Catalog > Consumer Electronics > Kits > Various Kits RS232 to RS485 Convertor Board RS232 to RS485 Convertor Board BDD RS-232 TO RS-485 CONVERTOR RS232 to RS485 Convertor Board. Convert TXD and RXD to 2 Line Balance Semiduplex RS485 Signal. DB9 Screw Terminal Board Included 78.32 ZAR inc for 1 Each 175 in Stock Add Specifications, Prices & Availability may change without notice. Images are for illustration purposes only. E&OE Downloads User Manual - RS-232 TO RS-485 CONVERTOR PDF File 1013.73 KB