The AL9000 alcohol tester analyses the concentration of alcohol in the breath, displaying it in mg/ml (promille). The AL9000 detects the alcohol with a High Tech Fuel Cell sensor. With this sensor, 1000 tests can be performed. After a 1000 tests the device must be sent back for calibration. The scope of the device is 0,0 - 4,0 promille, the device releases a signal when 0,5 or more promille is reached. The results are shown in three decimals. AL9000 is 99,9% reliable and CE and DOT certified. 50 mouth pieces are included.