Business installation

I was asked to install these cameras in a business setting. SEO Woburn. They have three small rooms to cover. (It’s to monitor closed hours) What’s the minimum we should install?

You should be able to cover virtually all of a small room with one camera (fixed V2 model) if you can place it high up in a corner of the room. The only are not covered would be a small area directly below the camera mounting point. I don’t favor the Pan Cam for this application.

Thanks. I’m assuming we put them in a corner to maximize coverage.