Air disc brakes often come with wear sensors that attach to the disc pad and register wear as the rotor grinds on the sensor. Unfortunately, many replacements are not built to OE standards and will melt under the extremely high temperatures found in air disc wheel ends.
A-Line Black Shield Wear Sensors are engineered to withstand 1,000° F for 10 minutes of continuous use --- up to three times the standard of low-quality wear sensors.
So, if you are using A-Line, you can be sure your brakes are running the way they are designed, and your fleet score maintains its spotless record.