Bi Directional Communication RS232DescriptionBi Directional Communication Data Rs232 To Rs485 Serial Converter Stm485sThe bi-directional connectors of this converter are mainly used between the main controllers.The RS232 to RS485 converter can transfer TXD and RXD signals from the RS-232 interface and at the same time after transmitting RTS 7-pin data terminal DTR to support the delivery of this converter.RS232 to RS485 Transmitter Converter Communication Data AdapterThe RS232 converter ensures that you need to reset it and make easy application of hardware and software installation.Bi Directional Communication RS232Serial port function: simultaneously compatible with RS-232, RS-485 standard of EIA/TIA. Electrical interface: DB9 hole interface of RS-232 end, DB9 pin plug of RS-485 end, compatible with post (5 ports) Working methods: asynchronous half duplex. Tran..media: common wire, double wire or UTP or shielding line. Transmission speed: 300-115-21BDS Transmission distance: 5 meters (RS-232 end) 1200 meters (RS-485 end) Telecommunications agreement: transparent. RS232 adapter working environment: -10 degrees Celsius to 85 degrees Celsius, relative humidity: 5% to 95% RS485 Converter Signals:RS-232:TXD, RXD, RTS, CTS, DTR, DSR, DCD, CND; RS-485; Data , Date GND Item:RS232 to RS485 Converter Dimensions: 9.8 x 3.2 x 1.7 cm Weight:74g    en.wikipedia.orgRS232-485 converter can transfer the TXD and RDX signals of RS-232 serial port to parallel half-duplex RS-485 signals without external power source because it can collect electricity supply Pin 3 RS-232 port and also Categories: Converters, Programmers, Programmers & Microcontroller Tags: Bi-Directional, Communication RS232, Converters, RS232 to RS485 Converter STM485