LOCK EVOLUTION
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SPECIAL FUNCTIONS
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R-PLUS
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iX6 KG
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iX10 KG
DIAMANT
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ELS
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OEM
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MASTERKEY
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DOM ELECTRONIC CATALOGUES
The Technical Evolution of the Lock
10. Master Key Systems
A distinction is made today between four types of master key systems:
10.1.
Central Locking System
10.2.
Central Master Key System
10.3.
Master Key System
10.4.
Grand Master Key System
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