Description: Quickly estimate your blood alcohol concentration with this small and contactle alcohol breathalyzer. No need to worry about forget to install a mouthpiece or hygiene iue, you can directly blow to the tester inhaler without a mouthpiece, more convenient and safe. Portable to carry it with you, testing your BAC at any time and anywhere. It's a portable alcohol tester with a semiconductor sensor at its core. It has the advantages of high sensitivity, high stability and accurate detection. The instrument adopts LCD screen display. This product is suitable for the detection of drunk driving or alcohol detection before work, from effectively avoid accidents, protect people's life and property safety. How to Use: 1. Pre the button for one second to start the machine, the backlight and the display screen light up at the same time, display all contents and "drop" to prompt the machine to start. 2. The display screen shows "Warm up" and a 10-second countdown. When the countdown is over, a "drip" will prompt you to enter the next stage simultaneously. The sensor oxidizes when the tester is not used for a long time, so when the tester is first taken out of the package or not used for a long time, the user needs to warm up the product several times before performing the alcohol test. 3. The display displays "BLOW" and a 10-second countdown. When the countdown is over, a "drip" will prompt you to enter the result display. 4. During the 10-second countdown period, the countdown will jump directly to the 4-second countdown detection when the air containing alcohol is detected. 5. Test results are displayed in units of %BAC and g/ L. 6. When the detection result is le than 0.02%BAC, the green indicator is on. 7. When the test result is greater than or equal to 0.02%ABC and le than 0.05%BAC, the yellow indicator is steady on and the Caution icon on the display screen is blinking with a slow beeping sound. 8. When the detection result is greater than or equal to 0.05%BAC, the red indicator is steady on and the DAnger icon blinks with an urgent beeping sound. The test results show a time of 10 seconds. Feature Product Name: Portable alcohol tester Material: ABS Charging input: 5V 1A Battery capacity: 200mAh Execution standard: Q/JSC 002-2018 Product size: L92mm*W26mm*H20mm Notes: 1. The first use of the tester or after a long time no use, pre the power button and retry several times if poible. 2. Repeatedly 2 or 3 times to obtain more accurate results. 3. Do not smoke and eat for 20 minutes prior to testing. 4. The test result is for reference only. 5. Rechargeable with USB cable Package includes 1* Alcohol Tester 1* USB data cable 1* Manual