Expand your DirecTV service to multiple TV sources with the Eagle Aspen DTV3X4 DirecTV Multi-Switch. It is designed to combine off-air or cable TV with satellite signal to one cable per TV for up to four receivers in your home. This DirecTV-approved satellite multi-switch features extra LNB input and antenna input for cable and antenna feeds. It also is enclosed in a die-cast case for either indoor or outdoor use. This item is a signal routing switch and needs no power supply.