The AirWiz LED color indicates the pressure state. A fast blinking green LED indicates that the air pressure is within the target range, a fast blinking red LED indicates that the air pressure is above the target pressure, and a slow blinking red LED indicates that the air pressure is beneath the target pressure.
AirWiz has a sensor inside the air chamber to monitor air pressure. The range of recommended pressure is set by the SRAM AXS app based on the fork or rear shock configuration and rider weight.
For complete details, consult the AirWiz User Manual.