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The GefenPRO 4 x 4 Matrix for HDMI with 4 ELR-POL outputs and bi-directional IR routes up to four high-definition sources at resolutions up to 1080p Full HD with Deep Color and multi-channel digital audio to any of four HDTV displays, using FST to speed up the HDCP authentication process. Each of the included ELR-POL receivers units are used to extend HDMI to four locations, using Gefen ELR (Extra Long Range) and POL (Power Over Line) technologies. The GefenPRO 4 x 4 Matrix for HDMI supports 3DTV pass-through and eight channel digital audio formats such as Dolby TrueHD and DTS-HD Master Audio. 3D content can be displayed when connecting a 3DTV and 3D source. Each source is accessible at all times from any display location. Bi-directional IR allows each connected source to be controlled from any of the viewing locations, as well as each high-definition display being controlled from the source location. The IR all out port on the matrix broadcasts IR commands from any of the viewing locations to all sources. The IR all in port on the matrix broadcasts IR commands from an automation control device by the matrix to all remote displays.