The TRF-UZ1 is a small device that connects over the home network via CAT5 wiring to a URC MRX-Series controller to extend the range for whole-house or office control. For instance, if the controller is located in a rack far away from the main control areas in your home, you can place the TRF-UZ1 in a more centralized area, so that URC remotes, advanced thermostats and other compatible URC RF products can communicate effectively. This allows for control of components from anywhere within the home or small office.