In modern networking, power injectors, also known as Power over Ethernet (PoE) injectors, have become essential tools. They enable the transmission of both electrical power and data over a single Ethernet cable, allowing devices like IP cameras, wireless access points, and VoIP phones to operate without separate power sources. This technology simplifies installations and offers greater flexibility in device placement .

Functionality and Operation
A Power Injectors connects to a non-PoE network switch and adds power to the Ethernet cable, which then delivers both data and electricity to the connected device. This process involves converting AC power to DC and combining it with the data signal without interference. The injector ensures that only compatible devices receive power, adhering to standards like IEEE 802.3af, 802.3at, or 802.3bt