Function: This product can be used as a signal router, you can have a TV in two separate rooms, you can turn on a TV in a room, when you want to switch rooms to continue watching TV, just switch one off TV and turn on another TV, and then route the signal to the TV in another room. Ideal for connecting one HDMI compatible device to two visual output devices Allows connection of HDMI devices with built-in HDMI ports, such as HDTV, PlayStation 3, Upconvertor DVD player, LCD monitor, and projector. Gold-plated connectors can achieve better signal transmission. Allows connection of HDMI devices with built-in HDMI ports, such as HDTV, Play Station 3, upconversion DVD players, LCD monitors, and projectors. hdmi splitter 1 in 2 out 4k hdmi splitter$Only 1 output device should be active at any time, unless both TVs are the same size, both TVs will display images when connected.