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PoE for Network-Attached Devices

Posted on November 13, 2019October 20, 2020 by Bob Mesnik

Door Access Control, IP Camera Systems, IP PA Systems use PoE

Power over Ethernet (PoE) is the easiest way to provide power to many network-attached devices such as IP cameras, door access control systems, and IP paging and Intercom systems.

The network cable transfers both data and power to the device, making installation very simple. The network cable includes up to eight wires. The data uses one set of wires, while the power uses another set of wires in the network cable.

This article describes how access control systems, IP Camera Systems, and IP paging systems utilize power over Ethernet (PoE)

Network-Attached Devices Ilustration — Network-Attached Devices Illustration

How Power Over Ethernet Works

Posted on May 17, 2016March 21, 2020 by Bob Mesnik

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.