-Grade Accuracy Breathalyzer Portable Tester With LCD Digital Display For Home Or Party Use With 5 Mouthpieces Features: ?????????????????????? & ???????? ?????????????????? tester meets -level accuracy. Breathalyzer has intelligent sensors, semiconductors and microprocessors of converting the input signal into accurate and results. ???????? ???? ??????????????Breathalyzer is very and easy, making testing easy for all. Just press the power button for 3 second to start the tester, wait 10 seconds for heating, then blow for 3-5 seconds, the will be 3-4 seconds, and it will be displayed on the LCD screen for 10 seconds. ????????????-???????????? & ????????-?????? ????????????????Breathalyzer powered by two AAA batteries (not included, but commonly available), it automatically turns off 10 seconds to save power. Each time you install a battery, you can test more than 200 times. In addition, low-power instructions were designed. ???????? ???? ???????? ?????? ?????????????? ??????????With the LCD display, breathalyzer is easier to read even in less than optimal light conditions and offer precision for safe driving. It will give you an alarm by beeping when the allowable limit is exceeded and and danger is displayed. ???????????????? ????????????This breathalyzer just 4.53 x 2.75 x 1.25 inches, can be easily carried in your wallet or pocket everywhere. Great for wedding, parties, feast, banquets or a drink at the bar, don't drink and drive! Product Description: Product Description Why You Choose Us? * Convenient and Portable: Pushbutton Operation Breathalyzer, Portable Breathalyzer. * Easy to Read: Breathalyzer with light orange digital LED display that is easy to read even in low light conditions. * Energy Saving: Our breathalyzer can set automatic shutdown. And low power instructions are designed. How to Use ? 1. Press and hold the power button for 3 seconds, the control LCD screen will light up and beep (the sensor may take longer to warm up the first power on or a long period of inactivity, try again and wait at least 3 minutes 2.When you successfully enter the heating mode, breathalyzer display "Warm up" and wait 10 seconds. 3.When the warm-up is complete, breathalyzer the "Blow" will be displayed and a 10 second countdown will begin, indicating it is currently in test mode. a deep breath, blow out the gas with normal for 3-5 seconds. 4.Read the test results from the meter LCD display. Specifications * Product name: High precision tester * Product model: AT-65s * Sensors: advanced sensors for semiconductor oxide alcohols * Range: 0.00% -0.19% BAC (0.0-1.9 g / L) * Accuracy: -0.01% to 0.02% to 0.05% BAC * Warm-up time: 10 seconds * Response time: 10 seconds * Operating temperature range: -10 ~ 50 * Digital display results: (% BAC / BAC / / L) *Power consumption: 2 "AAA" 1.5V alkaline batteries (not included) Package Included 1x Tester 5x Mouthpieces 1x User Manual Note It has a large number of gas & impurity adsorbed on the surface of tester, when first time out the tester from the packaging, or long time no using for the tester, it need more time for cleaning and warm up the sensor, you should repress the power button and retry several times if possible.