Type: RS232 'RS422 / RS485 converter
Speed: Up to 921.6 kbit / s
Distance: Up to 1.2 km on RS422 / 485 s in it and up to 15 m in RS232 since
Supply: Supplied by RS232 port or 9 - 12VDC
Connectors: RS232: DB9F, RS485: Screw Terminal
switch to select RS422 or RS485 well as local echo on or off by RS485
signals: RS232 : TXD, RXD, RTS, DTR, GND
signals: RS422: TXD +, TxD-, RXD +, RXD-
signals: RS485: TRXD +, TRXD-