RS-422 uses the difference between two lines,
known as a twisted pair or a differential pair, to
represent the logic level. (between ±4 V and ±12 V)
● Thus, RS-422 is a balanced transmission
● RS-422 can therefore carry data over longer
distances and at higher rates with greater noise
immunity than RS-232C.
● RS-422 can support data transmission over cable
lengths of up to 1,200 meters