Tag: power over Ethernet

How Power Over Ethernet Works

PoE makes installation very easy

By Bob Mesnik

This article has been updated on 10/4/2018 to reflect the new PoE injectors available.

Many network-attached devices, such as IP cameras, VoIP phones, WiFi radios, and IP door readers use power over Ethernet (PoE).  The single network cable transfers both data and power to the device making installation very simple.  The data uses one set of wires, while the power uses another set of wires in the network cable.

PoE Injector Diagram
PoE Injector Diagram
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