HDMI Multiviewer Switch 4K 4X1, BolAAzuL Quad Multi-Viewer 4 in 1 out HDMI Switcher Split Screen Seamless Switching with IR Remote, 5 Viewing Modes, 1080P, for PS4 DVD Camera PC to TV Monitor

Great item

For it's advertised task this is a good, if basic, device.Accepts up to 4 HDMI inputs and puts them on one HDMI display.It would probably be ideal for putting multiple security feeds on one monitor.I couldn't get it to give me more than 30Hz, which for the above job would be absolutely fine.The remote is good, possibly the best bundled basic remote I've used, in terms of build quality and it simply working - although it does need a pretty direct line of sight with the front of this device to work.It's switch between devices feature works well, actually better than using my TVs remote to do the same job.So why only 4 stars?It offers very limited display options, none of which I found useful enough to compensate for the drop in refresh rate. I wanted it to provide PIP on my TV, something that my TV was advertised as having but didn't. As such I wanted an option to have a main display with a PIP box (or more than one) so that I could see what was happening on one or more other HDMI devices, and switch between them. This it doesn't do, other devices of this type do, but this one, no.The closest it could manage was having 2 devices display side by side, at 30Hz, meaning neither device (e.g. a TV box and a computer) was really usable - rather than having the TV box full screen with an insert PIP box showing me what the PC was up to, and allowing me to switch between them instantaneously.So....it doesn't do what I wanted, but as a basic device to show 4 HDMI devices video on one screen, it does a pretty good job at that.

Excellent product ..does what it says.

I purchased this product to use with two laptops, hoping to display both screens simultaneously on a shared larger monitor. Unfortunately, this device does not fulfill that purpose. When connected, the screen quality degrades significantly, making it nearly impossible to read or work effectively. I tried adjusting the resolution and other settings, but nothing improved the clarity. For anyone considering this device for similar needs, I would advise against it—it’s simply not worth the money that you play.. i am returning this produict

Have me all 4 cameras in a multi camera shoot with no issues. Easy to use and set up. Perfect

The standout feature of this device is its ability to seamlessly switch between four input sources, providing a quad-screen display on a single monitor or TV. The 1080P resolution ensures clear and crisp visuals, making it ideal for a variety of devices such as PS4, DVD players, cameras, and PCs.The setup process was straightforward, and I appreciated the ease with which I could switch between sources using the remote control. The quad-screen feature is particularly useful for multitasking or comparing content from different devices simultaneously.The build quality is satisfactory, and the device feels sturdy. The compact design is a plus, as it doesn't take up much space in my entertainment center.However, the reason for withholding a fifth star is the lack of advanced features. While it performs admirably in basic functions, some competing products offer additional customization options and features. A more extensive set of controls or presets would enhance the overall user experience.In summary, the BolAAzuL HDMI Multiviewer is a reliable and efficient tool to expand your viewing experience. With clear visuals and easy switching capabilities, it's a valuable addition to any entertainment setup, albeit with room for improvement in terms of advanced features.

Hi there.I can't seem to get this to output, the unit is seeing all the inputs but won't show anything on the screen. I have also lost the user guide so I'm not sure if I'm doing something wrong. Can you help please?

On split screen side by side especially it stretches the input vertically making them unviewableIf you want the 4 screens split equally in each corner though; that works fine. But for 2 inputs don’t waste your money.