Door opening limiting stop for preventing forced entry has blocking element for limiting opening movement of door with incorporated audible warning device

摘要

The stop has a blocking lever (22) displaced relative to the inside surface of the door (15) and a locking device for locking the blocking lever in a working position in which it restricts the opening movement of the door, operated from either side of the latter. The blocking lever has one or more stops (23) cooperating with the door edge, for limiting its opening movement to a maximum of 12 degrees and a cooperating electronic warning device with a control, a battery, a siren and switch elements.