Abstract: A vertical door locking system includes a door lock with a deadbolt that moves horizontally, a striker with an upward facing strike opening that vertically receives the deadbolt and a lock controller. The striker includes an electrically operated catch to engage and release the deadbolt. The door lock and striker are mounted opposite each other, one to the vertical door and the other to an adjacent fixed mounting point. The lock controller electrically operates the striker to release the deadbolt and allow it to move vertically out of engagement with the striker for primary access to a secure area and the door lock allows the deadbolt to be retracted horizontally away from the striker for secondary access. A remotely located control system optionally controls the lock controllers of multiple doors and a central office control system is optionally connected to multiple remotely located control systems.

Abstract: An electromagnetic door lock system, allowing emergency exiting of a building, including an armature mount allowing considerable outward movement of the door with respect to the door frame on which the electromagnet is mounted, whereby outward movement of the door initiates a time delay door release, and gives an increased reassurance that the door will open in an emergency, and allows for improved tamper resistance and reduced false alarms, as the distance the door opens out of the door frame in response to actuation of a panic bar from within is greater than that of conventional systems. A tamper resistant door position sensor includes redundant magnetic reed switches for sensing the position of the door and can include an additional reed switch for detecting when an external magnet is placed near the sensor in an attempt to tamper with the system.

Abstract: A monitoring device for narrow stile, metal frame doors having a mounting plate securable to the door jamb adjacent the strike slot. A switch is mounted on a bracket extending from the face plate and the switch is connectable to an existing alarm system. A trigger normally engages the switch actuator pin. When the closure or door is closed and the dead bolt engaged in the strike slot, the trigger will disengage the pin allowing the alarm system to be armed.