[Model] AT6000[Sensor Type] Nano Semiconductor Alcohol Sensor[Working Voltage] DC4.5V (3AAA batteries, not included in the shipping list)[Undervoltage Indication] Vcc3.30V0.10V displays undervoltage; Vcc3.00V0.10V undervoltage shutdown[Working Current] 120mA[Usage Environment] Temperature: -1050 Relative Humidity: 95% No condensation[Test Response Time] 5s[Warm-up Time] 20s[Measurement Range] (0.001.00)mg/L(0.000.20%BAC0.002.00mg/L)[Alarm Concentration] 0.24mg/L(0.05%BAC 0.50g/L)[Accuracy] 10% F.S[Alarm mode] Sound alarm[Display mode] 3-digit LCD with blue backlight and graphic display[Weight] 64g (excluding battery)[Dimensions] lbh, mm: 1036527[Color] BlackInstructions: Press and hold the "POWER" button on the front of the screen for 1-3 seconds to enter the sensor preheating countdown process of about 10 seconds.When you see the word BIOW on the screen, start blowing (blow into the blowing hole for about 3-6 seconds. The test result will be displayed on the LCD during the 5-second reaction period. The device will automatically shut down after about 5 seconds. Put your mouth close to the breath test sensor and exhale into the sensor for 3-6 seconds. The test result can be read on the display.[Tips] After drinking, it is recommended to wait for 20 minutes before testing, because it takes about 20 minutes for alcohol to enter the blood from the digestive organs, and the alcohol remaining in the mouth also takes time to dissipate. To get more accurate results, there should be at least three minutes between each test. Do not use products containing benzene, gasoline and thinner to clean the tester. Do not let any liquid penetrate into the sensor.