Features: Advanced flat surfaced alcohol sensor Quick response SMD assembling, stable performance Direct testing process LCD indication Digital LCD display with blue backlight Portable and fashion design Audible warning beyond preset limit Sensor fault self checking Battery saved design,low voltage indication Digital LCD display Description:Professional Breathalyzer TesterBreath Alcohol Tester safety for driversBreath Alcohol tester needs mouthpieceWarm up within 10 secondsBroad range. Auto warning beyond pre-set limit Works EVERY time Digital Output Power saving design Low battery alert Instructions included 10 mouthpieces included (Mouthpiece not necessary--simply blow into groves for 3-5 seconds)Compact and lightweight design--fits into purse or pocket easily Easy to use Specifications:Model: AT6000 Detection Range: 000 - 020BAC% ; 000 - 200 g/L; 000 - 200BAC ; 000 - 100 mg/L; 000 - 200 mg/100mL Alarming Threshold: 005% BAC; 050 g/L; 050 BAC; 50 mg/100mL Test Accuracy: 10% FS Working Voltage: DC 5V 3xAAA batteries(not included) Working Current: 120mA Environmental temperature:-10 to 50Relative Humidity 95% Display: 3 digits LCD display with blue backlight Battery Expectancy Time: 2000 Times Size:103 x 65 x 27mm(LxWxH) Package Included: 1 X Alcohol Tester ,11 xFilter tips