AstroAI Digital Air Pressure Gauge for Tires, 4 Settings for Car/Truck/Bicycle with Backlit LCD and Non-Slip Grip, Includes AAA Batteries, Black; Stocking Stuffers

The issue might be caused by the batteries running out of power. Please try to replace the batteries and it uses two AAA batteries.

Please try to align the valve vertically and stay for more than 2s when you check tire.

The issue might be caused by the batteries has ran out of power and please try to replace the batteries with two AAA batteries. Otherwise please contat our support team directly for help.

The tire pressure gauge has an error of ± 1PSI while measuring.

The tire gauge will automatically shut off in 30-40 seconds to save the power.