Originally Posted by
caloso
This.
It also is somewhat limited in that it will only do bluetooth. This may not be an issue for you if you have a newish trainer. I used it for a season with kludgy but workable solution because I had a dumb trainer and an Ant+ powermeter on my bike.
Yes. This is an important point. All my sensors are BT. Keep in mind that the Apple TV has a limited number of BT channels (3), and one of those is taken up by the remote. My trainer has speed/power/cadence on one channel. My HR monitor is another channel.