OM-5.1.2
Other external entrances must have steel doors or be protected by steel rolling shutters. Preferably, all other external entrances should have the following security measures:
(a) Magic eye;
(b) Locking device (key externally and handle internally);
(c) Door closing mechanism;
(d) Contact sensor with alarm for prolonged opening time; and
(e) Combination access control system (e.g. access card and key slot or swipe card and password).
January 2014