Product Name: RS232 to RS422 Converter Product Code: CVT-RST-606003 Description: EIA/TIA RS232C standard and RS422 standard DB9 connector female for RS232 port, and DB9 male connector with terminal baord for RS422 port Transmission rate: 300 - 115200bps Transmission distance: maxium 1200m for RS422, up to 5 m for RS232 Working mode: asynchronous, duplex, differential transmission. Working environment: 0 ~70 C, relative humidity 5% - 95%