Through a single CAT5e/CAT6 cable, this HDMI Extender can transmit high-definition video/audio signal and IR control signal up to 70 meters away, and 4K@30Hz resolution up to 40 meters, which means zero-delay, uncompressed transmission between transmitter and receiver. This HDMI extender has loop output (cascade), supporting 4K@30Hz resolution. It supports EDID copy function (you can choose local or remote EDID mode) PCM7.1, Dolby True HD, DTS HD audio formats, so this device can be widely used in multimedia conference rooms, online education and large screen display applications. The hdmi output on the transmitter unit provides a so-called (loop out) option, with which you can connect the signal source directly to the display by connecting an HDMI cable, so you can also place a display device at the beginning of the long distance and thus provide two displays at the same time. Features: - HDMI 1.4, HDCP 1.4 and DVI 1.0 compatible - Maximum video resolution up to 4k2k@30Hz YUV 4:4:4 - The maximum transmission distance via a single CAT6/5E cable is as follows: CAT6: 70m with 1080p ; 40 with 4K30 resolution CAT5E: 60m with 1080p, 35m with 4K30 resolution - EDID copy function support for receiver or loop output display - Cascade connection allowed on additional HDMI loop out port - One-way POC function support (transmitter to receiver) - One-way IR signal transmission - Compact design for easy and flexible installation