Advanced planar alcohol sensor with quick response. SMD assembly for stable performance. Direct test process with LCD indication. Digital LCD display with blue backlight. Portable and stylish design. Audible alarm when outside preset range. Sensor failure self-test function. Power saving design with low voltage indication. Automatic warning when limits are exceeded. Digital output. Includes instructions and 10 mouthpieces. Compact and lightweight design fits easily into a purse or pocket. Easy to use. Detection range: 0.00 - 0.20% BAC; 0.00 - 2.00 g/L; 0.00 - 1.00 mg/L; 0.00 - 200 mg/100ml. Alarm threshold: 0.05% BAC; 0.50 g/L; 50 mg/100ml. Test accuracy: ±10% F.S. Working voltage: DC 5V, powered by 3x AAA batteries (not included). Display: 3-digit LCD with blue backlight. Expected battery life: up to 2000 tests. Dimensions: 103 x 65 x 27mm (L x W x H).