PCB DB 9Pin RS232 to RS422 RS485 Interface Data Adapter Converter Product Name : RS232 to RS422 /RS485 Converter;Type : RS232 DB9 Female to RS422/RS485 Transmission Distance : 1.2KM;Transmission Speed : 300-115200 bps Material : Plastic, Metal;Main Color : Gray,Black,Green Total Size : 10 x 3.3 x 2cm/ 3.9" x 1.3" x 0.8" (L*W*H);Weight : 34g Package Content : 1x Data Communication Adapter1x Terminal Board