The optical repeaters/isolators add 4,000 feet (1.2 km) and another 32 nodes to an RS485 data circuit in an industrial environment with DIN Rail mounting. Adds 4000 feet (1219.2 m) and another 32 nodes to an RS-485 data circuit. By configuring one side as RS-422 and the other side as RS-485 it acts as a converter to enable a 4-wire RS-422 device to communicate with a 2-wire RS-485 device. Features 10-48-VDC operation and withstands temperature extremes. Modbus ASCII or RTU compatible. Automatic Send Data Control eliminates the need for driver software. Conveniently mount on optional DIN Rails.