Alcodetector M40 alcohol tester with a high-quality electrochemical sensor for personal use. Measure your blood alcohol concentration quickly and accurately. Premium platinum electrochemical sensor – works faster, measures more accurately. Unlimited 24-month warranty on all parts. Calibration and maintenance are performed in Lithuania. Measurement range from 0.00 to 5.00 ppm. Unique calibration reminder function - the Alcodetector M40 not only reminds you of the test counter but also the number of days remaining until the next service. When the alcohol tester is turned on, the display indicates how many days until the next service is required. Additionally, the device displays a message reminding you of 500 completed tests or the end of the calibration period. Accuracy ± 0.05 ‰ at 1.00 ‰. The memory of the last 10 tests is displayed on the device screen. Counter of completed tests. The opening and tip of the disposable mouthpiece are bluish. Compact, durable, and comfortable design housing. Economical - you can perform up to 1000 tests with one set of batteries. Warning signal when exceeding the 0.50 ‰ limit. Low battery warning. Made in South Korea.