ZeeVee HDB2640-DT HDbridge Encoder Modulator for DirecTV Receivers with its high 45 dBmv RF output, you can send your content to an unlimited number of displays over nearly any distance. You can change sources on any display simply by changing the channel on the display - virtually eliminating the need for a traditional AV matrix switcher. 4 Channel HD MPEG2 Digital Video Encoder-QAM Modulator; 4 x Component Video-Analog; Digital Audio Inputs; 4 Digital HD Channel on 4 QAM RF Frequencies; Closed Captioning Support, LAN Config-Management; 45 dBmV RF Output; Up to 1080i-p Resolution, including qty 4 Satellite DIN.