We are offering Alcohol Tester - (da3000m) etc.SPECIFICATION Indication of B.A.C 0.00 to 40% BAC 0.0 to 4% 0.0 to 2.00mgl Accuracy 0.01%BAC at 0.1%BAC at 25’c Warm up time within 20 seconds Response time within 5 seconds Sensor Advanced semi conductor sensor Display 3 digit display with backlit LCD Power two AAA size alkaline batteries Battery time 200-300 times with fresh batteries Size 34mm*103mm*25mm Weight 57gm Calibrations Every 6 months or 200 times tests.