The ST121SHD30 is HDMI over CAT5e/CAT6 video extender kit lets extend HDMI audio/video and an IR remote control signal by up to 100 feet (30 Meters) over dual Cat5e or Cat6 cable. For added versatility this HDMI extender kit is powered via the HDMI bus and does not require any additional power adapter. With support for high-definition resolutions of up to 1920x1080/1080p and the accompanying digital audio, this cost-effective HD extender can easily be installed using new or existing Ethernet infrastructure wiring. Plus, because the extender kit does not require a power adapter, can easily extend an HDMI signal in areas where access to power outlets is limited. The HDMI over Cat5e/Cat6 video extender kit includes both the local transmitter and remote receiver units, perfect for point-to-point digital signage applications that require high quality HDMI video. The Extender also works to extend Infrared IR signals from remote controls, perfect for controlling video source from video destination.