The dual hdmi adapter is for splitting 1 HDMI signal to 2 HDMI. It provides a fast and easy way to simultaneously connect 2 HDMI displays to a single digital HDMI source. Suitable for High Definition image resolutions such as 720p, 1080i, and 1080p. Connect an HDMI compatible device such as a Playstation, Xbox, Bluray Player into an HDTV or similar displays. This product can act as a signal router, you may have a TV in two separate rooms, you can have a TV on in one room and when you want to switch room and keep watching the TV, you just need to switch one TV off and switch the other TV on, and then the signal is routed to the TV in the other room.
NOTE: You can connect up to two displays, but can not be displayed simultaneously unless both TVs are of the same size, then both TV will show the images when connected.