Originally Posted by njkayaker

The new and old speed/cadence sensors look exactly the same to the head unit.

The head unit has no idea what type of sensor is transmitting the data.

You can use the old/new sensors with any of the Edges (200/500/510/800/810/1000, etc).

It's also less work to program and debug.

It's kind of a basic point of the ANT+ stuff.