A device such as a panic bar that locks only from the outside is permitted on exit discharge doors.
Fire exit door locking systems.
Emergency exit door locks have two main functions.
Door locks for emergency exits.
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If automated doors need to provide complex functions in escape and rescue routes a system solution from a door control unit offers an electronic locking element such as for example emergency exit locks or emergency exit electric strikes and a panic lock also called anti panic locks.
For instance a latch or some other fastening device is a requirement for doors with a simple releasing device.
This includes the access control lock or fire exit hardware power transfer door position switch or any other component mounted on the door or frame.
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Selecting the proper level of protection.
Exit route doors must be free of any device or alarm that could restrict emergency use of the.
Prevent unauthorized entry into or exit from a building and allow fast exit from the building.
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The delayed egress locking system typically consists of an exit push bar an auxiliary locking device an audible alarm and a special electronic control package.
International and local building codes as well as fire safety laws require them.
Nfpa emergency exit door requirements for locks doors are laid out so that they can be opened from the outside when the building is occupied.
In recognition of this problem many building codes have been modified to allow the use of delayed egress locking systems on emergency exit doors.
According to this norm a complete system including emergency exit switch locking element and control unit have to be tested together and meet the sil2 safety standard.