I have a 5332E display. Are these still available? Are parts available?

I have a 5332E display. Are these still available? Are parts available?

No, the 5332E display is no longer available and has been replaced with the FINCH II display.

I have a 5332E display and plan to replace it with the FINCH II display. Will the FINCH II display be compatible with my existing TD80 system?

I have a multiple compartment trailer. How many FINCH II displays will I need?