diy security camera system
What is the best DIY home security camera system? What is the best home security system without monthly fee?

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.

Discover the best Surveillance Security Cameras in Best Sellers. Wyze Cam Pan 1080p Pan/Tilt/Zoom Wi-Fi Indoor Smart Home Camera with Night Vision, 
DIY wireless home security monitoring. Lorex wireless security systems make it easier to install your cameras higher, or further away without having to run cables