How we make your class rooms safe
The problem
In some situations the immediate locking of class rooms in the interior zone can be life saving.
The solution
A special knob cylinder, which replaces the existing locking cylinder: from inside it is operated with a turning knob and from outside with a key. The specific feature is the slipper clutch of the knob cylinder, which inhibits the blocking from inside and thus allows access with the authorized key.
How it works
| Normal state Door accessible from outside and inside | In case of killing spree The door is locked for access from outside by locking it from inside. A key is need to open the door from outside. |
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| In case of panic The room can be left at any time via the inside knob. | When pupils play a joke If the door is blocked from inside in jest, it can still be opened from outside with the key. |
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