defender wired security system
Are Defender security cameras any good? Who makes Defender security?

Network video recorder (NVR) is a specialized computer system that includes a software program that records video in a digital format to a disk drive, USB flash drive, SD memory card or other mass storage device.

The security camera system came super fast it was all complete the instructions are easy to read and to install was a breeze I would recommend this to anybody 
Defender 4K is a budget 4K smart home security system that offers pin-sharp UHD imaging and dedicated network video storage at a bargain