Black Box RS-232-RS-485/422 Converter Plus with Opto-Isolation - transceive
25 pin D-Sub (DB-25)
up to 4000 ft
Black Box has doubled the speed of its top-selling converter to keep up with today's PCs. So if your PC has a 16550 UART chip, you can send data at 115.2 kbps! The RS-232/485/422 Converter Plus has a line bias feature that prevents it from receiving line noise as send or receive signals. Works in all popular 2- or 4-wire applications, too.
This unit is functionally identical to the BLACK BOX RS-232/485/422 Converter Plus, and it has built-in opto-isolators.