The wheel speed sensor is a sensor used to measure the speed of a car's wheels. Commonly used wheel speed sensors are: magnetoelectric wheel speed sensor, Hall type wheel speed sensor. For modern cars, wheel speed information is essential. Vehicle dynamic control system (VDC), automotive electronic stability program (ESP), anti-lock braking system (ABS), automatic transmission control system, etc. all require rounds. Speed information. Therefore, the wheel speed sensor is one of the most critical sensors in modern cars.