1. Exquisite mini-sized with DB9 connector and wiring post connector.

2. Compatible with RS-232 and RS-485 standards of EIA/TIA.

3. Automatic data transceiver without external volume control signal (RTS).

4. Power supply Unique adoption of serial charge pump without external

    power supply, and three-line(TXD, RXD and GND) communication

5. without necessity for initialization of the serial ports to obtain power supply.

6. A maximum connection of 32 pieces of network devices.

7. Communication distance: 1.2 KM.

8. Communication rate: 300BPS-115.2KBPS

9. Transmission media: twisted-pair cable or shielded cable.

10. Working mode: asynchronous half-duplex (RS-485).

11. Plug-and-play and universally applicable on all the existing communication software.

12. Dimensions: 63mmX33mmX17mm.

13. Working environment: -25℃ to 70℃, relative humidity 5% to 95%.

14. Supporting DOS/WIN95/WIN98/WIN2000/NT/XP and Linux, etc.