RS232 to RS485 Converter Bidirectional Interface ABS RS232 to RS485 Converter Adapter for Data Transmission Item Type: RS232 to RS485 Converter Material: ABS Serial Port Features: The interface is compatible with EIA, TIA RS232C, RS485 standards Electrical interface: RS232C end DB9 female connector, RS485 end DBP pin connector, with terminal (three position connection) How it Works: Asynchronous Half Duplex Transmission Medium: Ordinary Wire, Twisted Pair or Shielded Wire Transmission Rate: 300 115200BPS Transmission Distance: Approx. 5meters (RS232 End) , Approx.1200meters (RS485 End) Communication Protocol: Transparent Signal: RS232: TXD, RXD, RTS, CTS, DTR, DSR, DCD, GND RS485: Date+, Date-, GND