RS232? Yes, it noted that. "The BCT-200J will interface with any basic (ANSI) terminal
emulation software. Most operating systems contain a program that
will do this. Following are instructions for Windows." (continues on about serial port settings.)

I'm left to guess you need the RS232 port. If so, I like that one at serialio.com HOWEVER you may need tech support on site to get you all wired up and your terminal program running.
Bob