HDMI Multiviewer Quad Screen with real time viewing and seamless switching
4x1 HDMI Quad Multiviewer w/ Seamless Switcher w/ HDMI & 164 ft (50M UTP) Output | A-NeuVideo, Inc.
HDMI Multiviewer Switch 4x1,AUBEAMTO Quad Seamless Switcher 4 in 1 Out with IR Remote Control, Support 4K Full HD and 5 Display Modes for Security Camera, Gaming Consoles - Newegg.com
Amazon.com: 4K HDMI Quad Multi-viewer 4x1, Yinker 4 in 1 Out HDMI Quad Switcher for 4K@60Hz, Supports 3.5mm Audio & 90 Degree Rotation & 8 Display Modes & IR Remote & RS232 :
Amazon.com: Optimal Shop 4X1 HDMI Multi-viewer HDMI Quad Screen Real Time Multiviewer with HDMI Seamless Switcher Function Full 1080P and 3D : Electronics