If you need a balance between image quality and storage space and have a limited budget, a 5MP camera is a practical option.

4K is generally considered better than 5MP in terms of video or image quality, but factors including color accuracy, dynamic range, contrast, and overall image processing are also important.

Better Scalability: PoE cameras offer better scalability compared to traditional power-wired cameras. They are quicker to install and easier to scale up as needed. Adding additional security cameras is as simple as adding extra network connections, without the need for complex wiring.

What Is a PoE NVR? NVR represents for network video recorder which provides you with centralized video controls to easily view, manage, and store your surveillance footage in one convenient location. A PoE NVR is a security video recorder with built-in PoE switch designed to use with PoE-based IP cameras.

Direct runs from an NVR's POE port to a camera can go up to 300 feet without any issues.

Yes, please take 2 easy steps as below. Step 1,use an ethernet cable connecte to PoE NVR, then plug the other end to the PoE switch. Step 2,use another ethenet cable connect to the PoE switch, and plug the other end to the router.