Hall Sensor HELLA wheel speed sensors use Hall effect technology to measure rotational speed and position, detecting movement down to just 0.1 km/h. Provide critical input for ABS, ESP, and automated driving systems, helping detect wheel lock or slip for enhanced vehicle safety. Ensures high measuring precision even in extreme temperatures, with low maintenance and long service life due to HELLA's quality engineering. Please check OEM number for correct fitment before installation.