The Comprehensive core-101lr RS-232 extender is a low cost, hardware-based solution providing remote access and control of any RS-232 Protocol device. With regular RS-232 devices you are limited to an immediate area of control. The Cat5 RS-232 extender extends control to over 6561 ft. This provides you with a tremendous amount of flexibility in your topology. Now you can place RS-232 devices in any location you want and control them remotely. The RS-232 extender also provides full duplex transmission and is compatible with all RS-232 protocols.