"A cheap, two-camera system that trades image quality for a large screen and privacy."
No-WiFi means the cameras link directly to the monitor via a 2.4GHz radio signal. This makes it immune to internet-based hacking but also means you cannot check in from your phone when away from home.
This is for the budget-conscious buyer who needs to monitor two rooms and values a private, non-internet connection above all else. If you're willing to accept standard-definition video for a low price, this package delivers the basic function.
Anyone who wants a sharp, clear image to see fine details like a baby's breathing pattern should look elsewhere. If you need the ability to check in remotely via a smartphone app, you need a WiFi-based model.