4-in-1-out multiviewer design, displays four HDMI signal sources simultaneously on one monitor with split-screen mode.; Supports 4K@30Hz and 1080P@60Hz resolution, delivers clear and stable high-definition picture quality.; Seamless switching function achieves smooth signal toggle without black screen or flicker.; Multiple split screen layout optional, flexible to arrange display ratio and viewing mode.; Wide compatibility with surveillance cameras, set-top boxes, game consoles and other HDMI devices for office, monitoring and conference use.