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).