Power over Ethernet is based on the IEEE 802.3af standard. It provides for suppling both data and power to the camera using a single Ethernet cable up to 330 feet long. PoE is the preferred way for installing outdoor cameras as using WiFi outdoors can be problematic. NetCamPro cameras are video devices that demand a lot from a WiFi system. While it may be possible to connect an outdoor camera to an indoor access point for some installations, it may not be possible for others. Electromagnetic WiFi signals are degraded when going through a number of solid materials, in particular firewall partitions, duct work, plumbing, steel enforced structures, metal siding, or a steel roof.
Outdoor IP cameras will work the most reliably when they are receiving power and data over the same cable. In most jurisdictions a special license is not required to install Ethernet wiring making it a good DIY project.
At 330ft (100m), Power over Ethernet has the same maximum length as Ethernet cable without PoE. For runs past the maximum length, Ethernet switches can be used to bridge the connection and regenerate the signal avoiding attenuation and signal loss. For installations where the signal has to travel even further, a Point to Point Wireless Bridge can be used in between the camera and the Internet gateway.