RS-485

RS-485 is a EIA standard interface which is very common in the data acquisition world

RS-485 provides balanced transmission line which also can be shared in Multi-drop mode.

It allows high data rates communications over long distances in real world environments.

RS-485 was designed for greater distance and higher baud rates than RS-232.

According to the standard, 100kbit/s is the maximum speed and distance up to 4000 feet(1200 meters) can be achieved.