So far it works perfectly. There is an application through the Play Store for Android (I haven't tested it on the Apple App Store, so I don't know) where you can connect via Wi-Fi or mobile data and view/manage the cameras live. It has many security settings such as notifications on your mobile, motion photos, video recording, and much more. When you connect the system via the Ethernet cable to the router, you don't need to make any further IP settings, etc. as it says in the network settings, just a little patience for it to configure itself. If you ever happen to open it and it shows a black screen on the cameras, simply unplug it, wait 1-2 minutes, and plug it back in.

A cheap Chinese product. Very low-resolution cameras. The only thing I liked was the long length of the cables. However, I think it is expensive for its quality. It could at least have a wireless mouse!!! I'm coming back. Two out of the four cameras have already burned out!!!!

The set includes 4 cameras with cables at 10-12 meters, 1 recorder, 1 mouse, and the power supply cable that provides power to the recorder and cameras. For the money, it's good. I have installed it without a hard drive to have a picture, not to make recordings.