The ST121UTPHDGB HDMI Audio Video Extender over Cat 5 with RS232 & IR extends an HDMI (or DVI) source signal up to 80 meters (260 feet) using a standard Cat 5 or better UTP/STP cable, giving you the freedom to optimize the placement of your display without sacrificing image quality. Compliance with HDMI 1.3 as well as HDCP ensures that even the latest devices will be able to pass a signal with support for full 1080p resolutions & the accompanying digital audio. This HDMI A/V extender also features bi-directional RS232 serial & Infrared (IR) interfaces allowing you to communicate with & control your media source from either end of the connection. Comprised of a transmitter & receiver unit this HDMI, RS232 & IR extender kit is a complete, cost-effective solution for digital signage, trade-show demo stations or video conferencing. Product Features Extends HDMI or DVI video with control signal over a single CAT5/5e/6/6a/7 UTP/STP cable Supports resolutions up to 1080p / 60 Hz / 48 bit 80m (260ft) maximum cat 5 (or better) cable distance Supports bi-directional RS-232 & IR communication HDMI 1.3 & HDCP compliant Audio transmission supports Dolby True HD, DTS-HD MA RS-232 interface supports up to 115200bps full-duplex data rate No software or drivers required