Godrej Grand Master Key Arrangement:
In the above Diagram
The Locks are operated individually by separate keys (K1 = D1, K2=D2, ....).
The Sub Master key (SMK1, SMK2...) operate a small group's of locks.
The group of locks are operated by master key (M1, M2) and Grand Master key open all locks in the system.
Example :
Master key can be made floor wise & Grand master key can be used for the whole building.
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for grand master key control just make a call or send an inquery .
