The abs sensor is used in the ABS (Anti-Lock Braking System) of a motor vehicle. In the ABS system, an inductive sensor is used to monitor the vehicle speed. The abs sensor works by the ring gear that rotates synchronously with the wheel and outputs a set of criteria. The sinusoidal alternating current signal has its frequency and amplitude related to the wheel speed. The output signal is sent to the ABS electronic control unit (ECU) for real-time monitoring of the wheel speed.