Thanks, I will look into a few of these suggestions.
The actual panels are not in line of sight of the house (behind a couple of large rocks) so I am not sure if wireless would work. It also took a lot of effort tree and rock climbing to get the original wire in.
Cheers
Geoff
How can I do the following, or does anyone know of a similar circuit?
I have a remote Solar Panel with a Tracking controller 300 feet away. It has a 24 volt power line running to the house. I can talk to the Tracker with RS232, but it is akward to run a second cable.
I want to multiplex the...