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.
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.