I have a speed sensor and cadence sensor 2 that are connected to my edge 530. Both devices show speed and cadence but very volatile, meaning at steady pace and speed, the cadence moves easily by 10 rpm up and down and speed by 5 km/h up and down. I have reset both devices but problems persists.
Since it is both the cadence and speed sensors that show this problem it is likely the edge. Previous speed/cadence sensor worked well on with the edge 530 though.
Any advice is welcome 
