A PoE (Power over Ethernet) camera is a type of security camera that receives both power and data through a single Ethernet cable. PoE technology eliminates the need for separate power cables and outlets by powering the camera directly through the same network cable used for data transmission.

A PoE camera typically uses between 3 and 15 watts. Basic PoE security cameras may consume around 3 to 7 watts, while PoE cameras with higher resolution, infrared or color night vision, or pan-and-tilt features can use up to 15 watts or more. For precise power consumption, refer to the camera's specifications.

First, you'll need a compatible Ethernet cable (Cat5e or higher). Next, find a PoE injector or a PoE-enabled network switch to provide both power and data through the Ethernet cable. Finally, you’ll need a router or network switch to manage network connectivity.

No, you don’t necessarily need an NVR to use a PoE camera. Although an NVR is often used to manage, store, and view footage from multiple PoE cameras, you can also use a PoE camera independently or connect it directly to a computer or smartphone with compatible software.