■ Compatible RS-485/422 standard of EIA/TIA.
 

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

■ Great increase of the communication distance of RS-485/RS-422 BUS network and  the reliability of RS-485/422 network.
 

■ Baud rate: 300BPS-115.2KBPS
 

■ A maximum connection of 128 pieces of RS-485 or RS-232 interface devices.
 

■ Communication distance: 5 KM(9,600BPS).
 

■ Power indicator light and data traffic indicator light available for malfunction   indication.
 

■ Working mode: applicable to both asynchronous half duplex (RS-485) and asynchronous full duplex (RS-422) without any jumper settings needed.
 

■ Enhanced photoelectric isolation (an isolation voltageup to 2.5KVrms /500VDCisolation), dedicated DC/DC module, 600W lightning  strike and  surge protection ,+/-15KV ESD protection and grounding interference protection for each RS-485/422 line.
 

■ Electric interface: connector from DB9 female to DB9 male.
 

■ Transmission media: STP
 

■ Dimensions: 113mm×55mm×25mm
 

■ Working environment: -40℃ to 85℃, relative humidity 5% to 95%.
 

■ Plug-and-play and universally applicable to all the existing communication 

software.
 

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