HY-813 RS232 to RS485 Industrial mini interface converter
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 without necessity
    for initialization of the serial ports to obtain power supply.
5.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.
11.Dimensions: 63mmX33mmX17mm.
12.Working environment: -40to 85degree, relative humidity 5% to 95%.
13.Supporting DOS/WIN95/WIN98/WIN2000/NT/XP and Linux, etc