This is an HDMI to DVB-T Converter, perfect solution to distribute HDMI signal to DVB-T1 standard digitalcable television via coaxial cables. Output canbe set to any channel number and injects directly to your CATV splitter to distribute to all your TVs, coexisting with all your current regular channels. Multiple this HDMI to DVB-T Converter can be installed to distribute as many channels as you need. It s for monitor systems, outdoor large screen display, shopping mall advertisement, media education fields etc.