URC MRF-350i 433 MHz RF Addressable Base Station MRF350i Universal MSC System remote controls send radio waves in every direction, so your client enjoys No More Pointing operation! The RFX-250i RF Sensor can be freely positioned out of way of the interference the A/V components create, connecting to the MRF- 350i via a 10 cable (which can be extended). The MRF-350is built-in Front Blaster sends commands to components in the same cabinet space as the MRF-350i.