Pros: Same as previous review

Cons: Same as previous review: none

Other Thoughts: I've learned that there is a limit to the system: a maximum of 66 doors can be controlled. That's still pretty great. Also, the 1.30 firmware added support for wireless locks (one brand in particular), which makes it possible to control up to eight locks with one controller. You connect the wireless lock hub to the Axis controller.

Pros: I've deployed a few dozen of these now, and they have been 100% reliable. They're also very easy to set up and manage via the very well done AJAX drag-and-drop web interface. Like all Axis products, the TCP stack is also comprehensive and feature-rich, supporting SNMP, NTP, and IPv6.

Each controller can control two doors, but the system expands to (afaik) an unlimited number of doors by joining controllers together in a shared distributed database. This lets you distribute controllers as easily across the planet as across an building or campus. As long as the controllers have a shared TCP network (e.g., via VPN) and can communicate at Layer 3, they can form a single administrative group.

The system is compatible with all common door readers, strikes, switches and sensors. You tell the system what hardware you have for a given door set, and the unit itself generates a color-coded wiring diagram! This makes installation drop dead simple.

Because the database is distributed and shared, you can configure access rules for all doors in a managed set from any single door controller. Manually operating a door, however, such as to unlock it on demand remotely, requires access to the specific door controller for the door pair. This is as it should be from a security standpoint.

The basic idea behind the system is that you locate a controller near (within 100' or so) the doors you want to control, which minimizes the length of distance-sensitive reader and door-strike cable, and let's you control 12V strikes and mag locks directly with the reader. For 24V hardware you can supply that power through a controller-integrated relay. Or you can always add your own external relay.

With the door controller installed near the door, you connect the controller via copper PoE Ethernet to a PoE switch or injector located up to 300' away. I use inexpensive $20 PoE injectors from Trendnet. The unit will acquire its own address via DHCP from your LAN, and the supplied AXIS finder widget (the same one they use for their cameras) locates the unit and reports its IP address to you. This streamlines what is often the most tedious part on initial controller installation.

The shared distributed database supports up to 400 users, and you can expand that by going to a centralized server-based database.

Cons: No cons. I've been using these for two years and haven't found anything I'd change. Axis has released only a handful of firmware updates, all bug fixes, indicating the quality of their initial development.