Using a multiplexor to display 4 Security Cameras on One Monitor

A customer recently contacted CCTV Camera Pros with the following questions related to displaying multiple security camera feeds on one monitor without using a recorder. Below is the chat transcript:

Customer Support:

Hi Frank. How can I help you?

Frank:

We are looking for a video monitor that takes multiple input feeds from a controller so we can see three cameras on the screen at one time. Do you have such monitors or a device that can do this?

Customer Support:

Do your cameras have BNC connections?

Frank:

We are using an r-THREE interface box which has three inputs BNC.

Customer Support:

Please confirm, do you have 3 BNC outputs that you are looking to input to a monitor?

Frank:

yes

Customer Support:

OK, you can use one of these 4 channel video processors / multiplexors: https://www.cctvcamerapros.com/Quad-Video-Processor-p/vm-99015.htm

and connect it to a monitor that has a BNC or RCA monitor such as this one: https://www.cctvcamerapros.com/Composite-Surveillance-Monitor-p/mon-lcd-22w.htm

frank:

on this page:

https://www.cctvcamerapros.com/CCTV-Monitors-s/34.htm

I see a 22inch widescreen can that do the trick?

Customer Support:

Yes, this composite LCD monitor will work just fine: https://www.cctvcamerapros.com/Composite-Surveillance-Monitor-p/mon-lcd-22w.htm

Frank:

No special other equipment.

Customer Support:

you would just need the cables also.

Frank:

SO I am clear. Does this monitor have multiple BNC inputs?

Customer Support:

No, you connect the 3 BNC connections to the Quad processor, then connect the quad processor to the monitor.

Frank:

so the quad processor will display the multiple video? Do you have quad processors?

Customer Support:

Yes, you can see the quad processor here: https://www.cctvcamerapros.com/Quad-Video-Processor-p/vm-99015.htm

Frank:

Thanks for your help. I will order online.