Function: This product can be used as a signal router, you can put a TV in two separate rooms, you can turn on a TV in one room, when you want to change rooms and continue watching TV, turn off a TV and turn it on again on another TV, then route the signalto a TV in another room. Ideal for connecting one HDMI compatible device to two video output devices$ Allows connection of HDMI devices with built-in HDMI ports such as HDTVs, PlayStation 3, Upconvertor DVD players, LCD monitors and projectors. Gold-plated connectors allow for better signal transmission. Allows connection of HDMI devices with built-in HDMI ports such as HDTVs, PlayStation 3, upscaling DVD players, LCD monitors and projectors. hdmi splitter 1 in 2 out 4k hdmi splitter Only 1 output device is active at any time, unless both TVs are the same size, both TVs will display the image when connected. .Items from Sheng Xinshun's shop