RS-232 Interfaces
(1-16 Ports) PCI, ISA, USB, PC/104 PCMCIA, & Ethernet Expansion.
www.sealevel.com
RS-232/422/485 Converters
Telebyte is the worldwide leader in RS232, 422 485 Interface Converters
www.telebytedatacom.com
Wireless scada Modems
MaxStream radios for RS232 & RS485 Long range, low power, low cost
www.maxstream.net
Korenix Media Converters
JetCon RS232 to RS422/485 converter industrial to fiber/ RS232 to USB
www.korenix.com