PoE is quickly becoming a viable alternative for access control system designs. Network switch manufacturers are producing power sourcing equipment designed specifically for the security industry and access control manufacturers offer PoE capable powered devices for their access control systems.
Well designed PoE based access control systems will:
1.) Utilize power sourcing equipment that avoids power sharing across the various PoE ports of the device.
2.) Comply with the new IEEE P802.3at standard including CAT 5 or better cable and Hi PoE power availability.
3.) Incorporate a cascading technique that employs smaller switches in a distributed architecture.
4.) Consist of powered devices that have been designed and tested to meet the PoE Plus standard.
5.) Incorporate power back-up systems that keep the access control functioning during a power failure.
6.) Have built-in protection features that help your security system stay secure.
The long awaited panacea for access control systems may very well be a reality soon, thanks to the new, soon to be ratified, IEEE P802.3at Power Over Ethernet specification. Be careful when looking through the marketing hype and identify those access control system and PoE device manufacturers that understand and conform to the developing industry standards. Remember that just because a technology can be demonstrated on the show floor at an industry convention does not necessarily mean that it is mature enough to be practical.