New enabling technologies such as Power over Ethernet (PoE) have brought IP Video Surveillance to areas where it might not have otherwise been practical or economically feasible. Sometimes, traditional power wiring for AC power is not available or easy to install.
Power over Ethernet (PoE) has emerged to allow devices such as networked cameras to receive power over the same cabling that carries the network data. PoE simplifies the installation and operation, keeping the cabling secure while not interfering with the network operation.