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is a very practical and stable switch that easy to install. can beused in the major projects, meeting and other places. candisplay 4-HD digital video signal on the same screen, and has a variety ofvideo seqmentation, seamless switching 4 HD input sianal synchronously. This -compatible 4x1 Quad Multi-viewer is a high-performance switch with four-channel HD screen segmentation and seamless switching output. The control methods of the switch is flexible, it can be switched via button and lR control. -compatible output resolution up to 1080P/60Hz and 4K/30Hz, and there are 4 average screens in multi-viewer mode when you first use the product.