Domains are used to group doors and locations in, for example, groups of buildings and/or areas, and have no connection to persons in the system.
In a domain there can be up to 50 doors. Systems with more than 50 doors must therefore consist of multiple domains. A domain must contain at least one B60 domain controller.
When a B60 is installed, it must be added in an existing domain or in a new domain created for that B60.
A domain can contain a maximum of one C10 and up to 49 C11.
For redundancy, more than one B60 can exist in one domain.
Zones cannot contain doors from different domains.