RS485 to RS232 communication drivers and converters

 Model: RS232-RS485- Quantity: 1- Color: Grey + Green- Material: ABS- Able to convert RS-232 signal to RS-485 balanced differential signal and extend the communication distance to 1.2km- Uses a particular pump to gain power from RS-232 signal (RTS, DTR, TXD) without initializing the RS-232 series interface.- This interface converter does not require any AC or DC power- Serial port feature: Concurrently compatible with RS-232C, RS-485 standard of EIA/TIA- Electric interface: D89 hole interface of RS-232 end, DBP pin connector of RS-485 end, compatible with post (4 or 5 connection)- Work methods: Asynchronous half duplex- Transmission media: common wire, double wire or UTP or shielding Line- Transmission rate: 300~115200bps- Transmission distance: 5 meters (RS-232 end) 1.200 meters (RS-485 end)- Tel-communication agreement: Transparent- Work environment: -10°C to 85°C, relative humidity: 5% to 95%- Signals: RS-232: TXD, RXD, RTS, CTS, DTR, DSR, DCD, CND; RS-485: Date+ , Date, Date. GND- Packing list:- 1 x Converter- 1 x Chinese user manual Dimensions: 2.48 in x 1.30 in x 0.67 in (6.3 cm x 3.3 cm x 1.7 cm)Weight: 2.43 oz (69 g)