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KD – Keyed Different
The key opens only one padlock.
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KA – Keyed Alike
Each padlock has its own key. All keys are the same and open all padlocks within in a group.
A master key can be used to open multiple locks that are keyed differently. This allows supervisors to easily remove a lock in the event of an emergency. In order for employees to retain exclusive control, master keys should be kept in a secure location that is accessible only to management.
MK – Master Keyed
GMK – Grand master keyed
A Grand Master Key sits at the highest level of access and opens all padlocks, including:
- groups of Keyed Different Padlocks
- groups of Keyed Different Padlocks with a Master Key
- groups of Keyed Alike padlocks
- groups of Keyed Alike padlocks with a Master Key
- mixed Groups of Keyed Alike, Keyed Different and Master Keyed