Black Box ME800A-R4 Async RS232 Extender CATx

Keep serial systems online when distance would normally break the connection. The Black Box ME800A-R4 Async RS232 Extender CATx carries asynchronous RS-232 traffic over CATx cabling, pushing reliable communication well beyond the standard 50 ft limitation. With support for data rates up to 115.2 kbps and reach up to 4,000 ft, it gives infrastructure teams a practical way to preserve legacy serial workflows without redesigning the endpoint environment. This extender is designed for paired deployment, making it a fit for point-to-point serial links where consistency matters more than convenience. It is well suited to industrial applications, security systems, and workstation connectivity where RS-232 remains the interface of record. The desktop form factor keeps installation straightforward, while the compact footprint fits cleanly into equipment rooms, control areas, and integration benches. For organizations maintaining mixed-generation infrastructure, this model helps extend the life of serial devices that still perform a critical role. It offers a focused answer to a specific problem: how to move RS-232 data farther without sacrificing the protocol your systems already depend on. Backed by a 1-year limited warranty and built by Black Box, it is a disciplined choice for environments where uptime and compatibility carry real cost.