... off brake lever. this hidden wire brake sensor is more compact. HWBS is a brake sensor, can be used on electric bicycle ... off function come ture, no need to chance brake. 2, Sensor installed on the soft shaft of the brake, detection the ... · Lead tension: >20N· Corresponding Time when brake: <0.001S· Corresponding distance: 2-3mm· Mechanical life: >2M times · Electrical life: >20M times ...