The GefenToolBox 4K ultra HD ELR extender for HDMI with POL uses Gefen’s implementation of the HDBaseT technology to extend HDMI up to 495ft (150m) using one CAT-5e cable. Resolutions up to 4K ultra HD with 7.1-channel of HBR (High Bit Rate) lossless digital audio are supported. This product provides RS-232 and 2-way IR extension between the sender and the receiver units, allowing the transfer of IR commands and RS-232 communications between two remote locations. RS-232 and Bi-Directional IR can be used to control A/V sources placed near the Sender unit and to send automation commands to the display or any other device placed near the Receiver unit. Gefen POL (Power Over Line) technology powers the Receiver unit using the same cable that extends the HDMI signal from the Sender unit. This feature eliminates the need for an external power supply for the Receiver unit and simplifies installation.