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 levels exceed preset thresholds. Sensor failure self-test function. Power-saving design with low voltage indication. Automatic warning for alcohol levels above preset limits. Digital output. Includes instructions and 10 mouthpieces. Compact and lightweight construction fits easily into a purse or pocket. Simple operation—ready to use in seconds. 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. Operating 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).