JBER RS232 to RS485 Interface Converter DB9/DB9 Compact Interface Converter Adapter(Maxim Chip and Half-duplex) (RS232 to RS485 (Industrial Grade,Black))

JBER RS232-485 converter can transfer the TXD and RXD signals of RS-232 serial port to parallel half duplex RS-485 signals without external power supply. The converter connects RS232 port with DB9 female terminal to RS485 port with DB9 male terminal with wiring pad.RS232 pin out. Maxim Chip included. Transmission distance: 5 meters(RS-232 side) and 1200 meters (RS-485 side). Work environment: -10 degree Celsius to 85 degree Celsius, relative humidity: 5% to 95%. Electricity interface: DB9 interface of RS-232 end, DB9 pin connector of RS-485 end. Signals: RS-232: DCD(1), RXD(2),TXD(3),DTR(4), 5GND(5), DSR(6), RTS(7), CTS(8),RI(9). DB9 Male connector: D-/B(1), D+/A(2), ---(3), ---(4), GND(5), + 5v~ + 12v(6), ---(7), ---(8), ---(9) RS-485 terminal board: D+/A(1), D-/B(2), GND(3), + 5v~ + 12v(4).Transmission distance: RS485 max. 1200m, RS232 side max. 5m. Power supplying: A. directly via RS232 PIN 3 plus PIN7 ( RTS ), PIN 4 ( DTR ) as supplement to supply. Wiring and signals: RS232 End(DB9 Female) RS485(DB9M Male)