Condition: 100% Brand new_x000D_Item Type: Converter Adapter_x000D_Interface: EIA/TIA compatible RS-232C standard and RS-485 standard_x000D_Electrical Interface: RS-232 is a DB9 female (hole), RS-485 is a 4-bit terminal_x000D_Working Mode: Asynchronous, half duplex. Differential transmission_x000D_Transmission Medium: Twisted pair or shielded twisted pair_x000D_Communication Rate: 300-115200bps_x000D_Size: Approx. 57 x 37 x 17mm / 2.2 x 1.5 x 0.7in_x000D_Working Environment: 2-50, relative humidity 5%-95% (commercial working environment is 0-70), (industrial working environment is -20-85)_x000D_Communication Distance: 1200 meters (RS-485 end), 5 meters (RS-232 end) 1Adopted of high quality electronic components, and accuracy process, ensure for the durability 2This converter is compatible with RS-232C and RS-485 standards 3It converts single-ended PS-232 signals into balanced RS-485 differential signals and extends communication distance to 1.2 kilometre 4The converter is passive and does not require an external power supply 5Widely used in industrial automation, canteen sales systems, employee attendance management, highway toll stations, etc.1 xConverter Adapter