The Digital Alcohol Tester Professional Alcohol Detector Breathalyzer Police Alcotester is a portable and durable device designed for testing alcohol content in human exhaling air. It is lightweight and easy to carry, making it convenient for on-the-go use. The device features an advanced flat surfaced alcohol sensor with good sensitivity and excellent repeating function. The testing program is controlled by artificial intelligence design micro-computer, ensuring a reasonable and simple working process. The LCD digital character photo display provides clear and straight readings, and the device is equipped with a backlight for easy visibility. When the tested exhaling air alcohol content exceeds the preset value, the device will sound an alarming signal to remind you of your safety. The Digital Alcohol Tester Professional Alcohol Detector Breathalyzer Police Alcotester is equipped with a quick response nano semi-conduct alcohol sensor and stable SMD assembling for reliable performance. The LCD display directly indicates the testing process, and the blue backlight enhances visibility. Its portable and fashion design adds to its convenience and style. The device also features an audible warning when the preset limit is exceeded, as well as a sensor fault self-checking function. The battery saved design includes a low voltage indication to ensure you always have power when you need it. With its digital LCD display and advanced features, this alcohol tester is a reliable tool for testing alcohol content. Specifications: - Sensor type: nano semi-conduct alcohol sensor - Working power: DC4.5V (3 x AAA battery) - Undervoltage display: Vcc Key Features: Portable and durable design Advanced flat surfaced alcohol sensor LCD digital character photo display Quick response nano semi-conduct alcohol sensor Portable and fashion design Audible warning beyond preset limit Sensor fault self checking Battery saved design with low voltage indication