Powering access control using Power over Ethernet is convenient and increasingly common.
However, access requires more power than cameras, and the problems of not having enough are significant especially if unsecured doors, unresponsive doors, or dead readers are the result. Using PoE for access requires knowledge of Life Safety Codes.
In this tutorial, we teach:
Why PoE for Access Is Useful
PoE versus PoE+ Use For Controllers
Why 4 Doors Is Typically Max For PoE Controllers
How To Calculate PoE Power Load For Access
How To Check Available Field Power
The Code Impact Of Using PoE
Cost Savings From PoE Powered Access
4 Common Problem Areas When Using PoE Powered Access
At the report's end, take the 7 question quiz on PoE Powered Access Control to test your knowledge.
Note: This guide was updated in 2018 and again for 2021.
Where PoE For Access Is Useful
PoE is useful in retrofit access control to bring power to the door, instead of installing high voltage electrical for the system first, an expense that can often cost hundreds of dollars per door.
Without PoE, power at the door involves extending or running new circuits from breakers to openings in new conduit with new outlets, power supplies, enclosures, and junction boxes, while PoE routes power through the same cable that connects door devices to an ethernet network.