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 into both the network and to power and having to run two cables. PoE lets you centralize your power supplies.
The BA-424POE-M is a PoE switch that provides 24 ports of Power over Ethernet and can be managed based on web. Unlike most 24 port PoE switches, the BA-424POE-M gives the installer a port to connect your router/DVR so that you do not waste a PoE enabled port for this. This network switch includes a power supply that accepts 100-240VAC 50/60Hz input. This POE injector works with any network PoE camera on the market that uses 12V DC. This device complies with the IEEE 802.3af standard and works with all types of PoE devices.