AstroAI Digital Tire Pressure Gauge with Inflator, Heavy Duty Air Chuck, Rubber Hose and Quick Connect Coupler, ​250 PSI, Model ATG250, Blue

The tire pressure gauge has an error of ± 1.5PSI while measuring.

The air is flowing during the test or inflation, so the readings will change constantly. The air compressor cannot read the actual pressure while inflating. You may add/bleed air after you let go of the trigger and read the pressure.

For your convenience, our tire inflator comes with all accessories and batteries already installed.

This issue may be probably caused by the broken internal chip. Please contact our support team directly for help.