Is this Trace SW4024 interter system worth anything?

The previous owner of my home had a Trace SW4024 backup system installed I am guessing about 20y ago with a PC250 converter, and when they went solar in 2014 he never hooked the Trace system up to it and it was left disconnected mounted to the wall in the basement.

He told me that I should try to either use it or sell it, but I have no need for the kind of power assurance he did for his work.

Recently I removed it and am trying to figure out whether to try and sell it or simply have it hauled away as scrap. Is this something that is worth anything?