Arduino‘s MKR 485 shield is designed to allow the Arduino MKR series of development boards to connect to industrial automation systems using the RS 485 protocol. It can also be used to extend the serial wired communication over a much longer range. This board supports half duplex and full duplex operation, with or without biasing and termination, and master/slave configuration. An onboard 3-way DIP switch allows simple configuration. With this shield, designers can turn old industrial machinery, heating systems, and conveyors into IoT devices.