AT-6000 model is new and advanced model. It is used to check alcohol consumption in human's body. Specifications: Sensor type:Flat Surfaced alcohol sensor Working Voltage: DC4.5V(3XAAA)Batteries Working Current: <120mA Working Environment: Temperature -10oC~50oC Detection Range: 0.00~1.00mg/L,0.00~0.20%BAC; 0.00~2.00g/L; 0.00~2.00%BAC Alarming Level: 0.24mg/L (0.05%BAC, 0.50g/L; 0.5%BAC) Dimension: 103X65X27mm