Unrestricted public access despite locked door. For premises such as doctor's and lawyer's offices, etc. during visiting hours, the automatic control system operates door strike release.

The visitor rings the door bell and activates the automatic system in the door strike control device if the system is engaged. This releases the door for 1-10 seconds after the preset delay of 1-20 seconds. The visitor can enter during this time. By closing the door locking happens immediately.
When the system is switched off, the door strike can be used in standard mode.

The automatic door strike control can be used with all fail locked (1) effeff electric strikes.