Complex sentence: EIA-485, like EIA-422 can be made full-duplex by using four wires, however, since EIA-485 is a multi-point specification, this is not necessary in many cases.
Split into simpler sentences: EIA-485, like EIA-422 can be made full-duplex by using four wires. Since EIA-485 is a multi-point specification, however, this is not necessary in many cases.