RS-232 / RS-485 Bi-directional Converter This is a RS-232 and RS-485 bi-directional interface converter. Simple second-line communications can be RS485 multi-point framework for communications networks. Has been widely used in point-to-point, point-to-multipoint interface of RS485 communication equipment such as: 1. Industrial Automation System. 2. PLC and PLD. 3. Intelligent surveillance system. 4. POS credit card machines, POS systems. 5. Data acquisition, control system and so on. Specification : Serial interface : Interface compatible with EIA / TIA of RS232C, RS485 standard Transmission medium : Ordinary twisted-pair Transmission distance : 0-5Km (115200 - 9600bps), which 1.2Km (up to 57.6Kpbs) Power Requirements : Without Joint approach : RS-232 -> DB9F, RS-485 -> DB9M DB9F (with five terminals) Signal : RS-232 -> TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND Work : RS-485 -> Asynchronous half-duplex Communication protocol : Transparent Operating temperature : -20â„ƒï½ž50â„ƒ Relative humidity : 5%ï½ž95% Blister Packaging