we are offering Alcohol Tester etc.tester.specificationsensor: highly selective oxide semi conductor sensorsize: 120mm*60mm*25mm weight: 200gmhousing: shock resistance molded plasticresponse time 3 sec warm up time: 20secrecovery time (sensor purge) :30secbattery 9v alkalineexternal power supply 12v dc adapteraccuracy +-0.01% at 0.10%bac/+-0.05mg/l at 0.50mg/lbracdetection range: 0.00-0.40% bac0.00-2.00mg/l braccalibration: bac simulator(model 34c/gyth laboratory/usa)digital display: three digits in numerical readoutce, dot.