How to ensure permanent access to a door via a timer or switch?
The suffix eE denotes permanently energizable electric door strikes. In order to prevent the typical snapping noise that accompanies door strikes, they are permanently energized with direct current. If the intercom system with audible snapping noise is to be combined with noiseless permanent unlocking, the changeover device Model 7410-10 can be used. 8 V eE, 12 V eE and 24 V eE versions are also available.