HDMI Multiviewer Switch 4x1, Quad Seamless Switcher 4 in 1 Out with IR Remote Control, Support 4K Full HD and 5 Display Modes for Security Camera, Gaming Consoles

I wanted the option to view my cameras and watch TV while I do hair with sound and this did what I needed it to do

Tenía otra espectativa sobre su funcionamiento, pero se puede usar para algunas cosas

You get what you pay for, and I would not recommend for anyone using heavy video or for productivity purposes. But, if you're wanting a general display where people aren't getting close to screen, it might work for you.When unit in fullscreen mode, it appears to bypass the box, creating a clean 1080 signal; however, when using the various quad display modes, all screens are blurry and low pixel rate. I suspect the box is down-sampling the inputs, then combining into a quad 1080 picture. Then, that 1080 version is then up-sampled to 4k to allow the button to switch between 1080/4k. Display can see that signal is changing between 1080 & 4k, but visually it is the same. (I.E. - it appears like the inputs are scaled to 960x540, then combined to create 1920x1080 and then upsampled to create a 4k picture.)

Outstanding

I bought this input switcher with the intent of using it for gaming from two consoles onto a projector/ big tv. I wanted one that could push 4k. I will be honest. it is NOT good enough for gaming. But I don't think there is a product out there that can actually do it, unfortunately. That doesn't take away points in my opinion, because I'm sure it was never meant for that. I still like the product because its excellent for watching multiple sports games on the big screen with friends over, make my home feel like a sports bar. but the resolution is blurrier than a true 4k (more like 1080p even in 4k mode) and there is some noticeable lag when gaming on it. so I do not use it for work on my 4k work monitor or for gaming.but as a 4 input multiviewer/switch, it is AWESOME for the price.

IF you have multiple (up to 4) HDMI sources that you want to feed to one display device, THIS is the product you want. I have multiple security camera systems and have had to have multiple displays to see everything. I have been researching HDMI switchers and settled on this one because it look simple to operate, it was INEXPENSIVE (compared to many other units on the market) so I gave it a try.Shipping was quick, and within 5 minutes, I was up and running. A couple of points - (1) The remote requires two AAA batteries which were not supplied. Not a deal breaker for me, (2) The USB power cord is quite short for the unit. Again, not a deal breaker for me. I simply added my own extension power cord and was in business.I had been suspicious of these devices as I wondered if the picture quality would be degraded. Turned out to be an unfounded suspicion! Picture quality is EXCELLENT, the options are nice (single display, multi-display, moving from one to the next).I am SO PLEASED I settled on this unit. The price is truly outstanding, it was easy to install and works intuitively.

Audio only outputs 1 hdmi input at a time. It does not do simultaneous audio output. Otherwise a great device, simple and functional. Runs via 5V usbc. Also if an input is unused, it displays vertical bars of colors, not just a black screen, God forbid you only use 3 inputs, it’s very annoying to have on screen.

Did not work at all. HDMI is plug and pray b/c of HDCP encryption issues but don't have a product that doesn't work as advertised. If it requires specific equipment, say so. Returned it.