that would be using a 24V DC Port.
I’m a little late getting into this thread, but I think this is the key point. Anything using the 24V DC port will be on/off control only. Certainly not a new trident type device that measures other parameters or anything else that requires any communication with the apex. It could conceivably be a new feeder, but the current feeder connects to the aquabus and I would kind of expect any new feeder to do the same.