Control all of your home entertainment components with this NextGen Genius remote extender that features a transmitter the size of a AA or AAA battery for simple installation in your existing remote. Five frequencies provide multicomponent control.
I purchased this item to control one set top box from any room I have a TV in. I have the STB in the living room with a TV. The RF transmitter eye on the STB. I have a 1X4 HDMI Splitter with 3D and 4K Support connected to the STB sending signal to all three TV's. If I am in the Bedroom, Basement, or living room watching TV I can control that one set top box in any of the rooms I'm in. The point to this is not to have to rent 3 STB's. Does the Job! Very happy with purchase.