Black Box ME800A-R4 network extender Network repeater

Extender async RS232 devices beyond the 50 ft limitation using CATx cables at data rates up to 115.2 kbps and reach distances of 4000 ft.

RS-232 is the most common serial interface in use today. This means you can use your SHM-C in RS-232 installations - industrial applications; security systems; UNIX®, DEC2, and HP® workstation connectivity; and more.

Choose our 4-Wire SHM-C Async to transmit data up to 4 miles (6.4 km). Run loopback tests simply by pressing a front-panel button. Open the flip-top lid for quick DTE/DCE selection.