‹ OM-5.1.4 OM-5.1.6 › OM-5.1.5 If additional security measures to those mentioned in OM-5.1.3 and OM-5.1.4 such as security cameras, motion detectors or intruder alarms are installed, the requirement for steel external doors or protection by steel rolling shutters is waived. ‹ OM-5.1.4 OM-5.1.6 ›