Pedal Assist Magnet Ring

Electric bicycle speed sensor (known as PAS, wheel mounted sensor) works well for pedal-assist electric bicycles drive system, save your labor while pedaling, riding is more convenient, make cycling easier and funnier.

Pedal assist sensor is a high-tech component designed for electric bicycl, it employs the dual-magnetic loop - hall elastic angle difference to detect the dynamic , which is converted to dc signal and sent to the controller