What cylinder lock functions are required? classroom cylinder locks prevent children locking themselves in

Clutch function prevents control of the door from the inside: We have developed cylinder locks where the key, when entered, disengages the thumbturn by use of a clutch mechanism. This will allow the door to be unlocked even if the thumbturn is being held in the locked position from the inside.

The security and safety implications make the use of the clutch cylinder lock ideal for situations such as schools, secure institutions or any other area where a non keyholder may take advantage of controlling the door by holding the thumbturn in the locked position to prevent the door being unlocked.

Classroom function allows only the key holder to lock the door: We have further developed the clutch cylinder so that the turn can only unlock the door.

Features are identical to the clutch cylinder with the addition that the turn can only unlock the door. These are typically used in schools where for example only a keyholder can lock a classroom door (rather than a student by turning the thumbturn from the inside).

Over 70% of modern masterkey systems provided for schools, colleges and universities are provided in this format.

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