Compatibility: EIA/TIA RS232C standard and RS485/RS422 standard Interface RS232 side: DB9 female connector Interface RS485/RS422 side: DB9 male connector with optional (included) terminal board Transmission rate: 300 to 115,200bps Transmission distance: RS422 maximum 1200m, RS232 side maximum 5m Working modes: asynchronous, duplex and differential transmission Working environment: 0 to 70 Celsius Relative humidity 5 to 95% Colour:Photo Color Material:ABS Size:95 x 33 x 17mm Package Contents: 1 x RS422 Converter Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.