sleutelplan
Dutch
- sluitplan
- sleutelplan
- hoofdsleutelsysteem
English
- master key system
External links
References
- ↑ Master keying refers to a mechanical locking system used throughout a building whereby one key can access multiple locks. This system, also known as a master key system (in reference to the master key which accesses all locks), is used to provide or limit access to different locked areas within a building or complex.