Model: AM01 Sensor type: semi conductor type sensor Display screen: LCD liquid crystal display () Test range: 0.00-0.19% BAC (0-1.9g/l) Measurement unit: g/l; mg/ml(BAC) Measurement mode: rapid troubleshooting, automatic detection Measurement time: 20 seconds Power supply mode: built-in rechargeable polymer lithium battery Battery used: 3.7V 120MAH Power adapter requirements: DC5V 1A Working temperature: 0-45 Warm-up time: 10 seconds Blowing time: 10 seconds, 4 seconds required Reaction time: less than 5 seconds Working current: 250MA (max) Standby current: less than 20UA Material: Plastic colour: black Package Contents: 1 x Tester Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.