RS-232 To RS-485/422Non-Powered ConverterRS-232Connector: Male DB9Signal: TxD , RxD , GNDLoop back: RTS to CTS is shorted, DTR to DSR and DCD are shortedRS-485/422Connector: TerminalRS-422 Signal: TxD+, TxD-, RxD+ , RxD-RS-485 Signal: Data+, Data-Mode: 4-wire RS-422, 2-wire RS-485 (Select RS-422 or RS-485 by DIP Switch)Pull High/Low: 1K/1K OhmBaud Rate: 300 bps to 115.2 KbpsSurge Protection: 15 KV ESDPower Protection: YESPowerInput Power: RS-232 Port Power, TxD, RTS, DTRPower: 5V DCPower Consumption: 20 mA @ 5V DC (termination disabled)Dimension: 55 * 40 * 25 mm (W * D * H)Weight: 35 gEnvironmentOperating Temperature: 0℃ ~ 60℃Storge Temperature: -20℃ ~ 85℃Humidity: 5~95 % RHApproval: CE , FCC, RoHS