Process safety: Just blow into the instrument to accurately measure the alcohol content in the body. No contact required. It can prevent cross infection and the treatment is safe. High Sensitivity: The alcohol sensor with the most advanced technology 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 that the alcohol content exceeds the limit. LCD screen: LCD screen with backlight, easy to use at night. Just two AAA batteries (not included) for extended use. Automatically activates power saving mode when in standby. Portable rope: fixed portable rope, compact design. Portable and compact, easy to carry. describe: The alcohol tester is 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 Answer: 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. Auto power off: about 1 minute Size: 105x50x20MM Colour: Black Delivery Quantity: 1 Piece Alcohol Tester (Only the above package contents, no other products)