: 100*78*22mm