A PoE extender, or repeater, extends the maximum distance for both data and power signals in a Power over Ethernet (PoE) network beyond the standard 100 meters (328 feet) by regenerating and forwarding the signal. It receives PoE power and data from a switch or injector and transmits it to a powered device (PD) like an IP camera or access point, requiring no external power source itself. These devices offer flexibility for installing network equipment in hard-to-reach locations, such as large buildings or outdoor settings.