Function: 1. Non-contact testing: Portable tester alcohol is a non-contact impact test, no need to carry out mouthpiece test, which is healthier and safer 2. Charging via USB: The rechargeable tester of alcohol has a three-color LCD display that can react quickly and has a USB charging function 3. Small and portable: The tester alcohol is compact and easy to carry, allowing you to test anywhere, anytime 4. Solid State Sensor: The breathalyzer uses solid state sensors to provide accurate data and can be used with confidence 5. Material ABS: tester alcohol in exhaled air is made of ABS material, which is wear-resistant and durable and has a long service life Specification: Item Type: Tester Alcohol Material: ABS Voltage: 5V Current: 1A Battery: 200 mAh lithium battery (included) Response time: 20S Range: 0 to 0,19% BAC; 0 to 1,9 g/l Error: 0,01% BAC Operating temperature range: -5 to 45 Storage temperature range: -20 to 50 Blowing time: 5 seconds Weight: Approx. 78g/2.8 oz List of packages: 1 x tester alcohol 1 x User Manual 1 x USB power cable Note: Supplied with built-in battery 1. Press the button for 1 second to turn it on, the backlight and display will light up at the same time, display all the content and beep to turn it on. 2. The display shows “Warm-up” and a 10-second countdown. Once the countdown is complete, an audible signal will sound, which means that it will move on to the next stage at the same time. 3. The display shows “Blow” and a 10-second countdown. Blow into the blowing area for 3 to 5 seconds. When the countdown is complete, the beep will ask you to enter the results screen. The test result is displayed in two units %BAC and g/l. 4. When the test result is less than 0,02% BAC, the green light indicator is always on. 5. When the test result is greater than or equal to 0,02% ABC and less than 0,05% BAC, the yellow indicator light is always on, the “Note” icon on the display screen flashes and a slow beep is heard. 6. When the test result is greater than or equal to 0,05% BAC, the red indicator light is always on, the “Danger” icon on the display screen flashes and a fast beep is heard. The test results show a time of 10 seconds.