http://www.mt-viki.net/index.php?s=/Admin/product/productDetail/id/404/product_id/163/homeSub/7.html This 4x1 HDMI multiviewer switch is hot sale in MT-VIKI, resolves the problem of multi HDMI signal picture show on one monitor via hardware. One projector display multi HDMI signal simultaneously. Support four mode to meet diffrent showing demand. HDMI multiviewer is helpful for saving money and easier controllor. And when the full screen mode, you can think that is a HDMI switch with different function. Features of HDMI multiviewer: Control method: push button, IR and USB keyboard and mouse Resolution up to 1080p Picture controller: full-screen, lift and right, multiscreen and picture in picture Up to display 4 HDMI signal Specification: HDMI switching method: key-press, IR remote Resolution support: 480i@60Hz, 576i@50Hz, 480p@60Hz, 576p@50Hz, 720p@50/60Hz, 1080i@50/60Hz, 1080P@24/25/30/50/60Hz, Picture controlled: Full-screen, mullti-screen, and picture out picture operation Temp.: 0-60? Operation humidity: 5-95% RH Power: DC12v Switching time: High-speed