International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions. Alarm light When the test result reaches the alarm level, the alarm indicator lights green-orange-red and flashes at the same time 10 times. When the test result reaches the warning level, the alarm indicator lights green and orange. If the test result is safe, the alarm indicator lights green. use: after the alcohol tester is warmed up for 19 seconds, "bLo" flashes 2. 5 seconds and beeps, the device is ready for a breath test. Please take the measurement during this time, otherwise the device will turn off automatically. Continue blowing for 5 seconds, when the beep stops, the test result is displayed on the display. Note: rinse mouth with water before use and do not smoke or drink alcohol 20 minutes before use. four test units. The alcohol tester has four test units. In the test result display, press the on/off button for 2.0 seconds to switch the measurement unit between mg/L, %oBAC, %BAC and g/L, and the next test. The results are displayed in the units of your decision. 10 interchangeable mouthpieces. The alcohol tester is equipped with 10 mouthpieces, and the mouthpieces can be washed and recycled. Ultra-compact design, the breathalyser fits into a pocket for easy transport and transport. Alcohol tester is the best option for motorists.