What happens when the access control system is in power outage?
If you want access control in the power outage can also work properly, you can install the backup power supply. An ordinary backup power supply, in the blackout conditions can work 3 to 5 hours. Of course, because the district is now the phenomenon of power failure is not common, so specifically for access control spare power supply situation is not much.
The host computer of the access control system can set the access control to power off or shut down the door. But set to a power outage state, the access control in the power failure will not be able to shut down.
Starting from the professional requirements of security, access control system should be in a state after the blackout, in order to facilitate personnel to escape and evacuate.
