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OM-5.1.4

Other external entrances should have steel doors or be protected by steel rolling shutters. Preferably, all other external entrances should have the following security measures:

•  Magic eye.
•  Locking device (key externally and handle internally).
•  Door closing mechanism.
•  Contact sensor with alarm for prolonged opening time.
•  Combination access control system (e.g. access card and key slot or swipe card and password).