Power-over-Ethernet uses your LAN to send power via the network cable to whatever device you have connected at the other end, saving you the hassle of plugging the device in to both the network and to power. PoE lets you centralise your power supplies.
The 802.3AF Power-over-Ethernet regulator module mounts on the Freetronics Ethernet Shield or EtherTen to allow it to accept power at a nominal 48V from commercial PoE injectors and switches.
A very useful wide range switchmode regulator with a 5V or 7V output and a wide range input of up to 28V!
The PR28V is rated for up to 1A output and can be used to power your own circuit design.