Process safety: Just blow into the instrument to accurately measure the alcohol content in your body. No contact required. It can prevent cross-infection and make the treatment safe. High sensitivity: Using the most advanced technology, the alcohol sensor has high sensitivity and fast response. The effect is very obvious when the workload is heavy. Loud warning: When the value exceeds the set value, a loud warning can be issued to remind you that the alcohol content exceeds the limit. LCD screen: The LCD screen has a backlight for easy use at night. Just two AAA batteries (not included) provide extended use. Automatically activate power saving mode during standby. Portable rope: fixed portable rope with compact design. Lightweight and compact, easy to carry. The alcohol tester is specially designed to accurately measure the alcohol content of the human body; it is easy to use and can be measured by blowing air around the instrument. Product information: Warm-up: 10 seconds Response: 5 seconds Recovery: 10 seconds Test range: 0.00~0.20% BAC or 0.0~1.9g/L Accuracy: 0.01% bad alarm point (0.05% BAC) Alarm range: 0.05% BAC (0.5 g/L), sound and light alarm. Automatic shutdown: about 1 minute Size: 105x50x20MM Color: Black Delivery quantity: 1 piece alcohol tester (only the above package content, no other products)